Shut off valve that also allows you to control the pressure of water and nutrients being delivered through the manifold to your plants. Easily snaps into the Flora Pipe Fitting and screws into the Quick Disconnect. Our T and Elbow fittings snap into this unit with no glue required. Connects with ForaFlex GHP to NPT Quick Disconnect, no threading required. Manual off and on action, with easy to use valve handle. Maximum pressure 125 psi. Minimum working temperature 40 F and maximum working temperature 140 F. Made of ABS plastic.