4820-01-203-3998 VALVE,CHECK Index 4820-01-203-4000 VALVE,RESTRICTOR CHECK

National Stock Number:
4820-01-203-3999

Federal Supply Class:
4820

National Item Identification Number:
012033999

Description:
VALVE,SAFETY RELIEF

Detail:
A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes VALVE (1), RELIEF, PRESSURE AND TEMPERATURE.


Manufacturer Information:
10413346A486GNIMIKKEISTOKESKUS NCB FINLAND
D524B-1M-252U435DELA TECHNOLOGY CORPORATION
D524B-1M-2591816CIRCOR AEROSPACE, INC.


Techincal Specification:
CONNECTION TYPETHREADED EXTERNAL PIPE 1ST END
CONNECTION STYLEPLAIN (PIPE) 1ST END
FLOW CONTROL DEVICEPLUG
MATERIALCOPPER ALLOY BODY
MAXIMUM OPERATING PRESSURE200.0 POUNDS PER SQUARE INCH 1ST RESPONSE
MAXIMUM OPERATING PRESSURE200.0 POUNDS PER SQUARE INCH 2ND RESPONSE
MAXIMUM OPERATING PRESSURE200.0 POUNDS PER SQUARE INCH 3RD RESPONSE
MAXIMUM OPERATING PRESSURE200.0 POUNDS PER SQUARE INCH 4TH RESPONSE
MAXIMUM OPERATING TEMP450.0 FAHRENHEIT 1ST RESPONSE
MAXIMUM OPERATING TEMP450.0 FAHRENHEIT 2ND RESPONSE
MAXIMUM OPERATING TEMP450.0 FAHRENHEIT 3RD RESPONSE
MAXIMUM OPERATING TEMP450.0 FAHRENHEIT 4TH RESPONSE
MEDIA FOR WHICH DESIGNEDOIL, CHLORINATED TRANSFORMER 2ND RESPONSE
MEDIA FOR WHICH DESIGNEDOXYGEN, GASEOUS 3RD RESPONSE
MEDIA FOR WHICH DESIGNEDOXYGEN, LIQUID 4TH RESPONSE
MEDIA FOR WHICH DESIGNEDAIR 1ST RESPONSE
NOMINAL THREAD SIZE0.125 INCHES 1ST END
STYLE DESIGNATORSTRAIGHT THRU
THREAD DIRECTIONRIGHT-HAND 1ST END
THREAD SERIES DESIGNATORNPT 1ST END
VALVE OPERATION METHODAUTOMATIC


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