{"id":3953,"date":"2026-09-14T23:10:04","date_gmt":"2026-09-14T15:10:04","guid":{"rendered":"https:\/\/www.pandamechvehicle.com\/?page_id=3953"},"modified":"2026-09-20T08:23:09","modified_gmt":"2026-09-20T00:23:09","slug":"cement-tanker-pneumatic-unloading-system","status":"publish","type":"page","link":"https:\/\/www.pandamechvehicle.com\/fr\/cement-tanker-engineering\/cement-tanker-pneumatic-unloading-system\/","title":{"rendered":"Syst\u00e8me de d\u00e9chargement pneumatique d\u2019une semi-remorque citerne \u00e0 ciment : conception et d\u00e9pannage"},"content":{"rendered":"\n<style>\n\n.pm-page{\n  --pm-font:Inter,\"Helvetica Neue\",Arial,sans-serif;\n  --pm-dark:#102536;--pm-ink:#15202B;--pm-text:#5E6B78;--pm-muted:#6B7780;\n  --pm-line:#DFE5EA;--pm-line-strong:#B9C6CF;--pm-light:#F5F7F9;--pm-white:#FFFFFF;\n  --pm-blue:#1670B5;--pm-blue-hover:#0F609D;--pm-hero-lead:#D3DDE3;\n  --pm-eyebrow:#8DC4EA;--pm-support:#C4D0D7;--pm-success:#24745D;--pm-accent:#E67B27;\n  --pm-radius:6px;--pm-container:1400px;\n  --pm-ease:cubic-bezier(.22,1,.36,1);--pm-motion-fast:180ms;--pm-motion-base:560ms;--pm-motion-image:760ms;\n}\n\n\/* 02. 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body.page-id-3953 .pd-en-a11y-20260920-a04e3 .pm-unloading-reference__box > .pm-text-link { color: #b9e2ff; }\n<\/style>\n<main class=\"pm-page pm-page-pneumatic-unloading-system pnu-page pd-en-a11y-20260920-a04e3\">\n<section class=\"pm-hero\">\n<div class=\"pm-container\">\n<nav aria-label=\"Breadcrumb\" class=\"pm-breadcrumb\">\n<a href=\"https:\/\/www.pandamechvehicle.com\/\">Home<\/a><span>\u203a<\/span>\n<a href=\"https:\/\/www.pandamechvehicle.com\/products\/\">Cement Tanker<\/a><span>\u203a<\/span>\n<span>Pneumatic Unloading System<\/span>\n<\/nav>\n<div class=\"pm-hero__inner pm-unloading-hero__inner\">\n<div class=\"pm-hero__content\"><p class=\"pm-eyebrow pnu-hero-reveal pnu-delay-0\">Panda Mech Cement Tanker Engineering<\/p><h1 class=\"pnu-hero-reveal pnu-delay-70 pm-h1 pm-hero__title\">Cement Tanker Pneumatic Unloading System: Design &amp; Troubleshooting<\/h1><p class=\"pm-lead pm-hero__lead pnu-hero-reveal pnu-delay-140\">Panda Mech designs the compressor, air lines, aeration zones, discharge pipe and valves to work as one pneumatic unloading system. Aeration zones are the parts of the tank where compressed air enters the cement bed. We use your cargo, discharge distance, silo height and target <a href=\"https:\/\/www.pandamechvehicle.com\/cement-tanker-engineering\/cement-tanker-unloading-time\/\">unloading time<\/a> to choose the final setup.<\/p><\/div>\n<div class=\"pm-unloading-hero__actions pnu-hero-reveal pnu-delay-190\"><div class=\"pm-actions\">\n<a class=\"pm-btn pm-btn--hero-primary\" href=\"https:\/\/www.pandamechvehicle.com\/contact-us\/\">Send Your Unloading Conditions<\/a>\n<a class=\"pm-btn pm-btn--hero-secondary\" href=\"https:\/\/www.pandamechvehicle.com\/products\/50-ton-cement-tanker-trailer\/\">See Our 50 Ton Cement Tanker<\/a>\n<\/div><\/div>\n<figure class=\"pnu-hero-media-wrap pm-hero__media\" data-pnu-image=\"hero\">\n<div class=\"pm-unloading-hero__frame pnu-image-reveal\"><img fetchpriority=\"high\" decoding=\"async\" alt=\"Panda Mech cement tanker with compressor and pneumatic discharge hardware\" class=\"pm-hero__image\" fetchpriority=\"high\" height=\"500\" src=\"https:\/\/www.pandamechvehicle.com\/wp-content\/uploads\/2026\/09\/cement-tanker-95390427.webp\" width=\"750\"\/><\/div>\n<figcaption class=\"pm-small pm-unloading-caption\">Panda Mech pneumatic cement tanker showing the compressor and discharge-side hardware.<\/figcaption>\n<\/figure>\n<div class=\"pm-unloading-hero__answer\"><div class=\"pm-unloading-quick-answer pnu-hero-reveal pnu-delay-240\"><strong>Quick answer:<\/strong> for Panda Mech cement tankers, our current cement-tanker family unloading-performance reference is <strong>&gt;1.5 t\/min<\/strong>. Actual site performance can change with cargo condition, airflow, hose length, silo height, pipe bends, air leaks and silo backpressure. Backpressure means pressure pushing back from the receiving silo. This is why we match the whole system instead of choosing the compressor alone.<\/div><p class=\"pm-small pm-unloading-evidence-note\">Panda Mech reference: <a class=\"pm-text-link\" href=\"https:\/\/www.pandamechvehicle.com\/cement-tanker-engineering\/cement-tanker-pneumatic-unloading-system\/\">see our published cement-tanker unloading procedure and operating reference<\/a>. Final performance still depends on the approved model and real unloading site.<\/p><\/div>\n<div class=\"pm-hero__support pm-unloading-hero__proof pnu-hero-reveal pnu-delay-300\">\n<div class=\"pm-unloading-proof\"><strong>&gt;1.5 t\/min<\/strong><span>Panda Mech cement-tanker family performance reference; actual site rate depends on operating conditions.<\/span><\/div>\n<div class=\"pm-unloading-proof\"><strong>One matched system<\/strong><span>Compressor, aeration, pipework, valves and receiving silo work together.<\/span><\/div>\n<div class=\"pm-unloading-proof\"><strong>Your site data matters<\/strong><span>We check discharge distance, silo height and receiving conditions before we finalize the setup.<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section><nav aria-label=\"On this page\" class=\"pm-toc\">\n<div class=\"pm-container\">\n<strong class=\"pm-unloading-toc__title\">On This Page<\/strong>\n<div class=\"pm-unloading-toc__links\">\n<a href=\"#how-it-works\">How unloading works<\/a>\n<a href=\"#site-matching\">How we match the system<\/a>\n<a href=\"#tanker-vs-silo\">Tanker vs silo<\/a>\n<a href=\"#pre-unloading-checks\">Before-unloading checks<\/a>\n<a href=\"#airflow-vs-pressure\">Airflow vs pressure<\/a>\n<a href=\"#troubleshooting\">Slow unloading diagnosis<\/a>\n<a href=\"#rfq\">What to send Panda Mech<\/a>\n<\/div>\n<\/div>\n<\/nav>\n<section class=\"pm-section pm-section--light\">\n<div class=\"pm-container pnu-reveal\" data-pnu-reveal=\"group\">\n<h2 class=\"pm-h2\">A Bigger Compressor Does Not Automatically Mean Faster Unloading<\/h2>\n<p class=\"pm-lead\">A good system must build steady airflow, loosen the cement evenly and move it through the discharge line. It must also work with the receiving silo. A restriction anywhere in this path can slow the whole unloading process.