Description of Tool Usage:

The pressure relief valve test equipment is used to test pressure relief valves. A21010-70 may be worked into the A21010-72 by replacing A21010-66 with A21010-74 and adding 33410LH-125-4. Tool consists of an enclosure assembly, a vacuum head assembly, a tank assembly, a static port adapter, two vacuum pumps, a suction hose, a pressure gage, a differential pressure gage, a vacuum rate gage, two mufflers, a vacuum regulator, and associated hardware.