Netherlocks has introduced a system to overcome the problem of false alarms on valves.
It is generally known that it almost impossible to mount switches on manually operated gate or globe valves. Weak brackets which disrupt hand wheel operation, loose wiring and unprotected switches are some of the reasons why standard switch installations can give a false remote signal. These false signals can disturb processes and are a nightmare for electrical maintenance engineers. The Netherlocks VPI is especially designed to avoid all these problems. The VPI is mounted integrally to the valve, which assures a 100% trustworthy feedback. The switches are fully protected and can be of any make. Due to the simplicity the VPI can be mounted to valve without any modification and even while the plant is in operation.
