Part of leak detector gun, sm-158
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 6145-00-231-6257
NSN 4140-01-596-5380
NSN 5920-01-327-7125
NSN 5960-01-194-4506
NSN 6110-01-389-6208
NSN 4140-01-434-5574
NSN 5999-01-093-7158
NSN 2925-01-139-7098
NSN 5920-01-523-1415
NSN 6320-01-422-1212
NSN 5920-01-660-5406
NSN 5935-00-394-3726