<\/p>\n<div class=\"pm-grid pm-grid--3 pm-unloading-principles\">\n<article class=\"pm-unloading-principle is-good\"><strong>Match the whole system<\/strong><p>The compressor, air chambers, aeration fabric, discharge pipe, hose and silo connection must work together.<\/p><\/article>\n<article class=\"pm-unloading-principle is-good\"><strong>Check the real unloading site<\/strong><p>Longer hose runs, higher silos, more bends and poor silo venting all make unloading harder.<\/p><\/article>\n<article class=\"pm-unloading-principle is-warning\"><strong>More pressure is not always the answer<\/strong><p>If pressure is high but cement flow is weak, something may be restricting the system. The cement may also be getting too little or uneven air. Increasing compressor speed may not fix the real problem.<\/p><\/article>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"pm-section pm-section--dark\" id=\"how-it-works\">\n<div class=\"pm-container\">\n<p class=\"pm-eyebrow\">How the System Works<\/p>\n<h2 class=\"pm-h2\">How Air and Cement Move Through the System<\/h2>\n<p class=\"pm-lead\">The unloading system has two connected paths. The air path builds pressure and puts air into the cement bed. The material path carries the loosened cement from the tank to the silo. Both paths must work correctly.<\/p>\n<div aria-describedby=\"pnu-flow-help\" aria-label=\"Air path and material path\" class=\"pm-unloading-flow\" role=\"region\" tabindex=\"0\">\n<div class=\"pm-unloading-flow__row pm-unloading-flow--air\"><div class=\"pm-unloading-flow__label\">AIR PATH<\/div><div class=\"pm-unloading-flow__cell\"><strong>Power Source<\/strong><span>Engine \/ power take-off (PTO) \/ configured drive<\/span><\/div><div class=\"pm-unloading-flow__cell\"><strong>Compressor<\/strong><span>Creates airflow<\/span><\/div><div class=\"pm-unloading-flow__cell\"><strong>Air Manifold<\/strong><span>Distributes compressed air<\/span><\/div><div class=\"pm-unloading-flow__cell\"><strong>Air Chambers<\/strong><span>Sends air to separate tank zones<\/span><\/div><div class=\"pm-unloading-flow__cell\"><strong>Aeration Layer<\/strong><span>Loosens powder with air<\/span><\/div><div class=\"pm-unloading-flow__cell\"><strong>Tank Space<\/strong><span>Pressure builds in the tank<\/span><\/div><\/div>\n<div class=\"pm-unloading-flow__row pm-unloading-flow--material\"><div class=\"pm-unloading-flow__label\">MATERIAL PATH<\/div><div class=\"pm-unloading-flow__cell\"><strong>Powder Bed<\/strong><span>Cement stored in tank<\/span><\/div><div class=\"pm-unloading-flow__cell\"><strong>Fluidized Zone<\/strong><span>Air helps the powder move<\/span><\/div><div class=\"pm-unloading-flow__cell\"><strong>Tank Outlet<\/strong><span>Powder moves toward the outlet<\/span><\/div><div class=\"pm-unloading-flow__cell\"><strong>Product Valve<\/strong><span>Controls discharge<\/span><\/div><div class=\"pm-unloading-flow__cell\"><strong>Pipe \/ Hose<\/strong><span>Carries cement to the silo<\/span><\/div><div class=\"pm-unloading-flow__cell\"><strong>Receiving Silo<\/strong><span>Receives cement and lets displaced air leave<\/span><\/div><\/div>\n<\/div><p class=\"pm-small\" id=\"pnu-flow-help\">On narrow screens, this system path reflows into fewer columns so each step stays readable.<\/p>\n<\/div>\n<\/section>\n<section class=\"pm-section\">\n<div class=\"pm-container pnu-reveal\" data-pnu-reveal=\"group\">\n<h2 class=\"pm-h2\">What Happens Inside a Cement Tanker During Pneumatic Unloading?<\/h2>\n<p class=\"pm-lead\">Compressed air enters the tank through the aeration zones under the cement. The air loosens the powder so it can move toward the outlet. Engineers call this fluidization. Tank pressure then helps push the cement through the discharge line to the silo.<\/p>\n<figure class=\"pm-unloading-diagram pnu-image-reveal\" data-pnu-image=\"true\"><img decoding=\"async\" alt=\"Infographic showing how compressed air fluidizes cement inside a tanker and pushes it through the discharge line into the receiving silo.\" loading=\"lazy\" src=\"https:\/\/www.pandamechvehicle.com\/wp-content\/uploads\/2026\/09\/pneumatic-cement-tanker-diagram-1.webp\"\/><\/figure>\n<div class=\"pm-unloading-source\"><strong>Simple system illustration:<\/strong> the exact number of air chambers, valves and pipes depends on the tanker design and the approved model setup.<\/div>\n<\/div>\n<\/section>\n<section class=\"pm-section pm-section--light\" id=\"site-matching\">\n<div class=\"pm-container\">\n<h2 class=\"pm-h2\">How Panda Mech Matches the Pneumatic System to Your Unloading Site<\/h2>\n<p class=\"pm-lead\">We do not choose the pneumatic setup from tanker size alone. We first check how far the cement must travel and how high it must rise. We also check how the tractor drives the compressor and how the receiving silo handles air.<\/p>\n<div aria-label=\"Pneumatic configuration decision table\" class=\"pm-table-wrap pm-unloading-decision\" role=\"region\" tabindex=\"0\">\n<table class=\"pm-table\">\n<thead><tr><th>Your Site Condition<\/th><th>What We Check<\/th><th>Why It Matters<\/th><th>What to Send Us<\/th><\/tr><\/thead>\n<tbody>\n<tr><td data-label=\"Your Site Condition\">High receiving silo<\/td><td data-label=\"What We Check\">Silo height, airflow, pipe resistance and compressor matching.<\/td><td data-label=\"Why It Matters\">The higher the cement must travel, the harder the system has to work.<\/td><td data-label=\"What to Send Us\">Height from the tanker outlet to the silo inlet.<\/td><\/tr>\n<tr><td data-label=\"Your Site Condition\">Long horizontal discharge line<\/td><td data-label=\"What We Check\">Pipe or hose diameter, total length, bends, boost air and compressor load.<\/td><td data-label=\"Why It Matters\">Longer lines create more resistance and can slow the cement flow.<\/td><td data-label=\"What to Send Us\">Total horizontal distance and hose\/pipe diameter.<\/td><\/tr>\n<tr><td data-label=\"Your Site Condition\">Multiple bends or restricted routing<\/td><td data-label=\"What We Check\">Pipe route, number of bends and connection layout.<\/td><td data-label=\"Why It Matters\">Every tight bend or narrow point adds resistance and can increase the risk of blockage.<\/td><td data-label=\"What to Send Us\">Number of bends and connection layout.<\/td><\/tr>\n<tr><td data-label=\"Your Site Condition\">Limited tractor PTO or incompatible drive<\/td><td data-label=\"What We Check\">Available tractor drive and other air-source options.<\/td><td data-label=\"Why It Matters\">The compressor drive must match your tractor. One drive setup does not fit every fleet.