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 6620-01-588-2319
NSN 6135-01-507-4346
NSN 6650-00-587-6917
NSN 5945-01-430-2222
NSN 6645-01-633-1852
NSN 6650-01-328-8363
NSN 5990-00-052-3143
NSN 5950-00-543-0728
NSN 5975-01-573-6002
NSN 5915-00-553-8613
NSN 4140-00-968-7367
NSN 6220-00-504-1498