Fisher
Fisher H800 Relief Valves
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Fisher™ Type H800 Relief Valves
Km: 0.79Maximum Allowable Inlet (Relief) Pressure250 psig / 17.2 barRelief Pressure RangeNon-adjustable, start-to-discharge between 39 to 44 psig / 2.7 to 3.0 barReseat Pressure35 psig / 2.4 bar or higherTemperature Capabilities-20 to 150°F / -29 to 66°CApproximate Weight5 ounces / 140 gramsAdditional Technical DataFor additional technical information, contact your local Sales Office or refer to technical documentation.
Type H800 relief valve is a compact, lightweight, direct-operated relief valve. It is used primarily between a pneumatic instrument and its supply pressure regulator to limit the instrument supply pressure to 50 psig / 3,4 bar should the supply pressure regulator fail open.
FeaturesApplication DependabilityEasy InstallationEconomicalTamper-ResistantSpecificationsBody Size and End Connection Style1/4 NPTFlow CoefficientWide-Open Cg: 55Km: 0.79Maximum Allowable Inlet (Relief) Pressure250 psig / 17.2 barRelief Pressure RangeNon-adjustable, start-to-discharge between 39 to 44 psig / 2.7 to 3.0 barReseat Pressure35 psig / 2.4 bar or higherTemperature Capabilities-20 to 150°F / -29 to 66°CApproximate Weight5 ounces / 140 gramsAdditional Technical DataFor additional technical information, contact your local Sales Office or refer to technical documentation.
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