Check Valves

A check valve (or sometimes known as a non return check valve is a device designed to allow the flow of a substance (in this case water) in one direction whilst preventing it from returning in the other if the supply pressure should drop. On-Demand Supplies deliver many different type and styles of check valves including both metric and imperial swing check valve, double check valve and spring check valve and horizontal check valve. They are considered as very important to prevent contaminated water from siphoning back into the water supply network in the event the supply pressure is lost