Purge Ports are 1/8" FNPT plugged access ports on the inlet side of the shutoff valves on all Hex manifolds (except HM93/94). They allow for easy draining of impulse lines or the introduction of a purge gas or liquid seal without requiring additional tees and fittings.

Hex 1/8" Test Ports allows transmitter vent/test access, and are located on the outlet side of the manifold (usually behind the shutoff valves).

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