MS28764A (NOTICE 1), MILITARY STANDARD: VALVE, CHECK, CONTROLLABLE, ROTARY-ACTION, HYDRAULIC, 3,000 PSI, TYPE II SYSTEMS (30 APR 1999)

MS28764A (NOTICE 1), MILITARY STANDARD: VALVE, CHECK, CONTROLLABLE, ROTARY-ACTION, HYDRAULIC, 3,000 PSI, TYPE II SYSTEMS (30 APR 1999)., This notice should be filed in front of MS28764A, dated 30 April 1957. MS28764A is inactive for new design and is no longer used, except for replacement purposes.