The RAF 80/82 pressure sustaining/relief valve is line pressure hydraulically actuated, 2-W pilot. The RAF 80/82 maintains a minimum upstream pressure, as set on the 2-W pressure sustaining pilot, regardless of flow changes.
The RAF 80/82 pressure sustaining/relief valve will fully open should upstream pressure exceed 2-W pilot set pressure.
The 2-W pilot configuration together with Raphael’s patented diaphragm enable smooth and precise upstream pressure control.
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