Valve size 4.000 in.
A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
NSN 5855-01-350-2454
NSN 5835-00-005-2311
NSN 6220-01-022-5809
NSN 5945-01-412-6907
NSN 7035-00-230-4338
NSN 6685-01-367-3675
NSN 6685-01-440-5085
NSN 2925-01-197-7864
NSN 5965-01-037-1720
NSN 6105-01-015-9006
NSN 6130-01-396-4211
NSN 2925-00-111-4097