4820-00-287-4105, VALVE,SAFETY RELIEF

National Stock Number:
4820-00-287-4105

Federal Supply Class:
4820

National Item Identification Number:
002874105

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:

460-0275-000	76371	MECHANICAL EQUIPMENT COMPANY, INC.
51-143PC580	70876	BATH IRON WORKS CORPORATION
51-160PC580	70876	BATH IRON WORKS CORPORATION
51-332PC580	70876	BATH IRON WORKS CORPORATION
51-335PC580	70876	BATH IRON WORKS CORPORATION
51-391PC580	70876	BATH IRON WORKS CORPORATION
51-449PC580	70876	BATH IRON WORKS CORPORATION
M36461-1PC46	70876	BATH IRON WORKS CORPORATION
M36548-1PC580	70876	BATH IRON WORKS CORPORATION
M36558-2ALT1PC580	70876	BATH IRON WORKS CORPORATION
M36558-2PC580	70876	BATH IRON WORKS CORPORATION
M36737PC580	70876	BATH IRON WORKS CORPORATION
M36812PC580	70876	BATH IRON WORKS CORPORATION
V009	70876	BATH IRON WORKS CORPORATION

Techincal Specification:

ADJUSTABLE PRESSURE RANGE	+4.0 TO 9.0 POUNDS PER SQUARE INCH
BONNET ATTACHMENT METHOD	UNION
BONNET TYPE	EXPOSED SPRING
CONNECTION TYPE	THREADED INTERNAL PIPE ALL ENDS
CONNECTION STYLE	PLAIN,OPTIONAL END(PIPE) ALL ENDS
DISK LOADING METHOD	SPRING
FEATURES PROVIDED	VALVE STEM LOCK SHIELD
FLOW CONTROL DEVICE	DISK
OPERATING PRESSURE	200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE
OPERATING PRESSURE	300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE
MATERIAL	COPPER ALLOY BODY
MATERIAL	COPPER ALLOY FLOW CONTROL DEVICE
MATERIAL	COPPER ALLOY STEM
MATERIAL	NICKEL ALLOY SEAT
MAXIMUM OPERATING TEMP	350.0 FAHRENHEIT SECOND RESPONSE
MAXIMUM OPERATING TEMP	425.0 FAHRENHEIT FIRST RESPONSE
MEDIA FOR WHICH DESIGNED	AIR SECOND RESPONSE
MEDIA FOR WHICH DESIGNED	STEAM FIRST RESPONSE
NOMINAL PIPE SIZE ACCOMMODATED	1.250 INCHES FIRST END
NOMINAL THREAD SIZE	1.250 INCHES ALL ENDS
VALVE OPERATION METHOD	AUTOMATIC OR MANUAL
STYLE DESIGNATOR	ANGLE
THREAD DIRECTION	RIGHT-HAND ALL ENDS
THREAD SERIES DESIGNATOR	NPT ALL ENDS

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