Avcon Controls manufactures 3 Way Pilot Operated, Diaphragm Type, Solenoid Valves. Avcon Controls is a manufacturer of Industrial Duty Automated Valves , Solenoid Valves. 3 Way Pilot Operated, Diaphragm Type, Solenoid Valves has Large ported full flow, reliable, compact, maintenance free valve. 3 Way Pilot Operated, Diaphragm Type, Solenoid Valves is used for Operating single acting cylinders, Diaphragm operators, textile processing machinery, air compressor and many other uses.