Evolutionary Concepts Inc. offers a complete line of solenoid piloted diaphragm valves. Port sizes are 3/4” or 1” NPT. These valves are available in either normally open or normally closed operation. Operating pressures are from 10 psi to 150 psi with flows up to 40 gpm. Features include a lightweight glass reinforced nylon body, manual override, flow control adjustment (optional) and a smooth operating internal diaphragm that prevents surge hazards and water hammer when the valve opens or closes.