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:

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

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