13
Testing
Swagelok recommends that the regulator be tested for seat and shell leakage to atmosphere. A well
performing regulator will not show any indication of leaking. If any evidence of a leak is identified this must be
rectified. Any damaged components must be replaced.
Seat Leak Test
1.
Ensure there is sufficient supply pressure to the regulator to be able to perform the tests.
2.
Ensure any downstream shutoff valves are open.
3.
Set the regulator to its maximum set pressure then close the supply shutoff valve.
4.
Monitor the inlet pressure and/or use liquid leak detector on the outlet port. A drop in inlet pressure over
time or bubbles in the leak detector indicates a seat leak.
Shell Leak Test
1.
Set the regulator to the open position (i.e. ensure the set screw is fully backed off counterclockwise).
2.
Close the downstream shutoff valve.
3.
Maintain an inlet pressure of approximately 14.5 psig (1 bar) on the regulator. Measure the outlet
pressure to ensure this also reads the same value.
4.
Using liquid leak detector, check for bubbles at the spring housing to body interface and the spring
housing weep hole.
Summary of Contents for TBVS4
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