Spring Check Valves provide a reliable and exact control of fluids, and designed to reverse flow into piping systems. They are the preferred option in which back flow could cause damage to pumps, process equipment and filters. Valves will operate without the need for settings or adjustments and the pressure from the line opens the valve. Once the inlet flow ceases, a spring moves the cone back toh stop the flow. The spring construction is stainless steel. All valves feature a true union design which will allow for removal from a piping system without the need to break down.