<\/td><td data-label=\"What to Send Us\">Tractor model, power take-off (PTO) details and available power.<\/td><\/tr>\n<tr><td data-label=\"Your Site Condition\">High silo backpressure<\/td><td data-label=\"What We Check\">Silo venting, filter condition and inlet layout.<\/td><td data-label=\"Why It Matters\">A blocked filter or poor venting can slow unloading even when the tanker is working correctly.<\/td><td data-label=\"What to Send Us\">Silo filter \/ venting details where available.<\/td><\/tr>\n<tr><td data-label=\"Your Site Condition\">Moist or difficult-flowing cargo<\/td><td data-label=\"What We Check\">Cargo condition, aeration setup and operating procedure.<\/td><td data-label=\"Why It Matters\">Moisture can make powder harder to fluidize. This can slow unloading and leave more material in the tank.<\/td><td data-label=\"What to Send Us\">Cargo name, bulk density (weight per unit volume) and whether moisture is a concern.<\/td><\/tr>\n<tr><td data-label=\"Your Site Condition\">Fleet needs repeatable turnaround<\/td><td data-label=\"What We Check\">Common compressor, valves, hose connections, operating steps and service parts.<\/td><td data-label=\"Why It Matters\">For a fleet, repeatable unloading and easy maintenance usually matter more than one peak performance number.<\/td><td data-label=\"What to Send Us\">Trailer quantity, target unloading time and any fleet-standard requirements.<\/td><\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"pm-section\">\n<div class=\"pm-container\">\n<h2 class=\"pm-h2\">What We Check in Each Part of the Pneumatic Unloading System<\/h2>\n<div aria-label=\"Pneumatic unloading system components\" class=\"pm-table-wrap\" role=\"region\" tabindex=\"0\">\n<table class=\"pm-table\">\n<thead><tr><th>Component<\/th><th>What It Does<\/th><th>What Can Go Wrong<\/th><th>What We Check<\/th><\/tr><\/thead>\n<tbody><tr><td data-label=\"Component\">Air Compressor \/ Blower<\/td><td data-label=\"What It Does\">Builds airflow and tank pressure so the powder can fluidize and move.<\/td><td data-label=\"What Can Go Wrong\">Slow pressure build, weak airflow, overheating or long unloading time.<\/td><td data-label=\"What We Check\">Compressor model, airflow, drive method, running condition and service status.<\/td><\/tr><tr><td data-label=\"Component\">Air Manifold \/ Distribution<\/td><td data-label=\"What It Does\">Sends compressed air to the tank zones that need it.<\/td><td data-label=\"What Can Go Wrong\">Leaks or poor distribution can leave some tank areas short of air.<\/td><td data-label=\"What We Check\">Pipe route, fittings, leaks, valve positions and air balance.<\/td><\/tr><tr><td data-label=\"Component\">Air Chambers &amp; Aeration System<\/td><td data-label=\"What It Does\">Spreads air under the cement so the powder loosens and moves toward the outlet.<\/td><td data-label=\"What Can Go Wrong\">Poor aeration can leave residue or create high pressure with weak material flow.<\/td><td data-label=\"What We Check\">Air-chamber sequence, aeration fabric condition, blockage and airflow balance.<\/td><\/tr><tr><td data-label=\"Component\">Tank Outlet<\/td><td data-label=\"What It Does\">Guides fluidized cement toward the product valve.<\/td><td data-label=\"What Can Go Wrong\">Material buildup or poor flow into the outlet can restrict discharge.<\/td><td data-label=\"What We Check\">Outlet condition, geometry and visible blockage.<\/td><\/tr><tr><td data-label=\"Component\">Product Valve<\/td><td data-label=\"What It Does\">Controls when cement enters the discharge line.<\/td><td data-label=\"What Can Go Wrong\">A partly open, leaking or obstructed valve can limit flow.<\/td><td data-label=\"What We Check\">Opening position, seal condition, movement and obstruction.<\/td><\/tr><tr><td data-label=\"Component\">Secondary \/ Boost Air<\/td><td data-label=\"What It Does\">Adds air when the approved procedure calls for line clearing or flow support.<\/td><td data-label=\"What Can Go Wrong\">Wrong timing can make flow unstable or fail to clear the line.<\/td><td data-label=\"What We Check\">Valve timing and the approved operating sequence for the tanker.<\/td><\/tr><tr><td data-label=\"Component\">Discharge Pipe &amp; Hose<\/td><td data-label=\"What It Does\">Carries cement from the tanker to the receiving silo.<\/td><td data-label=\"What Can Go Wrong\">Long runs, small passages, tight bends or damaged hose increase resistance.<\/td><td data-label=\"What We Check\">Diameter, total length, bends, hose condition and silo height.<\/td><\/tr><tr><td data-label=\"Component\">Pressure &amp; Safety Devices<\/td><td data-label=\"What It Does\">The pressure gauge shows tank pressure. The vent valve releases pressure in a controlled way. The safety relief valve protects against overpressure.<\/td><td data-label=\"What Can Go Wrong\">Bad readings, trapped pressure or an incorrectly serviced relief device can create unsafe conditions.<\/td><td data-label=\"What We Check\">Gauge condition, vent operation and the approved safety-relief setting. The safety relief valve is not a normal operating control.<\/td><\/tr><\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"pm-section pm-section--light\" id=\"tanker-vs-silo\">\n<div class=\"pm-container pnu-reveal\" data-pnu-reveal=\"group\">\n<h2 class=\"pm-h2\">Slow Unloading Can Come From the Tanker or the Silo<\/h2>\n<p class=\"pm-lead\">When unloading is slow, the problem may be on the tanker or at the receiving silo. We check both sides before changing compressor speed, pressure or hardware.<\/p>\n<div class=\"pm-unloading-side-grid\">\n<article class=\"pm-unloading-side pm-unloading-side--tanker\"><h3 class=\"pm-h3\">On the Tanker<\/h3><ul><li>Compressor or blower output and drive<\/li><li>Air lines and air-chamber balance<\/li><li>Aeration fabric and internal air zones<\/li><li>Discharge valve and boost-air sequence<\/li><li>Pipe or hose diameter, condition and bends<\/li><\/ul><\/article>\n<article class=\"pm-unloading-side pm-unloading-side--site\"><h3 class=\"pm-h3\">At the Receiving Silo<\/h3><ul><li>Silo inlet height<\/li><li>Horizontal discharge distance<\/li><li>Silo inlet restriction<\/li><li>Filter condition and how much air it can handle<\/li><li>Silo venting and backpressure<\/li><\/ul><\/article>\n<\/div>\n<div class=\"pm-unloading-note\"><strong>What this means:<\/strong><p>A bigger compressor cannot fix a blocked silo filter, poor venting or a badly restricted discharge route. Check the receiving silo before we finalize the pneumatic setup.