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Fisher Emerson Vapor Relief Regulator/Valve 289H-2, BODY SIZE, 2 FNPT

289H.webp

Part Number : 289H-2

Brand : Fisher

Type 289H – relief valve is designed for installation downstream of larger high-pressure or low-pressure regulators in most all relief applications. The larger diaphragm in this relief valve provides extremely sensitive operation, with a temperature rating of -20 to 150°F / -29 to 66°C.

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Description
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Description

Type 1805 – relief valve is designed for installation between the First and Second-Stage regulators or in the downstream line from a high-pressure regulator used for a Final-Stage service where high line pressures are allowed. Available in 1 or 2 in. valve bodies with a temperature rating of -20 to 150°F / -29 to 66°C. Type 289H – relief valve is designed for installation downstream of larger high-pressure or low-pressure regulators in most all relief applications. The larger diaphragm in this relief valve provides extremely sensitive operation, with a temperature rating of -20 to 150°F / -29 to 66°C. Types 1808 and 1808A – pilot-operated relief valve is designed to protect large high-pressure regulators by offering extremely high relief capacities compared to the Type 289H. The Type 1808 has a temperature rating of -20 to 180°F / -29 to 82°C.

Type 289H

Type 289H – relief valve is designed for installation downstream of larger high-pressure or low-pressure regulators in most all relief applications. The larger diaphragm in this relief valve provides extremely sensitive operation, with a temperature rating of -20 to 150°F / -29 to 66°C.

Downloads

Fisher Regulators Datasheet

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Specifications

BODY SIZE, IN.
2 FNPT
RELIEF START-TO-DISCHARGE, psig
24 in. w.c.
RELIEF START-TO-DISCHARGE, bar
60 mbar
SPRING RANGE, psig
1/2 to 2-1/4
SPRING RANGE, bar
34 to 155 mbar
PRESSURE BUILDUP OVER SET PRESSURE, psig
1.13
PRESSURE BUILDUP OVER SET PRESSURE, bar
78 mbar
CAPACITY (AIR), SCFH
15,400 at 2 psig
CAPACITY (AIR), Nm3/h
38 at 138 mbar
Brand
Fisher

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