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National Stock Number:
4820-00-469-7803
Federal Supply Class:
4820
National Item Identification Number:
004697803
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.
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Manufacturer Information:
| 10180703-3 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND | | 40320-DD-5SV | 77842 | EATON CORPORATION | | B40320DD5SV | 77842 | EATON CORPORATION |
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Techincal Specification:
| BODY MATERIAL | ALUMINUM ALLOY, QQ-A-225/6, ALLOY 2024, T4 | | FLOW CONTROL DEVICE | PISTON, SPRING LOADED | | MAXIMUM OPERATING PRESSURE | 4.2 POUNDS PER SQUARE INCH | | TEMP RATING | -65.0 DEG FAHRENHEIT AND | | 185.0 DEG FAHRENHEIT | | VALVE VENTING DESIGN TYPE | ATMOSPHERIC | | BODY STYLE | SINGLE CONNECTION, STRAIGHT FLOW | | OUTSIDE SURFACE TREATMENT | ANODIZED, MIL-STD-171, FINISH 7.1.1 | | SEAT MATERIAL | ALUMINUM ALLOY, QQ-A-225/6, ALLOY 2024, T4 | | FLOW CONTROL DEVICE MATERIAL | ALUMINUM ALLOY, QQ-A-225/6, ALLOY 2024, T4 | | END CONNECTION QUANTITY | 1 | | FIRST END CONNECTION TYPE | THREADED EXTERNAL BOSS | | FIRST END STYLE DESIGNATOR | EXTERNAL SEAT FOR GASKET SEAL | | FIRST END THREAD CLASS | 3A | | FIRST END THREAD DIRECTION | RIGHT-HAND | | MEDIA FOR WHICH DESIGNED | AIR | | VALVE RELIEF DESIGN TYPE | PRESSURE AND | | VACUUM | | DISK LOADING METHOD | SPRING | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 18876 | | DESIGN CONTROL REFERENCE | 10180703-3 |
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