National Item Identification Number
01-163-0189
011630189
4820-01-163-0189
4820-01-163-0189
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)
80020
Reference Numbers (Part Numbers)
621990-1
Required Categories
SEAT MATERIAL
END CONNECTION QUANTITY
TEMP ADJUSTABILITY
TEMP RATING
VALVE D
Required Description
STEEL, QQ-S-763, CLASS 303
1
NOT ADJUSTABLE
NOT RATED
NOT RATED
NOT RATED;