The end connection identified above as the first end is the valve inlet
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 6645-01-391-9820
NSN 6135-01-468-6491
NSN 6145-01-394-2429
NSN 6320-00-004-9158
NSN 6220-00-789-5880
NSN 5999-00-594-9180
NSN 5990-00-816-9289
NSN 4140-01-479-3405
NSN 5999-01-375-9742
NSN 5975-01-485-2385
NSN 5996-01-123-9038
NSN 6135-00-958-7981