Many process applications require a reliable feedback signal. In case of ball- or butterfly valves no problem arise. For these there are lots of appropriate solutions.
Electrical feedback from hand wheel operated valves.
As mentioned earlier; a reliable feedback is a must. However, how can you trust a system where the switches are hanging in the free air, wires are not protected, brackets weakly welded, etc… The common weld-on solutions create process disruptions, false alarms, products contamination and are a nightmare for the maintenance department.
Valve Position Indicator
In the hectic of the petrochemical industries it is 100% necessary to have a proper remote signal from hand operated gate-, globe- or rising stem (ball) valves. The DCS system or control room counts on it. The V.P.I. is ultimate solution. Simple to mount, cost effective (far cheaper than actuators) and reliable.
The VPI is a universal switchbox that can be mounted to all type of hand wheel operated valves. After installation the VPI is an integral part of the valve.
With a VPI you avoid welding, loose wiring and weak brackets. Furthermore, the hand wheel remains fully accessible.
The stainless steel 316 VPI has the switches internally and protected. The easy adjustable setting can be done in the field. The robust unit guarantees a 100% reliable signal that you can trust.