Three new proportional valves with integral digital electronics provide closed loop pressure control through a special pressure transducer. They offer excellent performance for hysteresis, response time, linearity, and stability. The valve's nonlinearity can be adjusted and set using the company's proprietary PC software. Maximum pressure is 315 bar, maximum flow is up to 1000 liters/min, and the units are said to be easy to use. Atos SpA, Sesto Calende, Italy; www.atos.com
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