1-1/4 in. Size
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 5925-00-229-8024
NSN 5975-00-127-9989
NSN 6220-01-158-5956
NSN 6150-01-507-9803
NSN 5975-01-351-1159
NSN 5998-01-574-0990
NSN 6135-00-062-5080
NSN 6110-01-029-3403
NSN 5950-01-051-1291
NSN 7035-00-188-6674
NSN 6110-00-983-5927
NSN 6320-01-033-6624