A valve having an orifice in the poppet, disk, or the like, to permit restricted fluid flow when the valve is seated. It does not have a stem or provisions for pressure adjustments, and is similar to a valve, check with the exception of the orifice which permits fluid flow in more than one direction.
Classification: Check valves of steel
NSN 4140-01-424-0611
NSN 4140-00-981-8580
NSN 5996-00-597-2234
NSN 6685-00-198-9506
NSN 5925-01-597-5830
NSN 6135-01-374-6631
NSN 6240-01-439-4590
NSN 6610-01-169-6134
NSN 5990-00-717-3432
NSN 6220-01-398-0614
NSN 5960-01-331-3817
NSN 5965-00-639-6621