The TVF-M20GNMM is a TopWorx valve position switchbox with a tropicalised aluminium base and a clear resin lid. It is rated intrinsically safe.
Position sensing is by two mechanical SPDT switches. The switchbox has a standard 90° visual indicator showing green for open and red for closed, a NAMUR 316 stainless steel shaft, two M20 conduit entries and silicone O-rings.
