Elwood's packed spool pilot valve with its unique zero leak design is now being manufactured in China by the Elwood Corporation, a wholly foreign owned enterprise. You can now get American quality and technology at Chinese prices. The Elwood pilot valve is designed specifically for high pressure 15-45mpa raw water applications, perfect for controlling descale valves, directional control valves, and pressure control valves. In addition to the pilot valve Elwood also makes a full line of valves designed specifically for high pressure water applications, including descale valves, decoker valves and the worlds only double safety accumulator shut off valve. For more information please conatact us at 411-6232-8880