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Catalog 3501E Metric Metric Slow Start Flow Control Valves Prestostart Pneumatic slow start fittings Principle Designed for mounting on either the FRL or power valve, Parker Prestostart slow start function fittings permit the gradual increase in pressure to a section of the pneumatic system. This prevents shocks to the system that may occur when full system pressure is System Allen Key adjustment Power introduced thus reducing wear and potential Isolating Valve Gold identification washer damage to components. Valve Slow start regulator C PIV Series Spring � Mounted on outlet port of FRL to control Adjustable needle downstream installation. � Initial flow through the bolt is controlled by a Valve restrictor and adjustable needle valve. � When 2/3 of the system pressure is To achieved the spring is compressed allowing cylinder immediate increase to full system pressure. � When the system is pressurized after an emergency stop all cylinders will return to FRL the rest position. PCV Series � Mounted on the supply port of the power Adjustment by Allen Key valve or on the common supply of associated power valves. Black identification washer � Initial flow into the power valve is controlled Pressure speed regulator by the needle valve assembly. Spring � When 2/3 of the system pressure is achieved the spring is compressed allowing Adjustable needle immediate increase to full system pressure. Valve � When the system is pressurized after an emergency stop all cylinders will return to From From the rest position. FRL FRL Pressurization speed Adjustment of the needle valve to regulate the air flow controls the time taken to pressurize Power valve the system. Adjustment � Use a spanner to prevent the bolt assembly Supply turning. pressure � Use an Allen key to adjust the needle valve. Maximum torque 1N/m. Spanner P Full Flow r rte -sta low h s wit time Adjustable time Technical features BODY MATERIAL BOLT BOLT SEALING WORKING WORKING ASSEMBLY TERMINATORS PUSH-IN THREAD THREAD DEVICE TEMP. PRESSURE MATERIAL VERSION VERSION High Brass Nickel Brass Nickel 1/4 BSPP Nylon 8 to 12 mm 1/4 to 1/2 From 0� to 100 PSI Resistance Plated Plated 3/8 BSPP Washer Push-In BSPP +140� F Polyamide 1/2 BSPP Female Thread Parker Hannifin Corporation C15 Parker Brass Products Division Otsego, Michigan Metric
Goodyear Rubber Products
