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The KENCO Model KEFS uses a float to determine the presence or absence of liquid in a vessel at the process connection. The float arm assembly consists of a float at one end and a magnet at the other. As the level in the vessel rises, the float rises and the magnet falls. The magnet actuates a second magnet on the other side of the pressure boundary. This second magnet causes the switch to change state.

The pressure boundary contains no seals; it is a solid stainless steel barrier that passes a magnetic field, but no liquids. It is impossible for the process liquid to enter the switch enclosure through this barrier. The electrical contacts consist of a microswitch that can be either a single-pole, Double-throw (SPDT) or Double-pole, Double-throw configuration (DPDT). The SPDT Switch is available with either a 5 Amp or 8 Amp current load. The DPDT Switch is only available with a 4 Amp current load.



Specific Gravity ≥ 0.53
Wetted Parts 303/304 Stainless Steel
Process Connection Size 2” NPT

Temperature Range

-67°F to 257°F (-55°C to 125°C)
Process Pressure Range Vacuum to 2000 psig
Switch Types & Ratings

SPDT; 8A @ 250Vac; 12A @ 125Vac resistive 

Housing Rating (CSA Certified) Division 1;  Class I; Groups C &    D Class II; Groups E, G Class III; Type 4X/7/9; 
Conduit Connection 1/2” NPT