The Irrigation Non Return Valve is made available by us for use in various commercial and agricultural purposes. The main function of a non-return valve (NRV), otherwise known as stop or check valve is to allow steam flow in one direction, and automatically prevent backflow. These are the valves that turn on and off the sprinklers; they also may be used for drip irrigation systems. The offered Irrigation Non Return Valve is very useful and easy to install.