PIPING SYSTEM COMPONENT DESCRIPTIONS AND FUNCTIONS 1. AIR SUPPLY INLET LINE - Provides connecƟon of trailer-mounted air supply unit or alternaƟve air source. Includes 3” buƩerfly valve which, when closed, prevents air from alternaƟve source from flowing upstream.
1. MAIN AIR SUPPLY LINE CHECK VALVE - Permits one-direcƟon flow from power source to tank and prevents air-borne product from backing up to power source when pressure in tank is greater than in supply lines.
1. MAIN AIR SUPPLY LINE - Transfers air from tractor air supply line to aeraƟon and discharge lines.
1. PRESSURE RELIEF VALVE - Prevents pressure inside vessel from exceeding maximum operaƟng pressure.
1. BLOW DOWN VALVE - Opens/closes blowdown line to atmosphere.
1. BLOW DOWN LINE - Exhausts tank air to atmosphere. Used to pressurize tank when top air kit is installed.
1. PRESSURE CONTROL VALVE - Controls product line pressure. Used to pressurize product line to discharge product from line to silo/ receiver vessel.
1. AERATION CONTROL VALVE - Controls main air supply line pressure. Used to control air to aerators.
1. PRODUCT DISCHARGE VALVE - Regulates the flow of aerated material from the hopper to the product tee. 2. PRODUCT DISCHARGE LINE - Facilitates pneumaƟc discharge of mate-rials from hoppers. 3. AERATION - Induces air into hopper to aerate product and make it flow-able. See figure X for idenƟficaƟon of aeraƟon units. Refer to AeraƟon System OperaƟon on page XX for detailed descripƟon. 4. PRODUCT DISCHARGE TEE - Facilitates transfer of materials from hopper to product line. 5. REAR DISCHARGE LINE - Extension of product line to rear of trailer. Used to connect vessel to silo/receiving vessel. 6. TANK PRESSURE GAUGES - Register air pressure in tank and product line. 7. TOP AIR LINE - Provides a means to pressurize vessel to force material down and out of hoppers. 8. AERATION MANIFOLD - Directs supply air to individual aeraƟon lines. 9. INDIVIDUAL HOPPER AERATION CONTROL VALVE - Controls air flow to individual hoppers.
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