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Fisher Emerson Vapor Relief Regulator/Valve 1808A-61, BODY SIZE, 2 FNPT, Angle

1808.webp

Part Number : 1808A-61

Brand : Fisher

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.

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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 1808A

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.

Downloads

Fisher Regulators Datasheet

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Specifications

BODY SIZE, IN.
2 FNPT, Angle
RELIEF START-TO-DISCHARGE, psig
20
RELIEF START-TO-DISCHARGE, bar
1.4
SPRING RANGE, psig
15 to 40
SPRING RANGE, bar
1.03 to 2.76
PRESSURE BUILDUP OVER SET PRESSURE, psig
10
PRESSURE BUILDUP OVER SET PRESSURE, bar
0.69
CAPACITY (AIR), SCFH
78,230 at 30 psig
CAPACITY (AIR), Nm3/h
2053 at 2.07 bar
Brand
Fisher

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