A spring loaded pallet on the pressure side of the vent allows the discharge of vapours to the outlet piping when the tank pressure exceeds the set point and a weight loaded/ spring pallet on the vacuum side of the vent allows the intake of air when the tank vacuum exceeds the set point. The pallets open and close to regulate the tank pressure within permissible limits to avoid damage to the tank as the tank normally breathes due to the thermal changes or product movement. Virtually eliminates the intake of air and the escape of vapours, except during normal tank breathing, thus reducing product loss.
Construction Housing Material: The Model 4200 is a rugged design made to last. Available in Aluminium, Carbon Steel, or 316 SST.
Sizes and Connections: Available in Sizes 2" through 6". CS and SST vents have Raised Face Flange, Aluminium vents have Flat Face Flange to mate with standard ASME 150# fl ange connections. On sizes 2" through 6", the Model 4200 is available with the same size inlet and outlet to reduce outlet piping cost.
Pallet Diaphragm Material: FEP TFE is Standard. Also available Buna-N, EPDM or Fluorocarbon Elastomer (FKM).
Key Features: The Model 4200 pipe-away conservation vent is part of the Valve Concepts, Inc. modular vent product line. The Model 4200 can easily be converted to a vacuum only vent or end-of-line pressure / vacuum vent and can either be direct acting or pilot operated. Only Valve Concepts, Inc. offers complete modularity throughout its complete vent product line.
Maintains Accurate Settings. The minimum pressure setting is .5 oz./ in2 and the minimum vacuum setting is .5 oz/in2 . Maximum pressure setting is 15 psig and maximum vacuum setting is 15 psig. Lower settings may require weight loading instead of springs on vacuum side. All vents are tested to Valve Concepts, Inc. high standards for both leakage and set point prior to shipment. A certified test certificate is included with each vent verifying the accuracy of both the pressure and vacuum setting and leakage. A leakage rate of less than 1 SCFH at 90% of set point is verified for both pressure and vacuum.
Condensate Drainage. Self-draining housing body and drip rings keep condensate away from seating surfaces, preventing freezing, binding and clogging.
Air-Cushioned Seating. Air-cushion seating provides tight sealing to reduce evaporation losses and the release of toxic vapours into the outlet piping, except under normal breathing conditions. The pallets have outer guiding and center stabilising stem to provide self alignment and tight seating.
Pressure and Safety Systems | Pressure Relief Valves & Pressure Devices
Pressure and Safety System is a Australian importer, stockist and distributor, service and repair agent for several world renowned manufacturers of Safety and Relief Valves, Liquid Level Gauges and ...