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 7035-01-620-0131
NSN 5985-00-310-4311
NSN 6610-00-766-6944
NSN 5895-01-435-5090
NSN 6145-01-318-4774
NSN 6610-00-393-5823
NSN 6685-00-175-8227
NSN 5965-01-420-6613
NSN 6240-01-028-9194
NSN 2925-01-633-4048
NSN 5895-01-481-3015
NSN 6220-01-340-1578