The Series SCV spring check valves from Dwyer Instruments prevent reversal of flow in piping systems. They are suitable where backflow could potentially cause damage to pumps, filters, or process equipment.
The valves operate without the need for any adjustments or settings. Line pressure moves the plastic cone off the elastomer seat, opening the valve. When the inlet flow stops, a spring moves the cone back onto the seat, stopping the flow.
All Series SCV spring check valves feature a true union design that allows for easy removal from a piping system without breaking down piping connections. Just unscrew the two assembly nuts and lift the valve body out of the line. These valves are available in PVC with EPDM o-rings or CPVC with FPM o-rings and in sizes: ½-in to 4-in.
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