National Item Identification Number

01-253-6686
012536686
4820-01-253-6686
4820-01-253-6686

National Stock Number

Item Name

VALVE,RELIEF,PRESSURE AND TEMPERATURE

Federal Supply Class

4820

Description

A valve designed to release under excessive pressure and/or excessive temperature by opening at a predetermined pressure and/or temperature. Thermostatically operated valves close when the pressure is relieved or the temperature is reduced. Fusible plug valves require replacement of the plug. See also VALVE, SAFETY RELIEF and VALVE, REGULATING. TEMPERATURE.

Commercial and Government Entity Code (Supplier Data)

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98752

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Reference Numbers (Part Numbers)

NRV250B-135B
8431394

Required Categories

BODY STYLE
BODY MATERIAL
FLOW CONTROL DEVICE
END CONNECTION QUANTITY
FIRST E

Required Description

A47 SINGLE CONNECTION STRAIGHT THRU
BRASS, QQ-B-626, ALLOY 360, 1/2H
DISK, FLA