<\/p><\/div>\n<\/div>\n<\/section><section class=\"pm-section\" id=\"dust-control\">\n<div class=\"pm-container pnu-reveal\" data-pnu-reveal=\"group\">\n<h2 class=\"pm-h2\">Does Pneumatic Unloading Reduce Cement Dust?<\/h2>\n<p class=\"pm-lead\"><strong>Yes, a closed pneumatic discharge line helps reduce open cement handling and uncontrolled dust release.<\/strong> But the receiving silo must still handle the incoming conveying air correctly. A restricted filter or poor venting can raise backpressure, slow unloading and create dust problems around the silo side.<\/p>\n<div aria-label=\"Closed pneumatic unloading and silo air path\" class=\"pm-unloading-dust-flow\">\n<div><strong>Tanker<\/strong><span>Cement and conveying air leave the tanker.<\/span><\/div>\n<div><strong>Closed discharge line<\/strong><span>Moves material without open transfer between the tanker and silo.<\/span><\/div>\n<div><strong>Silo inlet<\/strong><span>Cement enters the receiving silo.<\/span><\/div>\n<div><strong>Filter + venting<\/strong><span>The receiving air needs a controlled way to leave.<\/span><\/div>\n<\/div>\n<div class=\"pm-unloading-note--warning\"><strong>What this means:<\/strong> do not evaluate dust control only from the tanker side. Silo filter condition and venting capacity also affect both unloading performance and site cleanliness.<\/div>\n<\/div>\n<\/section><section class=\"pm-section pm-section--light\" id=\"pre-unloading-checks\">\n<div class=\"pm-container\">\n<h2 class=\"pm-h2\">What Should You Check Before Pneumatic Unloading?<\/h2>\n<p class=\"pm-lead\">A short check before unloading can prevent many avoidable problems. The aim is to confirm that the material path, air path, receiving silo and safety devices are ready before pressure builds.<\/p>\n<div class=\"pm-unloading-checklist\">\n<div><strong>Discharge hose and coupling<\/strong><span>Look for damage, loose connections or a poor seal that could leak air or cement.<\/span><\/div>\n<div><strong>Product valve<\/strong><span>Confirm the valve moves correctly and is in the approved starting position.<\/span><\/div>\n<div><strong>Air lines and fittings<\/strong><span>Visible leaks reduce the airflow available for fluidization and conveying.<\/span><\/div>\n<div><strong>Pressure gauge<\/strong><span>Make sure the gauge is in serviceable condition so the operator can trust the reading.<\/span><\/div>\n<div><strong>Compressor \/ blower<\/strong><span>Confirm normal service condition before starting the unloading cycle.<\/span><\/div>\n<div><strong>Silo filter<\/strong><span>A restricted filter can increase receiving-silo backpressure.<\/span><\/div>\n<div><strong>Silo venting<\/strong><span>The conveying air entering the silo needs a safe and effective way to leave.<\/span><\/div>\n<div><strong>Safety relief device<\/strong><span>Keep it in the approved service condition. Do not use it as a normal operating control.<\/span><\/div>\n<\/div>\n<div class=\"pm-unloading-note--warning\"><strong>Do not change pressure or safety-valve settings simply because unloading is slow.<\/strong> Find the restriction or operating problem first, then follow the approved model instructions.<\/div>\n<\/div>\n<\/section>\n<section class=\"pm-section\">\n<div class=\"pm-container\">\n<h2 class=\"pm-h2\">How Pneumatic Unloading Moves From Connection to Safe Depressurization<\/h2>\n<p class=\"pm-lead\">The exact valve order and pressure values must follow the approved instructions for your Panda Mech model. The steps below show the general flow. They do not replace the operating manual.<\/p>\n<div class=\"pm-unloading-sequence\">\n<div class=\"pm-unloading-sequence__step\"><strong>Connect<\/strong><span>Connect the discharge hose to the approved silo connection and make sure it is sealed.<\/span><\/div>\n<div class=\"pm-unloading-sequence__step\"><strong>Prepare Valves<\/strong><span>Set the air, vent, secondary-air and product valves to the approved starting positions.<\/span><\/div>\n<div class=\"pm-unloading-sequence__step\"><strong>Start Air Source<\/strong><span>Start the air source and bring it to the required running condition.<\/span><\/div>\n<div class=\"pm-unloading-sequence__step\"><strong>Build Pressure<\/strong><span>Let airflow and tank pressure stabilize as required by the model procedure.<\/span><\/div>\n<div class=\"pm-unloading-sequence__step\"><strong>Open Discharge<\/strong><span>Open the product flow only when the required pressure and valve conditions are met.<\/span><\/div>\n<div class=\"pm-unloading-sequence__step\"><strong>Clean Zones<\/strong><span>Use the approved front and rear air sequence to clear the remaining cement.<\/span><\/div>\n<div class=\"pm-unloading-sequence__step\"><strong>Depressurize<\/strong><span>Stop the air source and release all tank pressure. Disconnect the hose only after the tank is confirmed safe.<\/span><\/div>\n<\/div>\n<div class=\"pm-unloading-note--warning\"><strong>Safety note:<\/strong> working pressure, test pressure and the safety-relief setting are different values. Do not swap them or copy a pressure value from another tanker model.<\/div>\n<\/div>\n<\/section>\n<section class=\"pm-section\" id=\"airflow-vs-pressure\">\n<div class=\"pm-container\">\n<div class=\"pm-unloading-split\">\n<div>\n<h2 class=\"pm-h2\">Airflow vs Pressure: What Actually Moves the Cement?<\/h2>\n<p class=\"pm-lead\"><strong>Airflow and pressure do different jobs.<\/strong> Airflow supplies the air that loosens the cement and carries it through the discharge line. Pressure shows how much resistance the system is working against.<\/p>\n<p class=\"pm-unloading-bodycopy\">If pressure rises quickly but cement flow stays low, adding more pressure may not solve the problem. Check aeration, valve opening, hose or pipe restriction, bends and receiving-silo backpressure first.<\/p>\n<\/div>\n<div aria-label=\"Airflow and pressure diagnostic signals\" class=\"pm-unloading-signals\">\n<div><strong>Stable pressure + good cement flow<\/strong><span>The system is moving material normally under the current site conditions.<\/span><\/div>\n<div><strong>High pressure + weak flow<\/strong><span>The system may be meeting resistance. Check the material path, aeration and receiving silo.<\/span><\/div>\n<div><strong>Low pressure + weak flow<\/strong><span>The air supply may be low or air may be escaping. Check compressor output, leaks and valve positions.