The Cla-Val 20-01/620-01 Blending Valve is used in systems for controlling the flow of one fluid in relation to another. It operates to maintain a pre-set percentage of one fluid to the other regardless of
fluctuating demands on the blend.

The valve is a hydraulically operated, pilot controlled, diaphragm type. It is operated by line pressure and responds to commands from the pilot control. It maintains equal pressure at two sensing points, one in each line of fluid being blended. With a restriction in each line between the blending point and the sensing point, a flow rate in direct proportion to the capacities of the restrictions will be maintained. By capacity adjustment of one or both restrictions, the percentage of one fluid to the other is adjusted.