| 摘要 |
<p>A portable test device for set point and leakage testing pressure relief valves using the actual operating fluid includes a housing (3) having a bore, a main piston (37) in the bore to form at one end a test chamber, a translator piston (39) to form at the other end a pressurizing chamber, and a spring pack (41) biasing the pistons apart. An adapter (17) plate mounts on relief valves in communication with the test chamber. With a fixed amount of test fluid sealed in the test chamber, the pressurizing chamber is pressurized in a hydraulic fluid until the valve actuates. The test chamber may be heated if necessary with an optional electric heater which is built in.</p> |
