Netherlocks Safety Systems' Valve Position Indicator (VPI) provides process facility control rooms with a remote signal, allowing personnel to maintain awareness of the current position of handwheel-operated gate valves. The VPI uses a mechanical counter to convert a valve's open and closed positions to electronic signals. This ensures the accuracy of valve status signals sent to the control room. Each VPI is custom built, allowing customers to choose whichever electronic switch they prefer. Netherlocks Safety Systemswww.netherlocks.com