<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section><section class=\"pm-section pm-section--light\">\n<div class=\"pm-container\">\n<h2 class=\"pm-h2\">A High Pressure Reading Does Not Always Mean Fast Unloading<\/h2>\n<p class=\"pm-lead\">Do not judge unloading by the pressure gauge alone. Read pressure together with cement flow, valve position, aeration stage, pipe resistance and the condition of the receiving silo.<\/p>\n<div class=\"pm-unloading-pressure\">\n<div class=\"pm-unloading-pressure__bar\"><div><strong>Pressure Build<\/strong><span>Air enters the sealed tank and pressure builds.<\/span><\/div><div><strong>Stable Main Discharge<\/strong><span>Most cement is moving to the silo.<\/span><\/div><div><strong>Near Empty<\/strong><span>Less cement remains, so pressure and flow can change.<\/span><\/div><div><strong>Cleanout<\/strong><span>The last tank zones are cleared.<\/span><\/div><\/div>\n<p class=\"pm-unloading-pressure__note\">If pressure rises fast but cement flow stays weak, something may be restricting the system. Poor fluidization, a blocked line or silo backpressure can raise pressure without moving much cement.<\/p>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"pm-section\" id=\"troubleshooting\">\n<div class=\"pm-container\">\n<h2 class=\"pm-h2\">Why Is a Cement Tanker Unloading Slowly?<\/h2>\n<p class=\"pm-lead\">Check the symptom before increasing compressor speed or pressure. The pattern often shows whether the problem is in the air system, the cement flow, the discharge line or the receiving silo.<\/p>\n<div aria-label=\"Slow unloading diagnostic matrix\" class=\"pm-table-wrap pm-unloading-diagnosis\" role=\"region\" tabindex=\"0\">\n<table class=\"pm-table pm-table--diagnostic\">\n<thead><tr><th>Symptom<\/th><th>Likely Cause Area<\/th><th>Check First<\/th><th>What It Means<\/th><\/tr><\/thead>\n<tbody>\n<tr><td data-label=\"Symptom\">Pressure will not build<\/td><td data-label=\"Likely Cause Area\">Air leakage \/ low compressor output<\/td><td data-label=\"Check First\">Manholes, vent\/relief devices, air lines, compressor output<\/td><td data-label=\"What It Means\">Air is escaping too quickly, or the compressor is not supplying enough air to build the needed pressure.<\/td><\/tr>\n<tr><td data-label=\"Symptom\">Pressure rises too quickly but flow is weak<\/td><td data-label=\"Likely Cause Area\">Restriction \/ poor fluidization \/ silo backpressure<\/td><td data-label=\"Check First\">Product valve, pipe, hose, aeration zones, silo filter and venting<\/td><td data-label=\"What It Means\">Pressure is building, but the cement is not moving at the same rate.<\/td><\/tr>\n<tr><td data-label=\"Symptom\">Main discharge starts well then becomes slow<\/td><td data-label=\"Likely Cause Area\">Aeration \/ material convergence<\/td><td data-label=\"Check First\">Front\/rear chamber sequence and residual zones<\/td><td data-label=\"What It Means\">The remaining cement may not be moving to the outlet well.<\/td><\/tr>\n<tr><td data-label=\"Symptom\">One end retains material<\/td><td data-label=\"Likely Cause Area\">Zone-specific aeration problem<\/td><td data-label=\"Check First\">Air-chamber valves, fabric and internal air distribution<\/td><td data-label=\"What It Means\">One part of the tank is not clearing properly.<\/td><\/tr>\n<tr><td data-label=\"Symptom\">Pressure fluctuates and material pulses<\/td><td data-label=\"Likely Cause Area\">Air \/ material instability<\/td><td data-label=\"Check First\">Valve position, boost air, hose route and silo condition<\/td><td data-label=\"What It Means\">Airflow or cement flow is unstable.<\/td><\/tr>\n<tr><td data-label=\"Symptom\">High residual material<\/td><td data-label=\"Likely Cause Area\">Geometry \/ aeration \/ sequence \/ cargo condition<\/td><td data-label=\"Check First\">Dead zones, fabric, cargo moisture and front\/rear cleanout<\/td><td data-label=\"What It Means\">Main unloading can finish while some cement still remains in the tank.<\/td><\/tr>\n<tr><td data-label=\"Symptom\">Compressor runs hot<\/td><td data-label=\"Likely Cause Area\">Air-source operating problem<\/td><td data-label=\"Check First\">Speed, filter, lubrication and prolonged restriction<\/td><td data-label=\"What It Means\">The compressor may be running too hard or working against too much resistance.<\/td><\/tr>\n<tr><td data-label=\"Symptom\">Cement flow slows or stops after a long hose run or several bends<\/td><td data-label=\"Likely Cause Area\">Pipeline resistance \/ partial blockage<\/td><td data-label=\"Check First\">Hose route, pipe diameter, bends, product valve, boost air and silo condition<\/td><td data-label=\"What It Means\">The material path may be more restrictive than the current airflow can handle efficiently.<\/td><\/tr><\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/section><section class=\"pm-section pm-section--light\" id=\"material-condition\">\n<div class=\"pm-container\">\n<h2 class=\"pm-h2\">How Cement Condition Changes Unloading Performance<\/h2>\n<p class=\"pm-lead\">The same tanker can unload differently when the material condition changes. We therefore ask about the cargo as well as the tanker and silo.<\/p>\n<div aria-label=\"Material condition and unloading performance\" class=\"pm-table-wrap\" role=\"region\" tabindex=\"0\">\n<table class=\"pm-table pm-table--material\">\n<thead><tr><th>Material Condition<\/th><th>What Can Happen<\/th><th>What We Check<\/th><\/tr><\/thead>\n<tbody>\n<tr><td data-label=\"Material Condition\">Dry, free-flowing cement<\/td><td data-label=\"What Can Happen\">Usually easier to aerate and move when the pneumatic system and receiving silo are correctly matched.<\/td><td data-label=\"What We Check\">Normal airflow, discharge route and silo conditions.<\/td><\/tr>\n<tr><td data-label=\"Material Condition\">Moist cement<\/td><td data-label=\"What Can Happen\">Powder can become harder to fluidize and may leave more residue.<\/td><td data-label=\"What We Check\">Cargo condition, aeration performance and residue after unloading.<\/td><\/tr>\n<tr><td data-label=\"Material Condition\">Compacted cement<\/td><td data-label=\"What Can Happen\">The powder may need more time to loosen before stable flow develops.<\/td><td data-label=\"What We Check\">Aeration sequence, cargo condition and material movement toward the outlet.