4820-00-843-7891, VALVE,SAFETY RELIEF

National Stock Number:
4820-00-843-7891

Federal Supply Class:
4820

National Item Identification Number:
008437891

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:

MIL-V-8813	81349	MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
MS28893-B6	96906	MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
MS28893B6	96906	MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

Techincal Specification:

VALVE OPERATION METHOD	AUTOMATIC
FLOW CONTROL DEVICE	POPPET
MEDIA FOR WHICH DESIGNED	FUEL/OIL, HYDROCARBON SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE	1400.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP	-65.0 DEG FAHRENHEIT 1ST RESPONSE
	275.0 DEG FAHRENHEIT 2ND RESPONSE
VALVE DISCHARGE FLOW RATE	7.0 GALLONS PER MINUTE
CONNECTION TYPE	THREADED INTERNAL BOSS ALL ENDS
CONNECTION STYLE	GASKET SEAL(BOSS) ALL ENDS
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED	0.375 INCHES ALL ENDS
THREAD SERIES DESIGNATOR	UNF ALL ENDS
NOMINAL THREAD SIZE	0.562 INCHES ALL ENDS
THREAD CLASS	3B ALL ENDS
THREAD DIRECTION	RIGHT-HAND ALL ENDS
DISK LOADING METHOD	SPRING
ADJUSTABLE PRESSURE RANGE	825.0 TO 1400.0 POUNDS PER SQUARE INCH
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE	81349
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	MIL-V-8813
MANUFACTURERS CODE	96906
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	MS28893-B6

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