4820-00-990-9043, VALVE,PRESSURE EQUALIZING,GASEOU

National Stock Number:
4820-00-990-9043

Federal Supply Class:
4820

National Item Identification Number:
009909043

Description:
VALVE,PRESSURE EQUALIZING,GASEOU

Detail:
A VALVE CONSISTING OF A SINGLE DEADWEIGHT LOADED DISK, OR TWO DEADWEIGHT LOADED DISKS EACH WITH A SEPERATE SEAT. IT IS SPECIFICALLY DESIGNED FOR THE RELIEF OF SMALL PRESSURE AND VACUUM CONDITIONS WITHIN A TANK OR OTHER CONTAINER TO OR FROM THE ATMOSPHERE. THE CENTER OF A SINGLE DEADWEIGHT LOADED DISK MAY CONTAIN A SPRING LOADED DISK FORMING AN ADDITIONAL SEAT OR APERTURE. IT MAY BE SPRING LOADED AND/OR EQUIPPED WITH A MANUAL UNLOADER ON EITHER THE PRESSURE OR VACUUM SIDE. EXCLUDE VALVE, VACUUM BREAKING.

Manufacturer Information:

10215194	18876	U S ARMY AVIATION AND MISSILE COMMAND
HV194	15939	STRATOTECH LLC

Techincal Specification:

END CONNECTION QUANTITY	1
BODY STYLE	SINGLE CONNECTION STRAIGHT THRU
FIRST END CONNECTION TYPE	THREADED EXTERNAL TUBE
FIRST END OUTSIDE DIAMETER TUBE ACCOMMODATED	0.875 INCHES NOMINAL
FIRST END SEAT ANGLE IN DEG	37.5
FIRST END STYLE DESIGNATOR	EXTERNAL SEAT FOR GASKET SEAL
FIRST END THREAD CLASS	2A
FIRST END THREAD DIRECTION	RIGHT-HAND
FLOW CONTROL DEVICE	DISK, PLUG TYPE
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-A-268, T3 FED SPEC SINGLE MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-A-250/4, ALLOY 2024, T3 FED SPEC SINGLE MATERIAL RESPONSE SEAT
MATERIAL	ALUMINUM ALLOY 2024 BODY
MATERIAL	ALUMINUM ALLOY 2024 SEAT
MEDIA FOR WHICH DESIGNED	STEAM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-A-8625, TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE
SURFACE TREATMENT	ANODIZE OUTSIDE
VALVE RELIEF DESIGN TYPE	PRESSURE
VALVE VENTING DESIGN TYPE	ATMOSPHERIC

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