A normally open valve which permits the passage of air or gases in both directions but prevents the passage of liquids in one direction. The action is controlled by a buoyant flow control device which rises against its seat when liquids are present therein.
NSN 5895-00-170-4568
NSN 6105-01-559-4579
NSN 5910-00-125-7122
NSN 5910-00-021-6530
NSN 4140-01-621-3177
NSN 6110-01-363-8818
NSN 5975-00-290-4285
NSN 6620-00-104-6937
NSN 6130-01-566-1269
NSN 5855-00-797-8217
NSN 6685-00-086-0893
NSN 5835-01-122-2747