4820-00-421-4323, VALVE,PRESSURE EQUALIZING,GASEOU

4720-00-421-4324 HOSE ASSEMBLY,NONMETALLIC

National Stock Number:
4820-00-421-4323

Federal Supply Class:
4820

National Item Identification Number:
004214323

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:

2603533	30003	NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER
790RPV0.1-0.1	98021	HALKEY-ROBERTS CORP

Techincal Specification:

END CONNECTION QUANTITY	1
BODY STYLE	SINGLE CONNECTION, STRAIGHT FLOW
DISK LOADING METHOD	SPRING
FIRST END CONNECTION TYPE	THREADED EXTERNAL BOSS
FIRST END STYLE DESIGNATOR	EXTERNAL SEAT FOR GASKET SEAL
FIRST END THREAD DIRECTION	RIGHT-HAND
FIRST END THREAD CLASS	3A
FLOW CONTROL DEVICE	POPPET
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-A-225/5, ALLOY 2017, T451 FED SPEC SINGLE MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-A-225/5, ALLOY 2017, T451 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
MATERIAL	ALUMINUM ALLOY 2017 BODY
MATERIAL	ALUMINUM ALLOY 2017 FLOW CONTROL DEVICE
MEDIA FOR WHICH DESIGNED	AIR
TEMP RATING	-65.0 CELSIUS AND 160.0 CELSIUS
VALVE RELIEF DESIGN TYPE	PRESSURE AND VACUUM
VALVE VENTING DESIGN TYPE	ATMOSPHERIC

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