A valve with a stem that may be mechanically actuated to two different positions by rotary or linear motion. In the first position, one side of the valve disk is located against the seat permitting movement of the disk in a manner that will allow a flow of fluid in one direction through the valve. In the second position, the valve disk is lifted from the seat to allow a flow of fluid in either direction through the valve. The valve disk may be spring loaded. See also valve, stop-check and valve, stop-lift-check.
NSN 5925-00-966-7171
NSN 6220-01-106-7845
NSN 2925-01-459-8093
NSN 2925-01-224-1885
NSN 6650-00-536-5564
NSN 6685-01-136-9834
NSN 5998-01-225-8514
NSN 6610-00-391-6390
NSN 6650-00-857-2260
NSN 4140-01-624-6592
NSN 6145-00-493-4073
NSN 6130-01-005-8916