<\/td><\/tr>\n<tr><td data-label=\"Material Condition\">Different bulk density<\/td><td data-label=\"What Can Happen\">Payload, required tank volume and flow behavior may change.<\/td><td data-label=\"What We Check\">Actual cargo data. Bulk density means the weight of the powder per unit of volume.<\/td><\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"pm-unloading-source\"><strong>Do not guess a universal moisture or density value.<\/strong> Send Panda Mech your actual material data when available. We use that information as an engineering input rather than treating all cement or powder as identical.<\/div>\n<\/div>\n<\/section>\n<section class=\"pm-section pm-section--light\">\n<div class=\"pm-container\">\n<h2 class=\"pm-h2\">What Our Published Cement Unloading Procedure Shows<\/h2>\n<p class=\"pm-lead\">Our published cement-tanker procedure shows how front and rear air chambers, secondary air and pressure checks are used during unloading.<\/p>\n<div class=\"pm-unloading-reference\">\n<aside class=\"pm-unloading-reference__box\"><strong>Published pressure references<\/strong><p>In that published procedure, Panda Mech uses about <strong>0.15 MPa<\/strong> when clearing the discharge line with secondary air. It uses about <strong>0.20 MPa<\/strong> before opening the main discharge butterfly valve in that specific sequence.<\/p><p>These numbers apply to that published operating procedure. They are not universal <a href=\"https:\/\/www.pandamechvehicle.com\/cement-tanker-engineering\/cement-tanker-working-pressure\/\">working pressure<\/a>, test pressure, maximum allowable working pressure (MAWP) or safety-relief values for every tanker.<\/p><a class=\"pm-text-link\" href=\"https:\/\/www.pandamechvehicle.com\/cement-tanker-engineering\/cement-tanker-pneumatic-unloading-system\/\">Read the Panda Mech unloading procedure \u2192<\/a><\/aside>\n<div>\n<div class=\"pm-unloading-reference__steps\">\n<div class=\"pm-unloading-reference__step\"><strong>1. Connect and seal the discharge line<\/strong><span>Set the front and rear air-chamber, pressure-release, secondary-air and product valves as required by the approved procedure.<\/span><\/div>\n<div class=\"pm-unloading-reference__step\"><strong>2. Start engine \/ compressor smoothly<\/strong><span>Start the configured air source and begin building tank pressure.<\/span><\/div>\n<div class=\"pm-unloading-reference__step\"><strong>3. Clear the discharge line<\/strong><span>The published procedure references secondary-air use around 0.15 MPa.<\/span><\/div>\n<div class=\"pm-unloading-reference__step\"><strong>4. Begin main discharge<\/strong><span>The published procedure references opening the discharge butterfly valve around 0.20 MPa.<\/span><\/div>\n<div class=\"pm-unloading-reference__step\"><strong>5. Clean rear and front zones<\/strong><span>Use the front and rear air chambers in sequence while watching pressure and cement flow.<\/span><\/div>\n<div class=\"pm-unloading-reference__step\"><strong>6. Confirm residue and depressurize<\/strong><span>Stop the air source, fully release tank pressure and disconnect in the approved order.<\/span><\/div>\n<\/div>\n<div class=\"pm-unloading-note--warning\"><strong>Do not copy pressure values from another model:<\/strong> the approved tanker specification and operating instructions control the final pressure and valve logic.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"pm-section\">\n<div class=\"pm-container pnu-reveal\" data-pnu-reveal=\"group\">\n<p class=\"pm-eyebrow\">Panda Mech Manufacturing and QC<\/p>\n<h2 class=\"pm-h2\">How Panda Mech Checks the Unloading System Before Delivery<\/h2>\n<p class=\"pm-lead\">Stable unloading depends on the finished pneumatic system matching the approved specification. During manufacturing and final inspection, we check the air system, piping, valves, tank fabrication and configured air source before handover.<\/p>\n<div class=\"pm-unloading-gallery\" data-pnu-image=\"factory\">\n<div class=\"pm-unloading-gallery__main pnu-image-reveal\"><img loading=\"lazy\" decoding=\"async\" alt=\"Panda Mech cement tanker manufacturing in factory\" height=\"533\" loading=\"lazy\" src=\"https:\/\/www.pandamechvehicle.com\/wp-content\/uploads\/2026\/09\/cement-trailer-factory3-59318690.webp\" width=\"800\"\/><\/div>\n<div class=\"pm-unloading-gallery__side\"><img loading=\"lazy\" decoding=\"async\" alt=\"Panda Mech cement tanker pneumatic parts and compressor components\" height=\"533\" loading=\"lazy\" src=\"https:\/\/www.pandamechvehicle.com\/wp-content\/uploads\/2026\/09\/spare-parts-of-85-tons-cement-tanker-82938254.webp\" width=\"800\"\/><img loading=\"lazy\" decoding=\"async\" alt=\"Panda Mech cement bulker valves pipework and discharge components\" height=\"533\" loading=\"lazy\" src=\"https:\/\/www.pandamechvehicle.com\/wp-content\/uploads\/2026\/09\/cement-bulker-parts-27561525.webp\" width=\"800\"\/><\/div>\n<\/div>\n<div class=\"pm-unloading-qc-proof\">\n<div><strong>200+ QC checks\/items<\/strong><span>Company-level quality-control checks across the manufacturing process.<\/span><\/div>\n<div><strong>Air system<\/strong><span>Checks piping installation, connections and visible air-leak risks.<\/span><\/div>\n<div><strong>Tank &amp; weld inspection<\/strong><span>Checks tank fabrication before final handover.<\/span><\/div>\n<div><strong>Valves &amp; configured air source<\/strong><span>Checks installed valves and compressor function under the approved factory process.<\/span><\/div>\n<div><strong>Final specification review<\/strong><span>Confirms the finished tanker matches the approved configuration before delivery.<\/span><\/div>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"pm-section pm-section--light\" id=\"rfq\">\n<div class=\"pm-container\">\n<h2 class=\"pm-h2\">Send Us These Details Before We Finalize the Pneumatic Setup<\/h2>\n<p class=\"pm-lead\">Send what you know. You do not need every value before contacting Panda Mech. Start with the six items below; our engineering team will tell you what else is needed.<\/p>\n<div class=\"pm-unloading-rfq-groups\"><section class=\"pm-unloading-rfq-group is-required\"><h3 class=\"pm-h3\">First review \u2014 send these first<\/h3><div class=\"pm-unloading-rfq\"><div><strong>Cargo<\/strong><span>Cement or other industrial powder; send bulk density when known.<\/span><\/div><div><strong>Target payload<\/strong><span>Tell us the payload you need. We will confirm the tank volume separately.