In the power generation industry, reliability is a must. This is especially true when it comes to turbine control valves. But one of the more common difficulties in power plants is the typical limit switch arrangement on throttle, governor, intercept, and reheat stop valves. Conventional limit switches in this application are notorious for failing due to heat and physical abuse, and for falling out of tolerance and requiring readjustment.

TopWorx has solved this problem with the Defender turbine trip switch system. Made especially for turbine valves, the Defender is packed with up to 10 reliable GO Switch leverless limit switches, and is designed as a direct, drop-in replacement for existing OEM limit switches on Westinghouse or General Electric turbines.

TopWorx Defender System with trusted GO Switch technology

Solid 304 Stainless Steel

1- Complete drop-in system includes seven GO Switches (up to 10 optional)

2- Universal mounting pads enable mounting on literally any axis

3- Calibration unit makes final setting of switches and targets a breeze. Set it and forget it.

4- Valve rod connects to the Defender arm. The arm is welded to a 7/8" diameter shaft carried in permanently lubricated bearings.

5- Rugged and reliable to withstand high frequency vibration and extreme temperatures