Plastic & brass check valves

Check valves are used in systems to prevent backflow. The valves can be equipped in two different ways. Firstly, a floating ball in it that will check up inside the valve once the flow is stopped in the system. The other way make use of the swing check method. The valve comes with a flap inside of it that will allow media to flow through a certain way then the flap will close once the flow is shut off to prevent the media from changing directions. This valve will not allow backflow into the system when installed properly. The check valve will come with an arrow on it to denote which direction the flow is allowed to move. Here we have a wide range of plastic check valves for your system.