National Item Identification Number
01-256-8553
012568553
4820-01-256-8553
4820-01-256-8553
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)
01343
ANDERSON GREENWOOD LP
DBA ANDERSON GREENWOOD CROSBY
3950 GREENBRIAR ST
STAFFORD
TX
77477
508-384-4831
03950
NAVAL INVENTORY CONTROL POINT
MECHANICSBURG
5450 CARLISLE PIKE
2020
MECHANICSBURG
PA
17055
717-605-3500
Reference Numbers (Part Numbers)
20270-00387B
20270-00387BCP
Required Categories
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS
CRITICALITY CODE JUSTIFICATION
Required Description
CLEAN IN ACCORDANCE WITH MIL-C-52211
ZZZY
01343
20270-00387B