Thd series designator is non-std
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.
Classification: Check valves of steel
NSN 5855-01-095-5299
NSN 6610-00-463-1866
NSN 6320-01-478-9351
NSN 5975-01-608-4329
NSN 5990-01-049-8499
NSN 6645-00-276-7544
NSN 5935-01-230-5556
NSN 6110-00-170-6520
NSN 5910-01-029-3949
NSN 6130-00-735-5366
NSN 4140-01-273-4891
NSN 6105-01-202-9339