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 STYLE	GASKET SEAL(BOSS) ALL ENDS
CONNECTION TYPE	THREADED INTERNAL BOSS ALL ENDS
DISK LOADING METHOD	SPRING
FLOW CONTROL DEVICE	POPPET
OPERATING PRESSURE	1400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
MAXIMUM OPERATING TEMP	-65.0 FAHRENHEIT FIRST RESPONSE
MAXIMUM OPERATING TEMP	275.0 FAHRENHEIT SECOND 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
VALVE DISCHARGE FLOW RATE	7.0 GALLONS PER MINUTE
VALVE OPERATION METHOD	AUTOMATIC
THREAD CLASS	3B ALL ENDS
THREAD DIRECTION	RIGHT-HAND ALL ENDS
THREAD SERIES DESIGNATOR	UNF ALL ENDS

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