4820-01-256-8744, VALVE,SAFETY RELIEF

National Stock Number:
4820-01-256-8744

Federal Supply Class:
4820

National Item Identification Number:
012568744

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:

9955.K 5IM,TYPE	96101	GAS EQUIPMENT ENGINEERING CORPORATION, THE DBA GEECO
D841-4050	96101	GAS EQUIPMENT ENGINEERING CORPORATION, THE DBA GEECO
UU-1551-T	01343	ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
D841-4050CP	03950	NAVAL INVENTORY CONTROL POINT MECHANICSBURG
UU-1551-TCP	03950	NAVAL INVENTORY CONTROL POINT MECHANICSBURG
UU-1551-T	15187	EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP

Techincal Specification:

STYLE DESIGNATOR	ANGLE
MATERIAL	COPPER ALLOY 922 BODY
	NICKEL ALLOY 400 FLOW CONTROL DEVICE
	NICKEL ALLOY 400 SEAT
	NICKEL ALLOY 400 STEM
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE BODY
	QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
	QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE SEAT
	QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE STEM
FLOW CONTROL DEVICE	DISK
MEDIA FOR WHICH DESIGNED	OXYGEN, LIQUID SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE	400.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
VALVE DISCHARGE FLOW RATE	128.0 CUBIC FEET PER MINUTE
DISK LOADING METHOD	SPRING
OPENING PRESSURE SETTING	80.0 POUNDS PER SQUARE INCH
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS	CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
CRITICALITY CODE JUSTIFICATION	ZZZY
THE MANUFACTURERS DATA
MANUFACTURERS CODE	03950
DESIGN CONTROL REFERENCE	UU-1551-TCP

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