The UNIV-20-40-XX was designed to overcome the challenges routinely faced when performing the functional test on the safety / pressure relief valves.
If the task calls for applying vacuum to open the valves, in most cases a pitot static test set is used. Depending on field elevation and overall health of the test set, it could pull a valve open to about -8.7psi. However, if the test set has any internal leakage, the -8.7psi is greatly reduced.
The solution is the UNIV-20-40-XX, a standalone digital vacuum pump that senses field elevation. This heavy-duty vacuum pump with simple controls, allow the task to be completed in a fraction of the time and with a higher degree of accuracy.
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