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 5999-01-440-0648
NSN 5965-01-331-5431
NSN 5985-00-917-2290
NSN 6220-01-435-4839
NSN 5998-01-487-0760
NSN 6320-01-461-5866
NSN 6145-00-801-4621
NSN 5990-00-878-1271
NSN 6110-01-413-9385
NSN 5975-00-802-6531
NSN 6130-01-132-3756
NSN 6320-00-809-5744