Series SCV Spring Check Valves provide an exact and reliable control of fluids. The SCV Spring Check Valves prevent reversal of flow in piping systems. They are ideal 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. The spring is constructed from 316 stainless steel. All 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. Series SCV Spring Check Valves are the valves of choice for cost sensitive applications that require a full-featured, no compromise value.