MIL-V-22549D (AMENDMENT-1), MILITARY SPECIFICATION: VALVE, ANGLE, RELIEF, FOR GAS AND OXYGEN SERVICE (SIZES 2 INCHES LPS AND BELOW), NAVAL SHIPBOARD (13-APR-1977)

MIL-V-22549D (AMENDMENT-1), MILITARY SPECIFICATION: VALVE, ANGLE, RELIEF, FOR GAS AND OXYGEN SERVICE (SIZES 2 INCHES LPS AND BELOW), NAVAL SHIPBOARD (13-APR-1977).