The TVF-12WYNMM is a TopWorx valve position switchbox with a tropicalised aluminium base and a clear resin lid. It is supplied without hazardous area approvals.
Position sensing is by two PNP normally open inductive proximity sensors. The switchbox has a 90° visual indicator showing yellow for open and black for closed, a NAMUR 316 stainless steel shaft, two M20 conduit entries and silicone O-rings.