The TVF-M20GNMM1A81 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.
It is fitted with one 24VDC pilot (fail open/closed) and a hard coat anodised aluminium spool valve rated 1.0 Cv with 1/4" BSP ports.
