Four thd bolt holes; 1/4-28 unf, class 3b thd 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.
Classification: Check valves of materials other than copper, iron or steel
NSN 5915-00-100-5239
NSN 5945-01-203-2967
NSN 5985-00-482-7205
NSN 6145-01-222-7531
NSN 5895-01-290-5259
NSN 5905-01-106-4480
NSN 5998-01-130-9652
NSN 5855-01-449-5724
NSN 6220-00-077-0050
NSN 5998-00-563-0318
NSN 6145-00-161-5415
NSN 6650-00-195-7519