BACK PRESSURE REGULATOR RELIEF VALVE - Aerodyne Controls - #1

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CLOSED With the unit spring load adjusted to the desired regulated “set” pressure, a dead tight seal is effected against the applied upstream pressure by the small seating spring contained within the piston. REGULATING When the upstream process pressure (acting on the regulating piston) increases, an opposing force is generated which, through the regulating piston, acts against the “set” spring load. As the increasing upstream pressure level reaches the “set” pressure, the poppet is gradually lifted off its seat. A consequent decrease in upstream pressure is experienced when the flowing fluid is relieved to the downstream side of the process at a faster rate than the upstream pressure can supply. With decreasing upstream pressure, the spring force starts the poppet moving toward its closed position thus maintaining the desired “set” pressure level within a narrow band. When the upstream pressure has decreased to a level just below “crack,” the spring loaded poppet again creates a tight seal against the sharp edge of the valve seat. BPR7A-12A SERIES INLET & OUTLET 25 to 10,000 PSIG How It Works BACK PRESSURE REGULATOR RELIEF VALVE Features • High Pressure • Outstanding Accuracy & Response • Manually Adjustable • Positive Shutoff Applications • Compressors • Gas & Liquid Sampling • Pump Bypass • Hydrostatic Testing • Relief Valve Requirements • Pressure Vessel Protection Technical Data Materials of Construction Body – 316 Stainless Steel Seals – Buna N, Neoprene or Viton® Seat – Kel F, Kynar, Nylatron GS or Polyimide Adjusting Spring – Cadmium Plated High Carbon Steel Other Springs – Stainless Steel Other Components – Stainless Steel & Teflon® Port Sizes & Connections Flow Capacity 1/4” Pipe, AND10050-4, Cv = 0.017 or AND10050-6 Pressure Ratings Inlet & Outlet – 25 to 10,000 PSIG (690 BAR) Temperature Range Weight -65°F to +160°F; 4.2 lbs. -54°C to +71°C Certified to ISO 9001 2301 WARDLOW CIRCLE • P.O. BOX 3300 • CORONA, CALIFORNIA • 92878 • TEL: (909)270-6200 • FAX: (909) 270-6201