The RAF 60 and RAF 62 are piloted hydraulic valves activated by line pressure. The pilot valve has a spirng-loaded membrane, which is sensitive to downstream pressure. The pilot's spring is preset to a desirable reduced pressure. The pilot valve maintains a constant downstream pressure by gradually opening and closing of the main valve. The pressure is maintanied constant regardless of changes in the flow rate.
use for general water supply systems with medium pressure rating. The 2-way pilot configuration together with Raphael's patented diaphragm enables smooth and precise pressure control.
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