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:

STYLE DESIGNATOR	ANGLE
VALVE OPERATION METHOD	AUTOMATIC OR
	MANUAL
MATERIAL	COPPER ALLOY BODY
	COPPER ALLOY FLOW CONTROL DEVICE
	NICKEL ALLOY SEAT
	COPPER ALLOY STEM
FLOW CONTROL DEVICE	DISK
MEDIA FOR WHICH DESIGNED	STEAM 1ST RESPONSE
	AIR 2ND RESPONSE
MAXIMUM OPERATING PRESSURE	200.0 POUNDS PER SQUARE INCH 1ST RESPONSE
	300.0 POUNDS PER SQUARE INCH 2ND RESPONSE
MAXIMUM OPERATING TEMP	425.0 DEG FAHRENHEIT 1ST RESPONSE
	350.0 DEG FAHRENHEIT 2ND RESPONSE
CONNECTION TYPE	THREADED INTERNAL PIPE ALL ENDS
CONNECTION STYLE	PLAIN,OPTIONAL END(PIPE) ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED	1.250 INCHES 1ST END
THREAD SERIES DESIGNATOR	NPT ALL ENDS
NOMINAL THREAD SIZE	1.250 INCHES ALL ENDS
THREAD DIRECTION	RIGHT-HAND ALL ENDS
BONNET TYPE	EXPOSED SPRING
BONNET ATTACHMENT METHOD	UNION
DISK LOADING METHOD	SPRING
ADJUSTABLE PRESSURE RANGE	4.0 TO 9.0 POUNDS PER SQUARE INCH
FEATURES PROVIDED	VALVE STEM LOCK SHIELD

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