It is almost impossible to produce a total vacuum: the closer we get to a full vacuum the harder it gets to encourage the remaining molecules to leave, all we have is a partial vacuum (somewhere between 0 inches Hg and 29.92 inches Hg), which creates a differential pressure between the partial vacuum inside the valve and the atmospheric pressure pressing against the exterior of the valve, and this allows to detect and observe potential leakages in the system, if any.
Maverick has a dedicated area and vacuum pumps to perform Vacuum testing, a specific leak testing that simulates operative conditions as described above, internal pressure variation is then detected according to customer specific requirements or according to the applicable standard (i.e. ASME V art. 10).
