SENSING VALVES FOR CATEGORY 2, 3
Ross Controls has introduced Series SV27 sensing valves with position and state sensing feedback for Category-2 and Category-3 Safety Applications. The valves are said to combine the tough, dirt tolerant characteristics of poppet technology with sensing for actual poppet position and state.
Electrical feedback is provided via a positively-driven, safety-rated DPDT switch with both normally open and normally closed contacts. The DPDT switch is actuated whenever the valve is not in the normal home position.
Enhanced safety can be achieved by installing an optional visual pressure indicator or pressure switch kit into the 1/8 NPT pressure verification port.