OCV Valves are hydraulically operated, diaphragm actuated for multi-function control of non-corrosive, non-abrasive fluids. Available in globe or angle configuration, these fully automatic valves operate off line pressure or if desired, from an independent power source. Our wide range of control pilots makes it possible to offer combination models for virtually any fluid-handling need. The basic Series 65 valve contains only one moving part. This simplicity of design promotes dependability, reduces down-time, facilitates service and extends the life of the valve.