<\/span><\/div><div><strong>Tractor \/ PTO<\/strong><span>Confirms how the compressor can be driven with your tractor.<\/span><\/div><div><strong>Silo height<\/strong><span>Height from the tanker outlet to the receiving-silo inlet.<\/span><\/div><div><strong>Horizontal distance<\/strong><span>Total hose or pipe distance, including the number of bends.<\/span><\/div><div><strong>Target unloading time<\/strong><span>Used as a target. Final performance depends on the real site conditions.<\/span><\/div><\/div><\/section><section class=\"pm-unloading-rfq-group is-helpful\"><h3 class=\"pm-h3\">Helpful if available<\/h3><div class=\"pm-unloading-rfq\"><div><strong>Destination country<\/strong><span>Helps us review route, road and axle requirements. Local legal limits still need confirmation.<\/span><\/div><div><strong>Project type<\/strong><span>Cement plant, transport fleet, engineering contractor or single-trailer purchase.<\/span><\/div><div><strong>Tank volume if known<\/strong><span>Payload and cubic-meter volume are different inputs; send both if you already know them.<\/span><\/div><div><strong>Quantity<\/strong><span>Helps us plan fleet consistency, spare parts and production.<\/span><\/div><div><strong>Road condition<\/strong><span>Helps us choose running gear, suspension and chassis setup.<\/span><\/div><div><strong>Silo filter \/ venting<\/strong><span>Helps us check whether the receiving silo may create excessive backpressure.<\/span><\/div><div><strong>Axle \/ suspension preference<\/strong><span>We confirm this together with route, payload and local legal requirements.<\/span><\/div><div><strong>Destination port<\/strong><span>Needed to prepare the shipping part of the quotation.<\/span><\/div><\/div><\/section><\/div>\n<div class=\"pm-actions\"><a class=\"pm-btn pm-btn--primary\" href=\"https:\/\/www.pandamechvehicle.com\/contact-us\/\">Send Your Unloading Conditions<\/a><\/div>\n<\/div>\n<\/section>\n<section class=\"pm-section\">\n<div class=\"pm-container\">\n<h2 class=\"pm-h2\">Learn More About Operation, System Design and Cement Tanker Options<\/h2>\n<div class=\"pm-grid pm-grid--2 pm-unloading-related--spaced\">\n<article class=\"pm-card pm-unloading-related__card\"><h3 class=\"pm-h3\">Unloading Procedure<\/h3><p>See Panda Mech&#8217;s published unloading steps and pressure references.<\/p><a class=\"pm-text-link\" href=\"https:\/\/www.pandamechvehicle.com\/cement-tanker-engineering\/cement-tanker-pneumatic-unloading-system\/\">Read unloading procedure<\/a><\/article>\n<article class=\"pm-card pm-unloading-related__card\"><h3 class=\"pm-h3\">How a Cement Tanker Works<\/h3><p>See how the complete cement tanker works, not only the unloading system.<\/p><a class=\"pm-text-link\" href=\"https:\/\/www.pandamechvehicle.com\/cement-tanker-engineering\/how-does-a-cement-tanker-work\/\">Read working principle<\/a><\/article>\n<article class=\"pm-card pm-unloading-related__card\"><h3 class=\"pm-h3\">Pneumatic Trailer Guide<\/h3><p>Learn the basics of pneumatic trailer design, loading and unloading.<\/p><a class=\"pm-text-link\" href=\"https:\/\/www.pandamechvehicle.com\/cement-tanker-engineering\/cement-tanker-pneumatic-unloading-system\/\">Read pneumatic trailer guide<\/a><\/article>\n<article class=\"pm-card pm-unloading-related__card\"><h3 class=\"pm-h3\">Cement Tanker Range<\/h3><p>View Panda Mech cement tanker models and available configurations.<\/p><a class=\"pm-text-link\" href=\"https:\/\/www.pandamechvehicle.com\/products\/\">View cement tankers<\/a><\/article>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"pm-section pm-section--light\">\n<div class=\"pm-container\">\n<h2 class=\"pm-h2\">Common Questions Before You Order a Cement Tanker<\/h2>\n<div class=\"pm-faq\">\n<details><summary>How fast can a Panda Mech cement tanker unload?<\/summary><p>Our current Panda Mech cement-tanker family unloading-performance reference is &gt;1.5 t\/min. Actual rate can change with cargo condition, compressor output, aeration, air leaks, pipe or hose size, discharge distance, silo height, bends and silo backpressure.<\/p><\/details>\n<details><summary>Does a larger compressor always unload cement faster?<\/summary><p>No. The compressor must match the tank, <a href=\"https:\/\/www.pandamechvehicle.com\/cement-tanker-engineering\/cement-tanker-aeration-system\/\">aeration system<\/a>, discharge line, cargo and receiving silo. If the real problem is a narrow hose, poor fluidization or silo backpressure, a bigger compressor will not remove that restriction.<\/p><\/details>\n<details><summary>Why can tank pressure be high while cement flow is slow?<\/summary><p>High pressure can mean the system is meeting resistance. Check the product valve, hose or pipe, aeration zones, bends, silo filter and silo venting before assuming the compressor is too small.<\/p><\/details>\n<details><summary>Why does one end of the tanker retain more cement?<\/summary><p>One tank area may not be getting enough air. A damaged or blocked aeration fabric, the wrong front\/rear air sequence or difficult cargo can also leave more cement in one end.<\/p><\/details>\n<details><summary>What silo information should I send Panda Mech?<\/summary><p>Send the silo inlet height, horizontal discharge distance, hose or pipe diameter, number of bends and connection layout. If you know the silo filter and venting details, send those too.<\/p><\/details>\n<details><summary>Are 0.15 MPa and 0.20 MPa the pressure settings for every Panda Mech tanker?<\/summary><p>No. Those values come from one published Panda Mech operating procedure. The working pressure, test pressure, safety-relief setting and valve sequence must follow the approved specification and instructions for your actual tanker.<\/p><\/details>\n<details><summary>What should I send for a quotation?<\/summary><p>Start with your destination country, project type, cargo, target payload and tank volume. Also send the quantity, road condition, tractor, silo height, discharge distance, target unloading time, axle or suspension preference and destination port. If you know the bulk density or local gross vehicle weight (GVW) and axle limits, send them too. You can still contact us if some details are missing.<\/p><\/details>\n<details><summary>What is the difference between airflow and pressure during unloading?<\/summary><p>Airflow supplies the air that loosens and carries the cement. Pressure shows the resistance the system is working against. High pressure with weak cement flow can point to a restriction, poor aeration or receiving-silo backpressure.