Relief Valve or Backpressure Regulator Fisher™ Type 289P
Fisher Type 289P pilot-operated relief valve is used to provide over pressure protection for downstream systems suitable for service on natural gas, air, propane, or any other operating medium not corrosive to the internal parts. Smooth opening action minimizes system pressure surges during emergency action. Very little buildup over set pressure is required to completely open the main valve for max relief capacity. The external control line provides quick, accurate pressure registration.
Kategori: Regulator
Brand: Fisher-Emerson
Body Sizes and End Connection Styles1 or 2 NPT Maximum Relief (Inlet) Pressure1 NPT: 50 psig / 3.4 bar over relief set pressure or 110 psig / 7.6 bar whichever is lower 2 NPT: 15 psig / 1.0 bar Relief Set Pressure Range1 NPT: 10 to 100 psig / 0.69 to 7.0 bar in three ranges 2 NPT: 14-inches w.c. to 10 psig / 35 mbar to 0.69 bar in two ranges Pressure RegistrationExternal Temperature CapabilitiesWith Nitrile (NBR): -20 to 180°F / -29 to 82°C With Fluorocarbon (FKM): 0 to 300°F / -18 to 149°C Approximate Weights1 NPT: 5 pounds / 2.3 kg 2 NPT: 15 pounds / 6.8 kg
