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National Stock Number:
4240-00-368-6143
Federal Supply Class:
4240
National Item Identification Number:
003686143
Description:
VALVE,ANTIBACK DRAFT,PROTECTIVE
Detail:
AN ITEM CONSISTING OF A METAL FRAME, TO WHICH IS ATTACHED A HINGED METAL FLAPPER PLATE. THE FLUCTUATING FLAPPER PLATE AUTOMATICALLY REGULATES THE PRESSURE BETWEEN THE OUTER AIR LOCKS AND THE ATMOSPHERE OF PROTECTIVE SHELTERS. EXCLUDES DRAFT CONTROL, FLUE, AUTOMATIC.
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Manufacturer Information:
| MILV3293 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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