You will fully appreciate the extra built-in quality and reliability of a Nelson control valve when it performs under the most demanding operating conditions. As a hydraulically operated sleeve type valve, the 800 Series is designed for versatility. The basic body can be equipped with several different control packages in various combinations for controlling pressure and flow in large piping systems. It's also engineered for extremely high efficiency, resulting in low friction loss and high capacity. It's light weight and compact for ease of shipping, handling and service. Options include: basic control, manual control, automatic control, pressure control, rate-of-flow control, combination, and special purpose (check valve, sleeve exhaust, special on/off, or special function).
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