National Item Identification Number
01-453-8712
014538712
4820-01-453-8712
4820-01-453-8712
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)
62983
Reference Numbers (Part Numbers)
973333
Required Categories
BODY MATERIAL
TEMP RATING
BULB LENGTH
BULB DIAMETER
OPENING PRESSURE SETTING
Required Description
STEEL, CORROSION RESISTING
NOT RATED
4.000 INCHES NOMINAL
1.125 INCHES NOMINA