King Innovation 1 Inch Screw-In King Drains Valve Protectors

King Innovation 1 Inch Screw-In King Drains Valve Protectors, Bag of 5 Features:

• Designed for 1 inch poly pipe.
• First class design that prevents blow-outs by removing residual water and providing protection against early winter freeze and frost.
• Pressure sensitive valve that releases water slowly.
• Comes with a self-cleaning dirt arrestor screen to prevent future drain clogging.
• Ergonomic grip for easy use that is comfortable and slip-free.
• Includes patented backflow check designed to prevent contamination of water.
• Broad dispensing pad meant to protect against penetration of roots and soil.
• Both main and lateral line application.
• 1" MPT x 1" INS.