This Pro-Spray Check Valve holds back drainage caused by 10 ft. of elevation change. By preventing pipes from draining out at the lowest spray head, this valve protects against wasted water and landscape damage caused by flooding and erosion.

　　- Installs into 4 in., 6 in. and 12 in. pop-up Hunter Pro-Spray bodies

　　- Can be field installed after head installation

　　- Installs above or below ground

　　- Holds up to 10 ft. of elevation change

　　- Prevents pipes from draining out at the lowest spray head

　　- Protects against wasted water and landscape damage caused by flooding and erosion