US 6,789407 B1
Mag-Tek® features a pressure balanced, piston actuated, proximity switch with no dynamic seals. The switch is factory sealed, with no field adjustment, eliminating the chance of slipping from the original setting. The hemispherical shape of the piston allows either uni-directional or bi-directional operation. The detector switch is manufactured from stainless steel and designed for either above ground or below ground applications. Once installed the Mag-Tek® has only one moving part, the pressure-balanced piston, thus allowing continuous, maintenance free, and accurate operation.
Adaptions are available for other manufacturers' switches.
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