Description
RAF 20 valve regulates the pressure level during the start & shut-off of pumps to protect the pumping assembly & the downstream network. The RAF 20 is applicable, with slightly different layout & switching, for either vertical (deep well) or horizontal (booster) pumps.
In both configurations, the RAF 20 is connected electrically to the pump's control panel.
For booster pumps control the RAF 20 is installed on the main line downstream of the pump. Generally the valve protect the booster pump & its engine by sustaining the pressure in starting & shutoff, & function as a check valve otherwise. The valve protects the pump in case of power shutdown by sustaining the pressure downstream the pump.
In deep well configurations, the RAF 20 is installed on a tee branch off the main line. It function basically as a pressure relief. Letting a low pressure in starting & shut-off, & closes other wise to enable a gradual pressure buildup. In case of emergency shutdown, the RAF 20 opens to relieve pressure from the vertical pump.

Applications
Use Pump Control Hydraulic Valve with any pump to protect the pump housing, the pumping accessories & water lines. protection is needed in both horizontal & vertical pumps.

Consult Raphael engineers for the most suitable layout, switching & sizing of pump control valves for your application.