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Limit Switch Box for Quarter Turn Valves

| Editor: Ahlam Rais

The Gemü LSC electrical position indicator is fitted to the Gemü 481 Victoria butterfly valve.
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The Gemü LSC electrical position indicator is fitted to the Gemü 481 Victoria butterfly valve. (Source: Gemü Group)

The Ingelfingen-based valve specialist Gemü is launching electrical position indicators for manually and pneumatically operated quarter turn valves. To automate process plants, the Gemü LSC limit switch box detects the valve position of manually and pneumatically operated quarter turn valves. This is signalled by an optical indication and transmitted to the plant control system.

The Gemü LSC position indicator can be fitted to all quarter turn valves, such as butterfly valves or ball valves, with a VDI/VDE 3845 standard interface. The company offers pre-installed solutions on Gemü butterfly valves or ball valve, but retrofitting is also possible. Up to four position feedback messages can be sent.

In addition to simple microswitches, the limit switch is also available with 2-wire or 3-wire proximity switches. It has the protection class IP 67 and is suitable for explosion-proof areas according to ATEX and IECEX. The limit switch box has also been checked to ensure the reliability of safety functions and has SIL approval. A 3D optical position indicator or open/closed LED display is optionally available. A variety of electrical connections are also available, such as an M20 cable gland, an M12 plug or an NPT threaded connection, adds the company.

Besides the existing Gemü LSF inductive dual sensor, the company is expanding its range of electrical position indicators for quarter turn valves with the addition of the Gemü LSC limit switch box, therefore enabling quarter turn valves to be integrated and controlled in automated plants.

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