<\/p><\/details><details><summary>Does pneumatic unloading eliminate cement dust?<\/summary><p>A closed discharge line helps reduce open handling and uncontrolled dust release, but the receiving silo still needs effective filtration and venting. A restricted silo filter can increase backpressure and cause problems on the silo side.<\/p><\/details><\/div>\n<\/div>\n<\/section>\n<section class=\"pm-section pm-section--dark\">\n<div class=\"pm-container pnu-reveal\" data-pnu-reveal=\"group\">\n<div class=\"pm-cta\">\n<div class=\"pm-unloading-cta__grid\">\n<div>\n<p class=\"pm-eyebrow\">Next Step<\/p>\n<h2 class=\"pm-h2\">Match the Tanker to Your Real Unloading Site<\/h2>\n<p class=\"pm-lead\">We match the compressor drive, aeration layout, discharge pipe and valves to your cargo and receiving silo. This helps reduce the risk of slow unloading, too much residue and a setup that does not fit your site.<\/p>\n<p class=\"pm-small pm-unloading-small-gap\">For the first review, send your cargo, payload, tractor, discharge distance, silo height and target unloading time. We will tell you what other information is needed.<\/p>\n<\/div>\n<div class=\"pm-unloading-cta__box\">\n<strong class=\"pm-unloading-cta__title\">Get a pneumatic setup matched to your site<\/strong>\n<p>Send us your operating conditions and project requirements. We will use them to prepare the right setup for quotation.<\/p>\n<a class=\"pm-btn pm-btn--primary pm-btn--full\" href=\"https:\/\/www.pandamechvehicle.com\/contact-us\/\">Send Your Unloading Conditions<\/a>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<\/main>\n<script>(()=>{\n  const page=document.querySelector('.pm-page-pneumatic-unloading-system');\n  if(!page)return;\n  const items=[...page.querySelectorAll('[data-pnu-reveal],[data-pnu-image]')].filter(el=>!el.closest('.pm-hero'));\n  const show=el=>{el.classList.add('is-visible');el.querySelectorAll('.pnu-image-reveal').forEach(img=>img.classList.add('is-visible'));};\n  if(!('IntersectionObserver' in window)){items.forEach(show);return;}\n  try{\n    const obs=new IntersectionObserver((entries,o)=>{entries.forEach(entry=>{if(!entry.isIntersecting)return;show(entry.target);o.unobserve(entry.target);});},{threshold:.16,rootMargin:'0px 0px -5% 0px'});\n    items.forEach(el=>obs.observe(el));\n    page.classList.add('pnu-motion-ready');\n  }catch(err){\n    page.classList.remove('pnu-motion-ready');\n    items.forEach(show);\n  }\n})();<\/script>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n<!-- codex-english-image-visibility-v1 -->\n<style id=\"codex-english-image-visibility-v1\">\n\/* Reveal is an enhancement; image visibility must not depend on IntersectionObserver. *\/\n.pm-page-pneumatic-unloading-system.image-reveal,\n  .pm-page-pneumatic-unloading-system .image-reveal,\n  .pm-page-pneumatic-unloading-system[data-reveal],\n  .pm-page-pneumatic-unloading-system [data-reveal] {\n  clip-path: inset(0 0 0 0) !important;\n  opacity: 1 !important;\n  transform: none !important;\n}\n<\/style>\n<script id=\"codex-english-image-visibility-v1-script\">\n(function() {\n  var roots = document.querySelectorAll('.pm-page-pneumatic-unloading-system');\n  roots.forEach(function(root) {\n    root.querySelectorAll('.image-reveal,[data-reveal]').forEach(function(item) {\n      item.classList.add('is-visible');\n      item.style.setProperty('clip-path', 'inset(0 0 0 0)', 'important');\n      item.style.setProperty('opacity', '1', 'important');\n      item.style.setProperty('transform', 'none', 'important');\n    });\n  });\n})();\n<\/script>\n<!-- codex-english-reveal-variants-v2 -->\n<style id=\"codex-english-reveal-variants-v2\">\n\/* Reveal effects must never be a dependency for content visibility. *\/\n.pm-page-pneumatic-unloading-system [data-reveal],\n.pm-page-pneumatic-unloading-system [class*=\"reveal\"],\n.pm-page-pneumatic-unloading-system .pm-motion-pending {\n  opacity: 1 !important;\n  transform: none !important;\n  clip-path: none !important;\n}\n<\/style>\n<script id=\"codex-english-reveal-variants-v2-script\">\n(function() {\n  var root = document.querySelector('.pm-page-pneumatic-unloading-system');\n  if (!root) return;\n  var reveal = function() {\n    root.querySelectorAll('[data-reveal],[class*=\"reveal\"],.pm-motion-pending').forEach(function(item) {\n      item.classList.add('is-visible');\n      item.classList.remove('pm-motion-pending');\n      item.style.setProperty('opacity', '1', 'important');\n      item.style.setProperty('transform', 'none', 'important');\n      item.style.setProperty('clip-path', 'none', 'important');\n    });\n  };\n  reveal();\n  document.addEventListener('DOMContentLoaded', reveal, {once:true});\n  window.setTimeout(reveal, 250);\n  window.setTimeout(reveal, 1800);\n})();\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Home\u203a Cement Tanker\u203a Pneumatic Unloading System Panda Mech Cement Tanker Engineering Cement Tanker Pneumatic Unloading System: Design &amp; Troubleshooting Panda Mech designs the compressor, air lines, aeration zones, discharge pipe and valves to work as one pneumatic unloading system. Aeration zones are the parts of the tank where compressed air enters the cement bed. We [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":4012,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"footnotes":""},"class_list":["post-3953","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.pandamechvehicle.com\/fr\/wp-json\/wp\/v2\/pages\/3953","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pandamechvehicle.com\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.pandamechvehicle.com\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.pandamechvehicle.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pandamechvehicle.com\/fr\/wp-json\/wp\/v2\/comments?post=3953"}],"version-history":[{"count":6,"href":"https:\/\/www.pandamechvehicle.com\/fr\/wp-json\/wp\/v2\/pages\/3953\/revisions"}],"predecessor-version":[{"id":4694,"href":"https:\/\/www.pandamechvehicle.com\/fr\/wp-json\/wp\/v2\/pages\/3953\/revisions\/4694"}],"up":[{"embeddable":true,"href":"https:\/\/www.pandamechvehicle.com\/fr\/wp-json\/wp\/v2\/pages\/4012"}],"wp:attachment":[{"href":"https:\/\/www.pandamechvehicle.com\/fr\/wp-json\/wp\/v2\/media?parent=3953"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}