4820-01-013-8987, VALVE,SAFETY RELIEF

National Stock Number:
4820-01-013-8987

Federal Supply Class:
4820

National Item Identification Number:
010138987

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:

10291702-1	18876	U S ARMY AVIATION AND MISSILE COMMAND
D524A-3M-20	91816	CIRCOR AEROSPACE, INC.

Techincal Specification:

ADJUSTABLE PRESSURE RANGE	+0.5 TO 200.0 POUNDS PER SQUARE INCH
CONNECTION STYLE	PLAIN (PIPE) FIRST END
CONNECTION TYPE	THREADED EXTERNAL PIPE FIRST END
DISK LOADING METHOD	SPRING
FLOW CONTROL DEVICE	POPPET
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-A-225/6,ALLOY 2024 FED SPEC SINGLE MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-A-225/6,ALLOY 2024 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-A-225/6,ALLOY 2024 FED SPEC SINGLE MATERIAL RESPONSE SEAT
MATERIAL	ALUMINUM ALLOY 2024 FLOW CONTROL DEVICE
MATERIAL	ALUMINUM ALLOY 2024 BODY
MATERIAL	ALUMINUM ALLOY 2024 SEAT
MAXIMUM OPERATING TEMP	400.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNED	WATER-OIL-GAS SINGLE RESPONSE
NOMINAL THREAD SIZE	0.375 INCHES FIRST END
OPENING PRESSURE SETTING	20.0 POUNDS PER SQUARE INCH
OPERATING PRESSURE	200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
VALVE OPERATION METHOD	AUTOMATIC
STYLE DESIGNATOR	STRAIGHT THRU W/BAFFLE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-A-8625,TY 1 MIL SPEC SINGLE TREATMENT RESPONSE LOCATION NOT OTHERWISE SPECIFIED
SURFACE TREATMENT	ANODIZE LOCATION NOT OTHERWISE SPECIFIED
THREAD DIRECTION	RIGHT-HAND FIRST END
THREAD SERIES DESIGNATOR	NPT FIRST END

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