3" GATE VALVE (PVC , WHITE, POLYPROPYLENE SLIDE)With these Valterra gate valves you can manually open and close the plastic gate to control air flow. Ideal for controlling and balancing flow from multiple drawpoints. Also available in 2" valves, (P N 79191) and 4" valves P N (79193). Sold in case of 12. 3" Valterra Gate Valve Features: White PVC SLIP x SLIP manually operated valve Plastic (polypropylene) gate For use with 3" PVC pipe For indoor and outdoor installations Damp proof Dynamic loading