100mm 4" Sliding Gate Valve Polypro Paddle Suit PVC DWV Pipe TGVS100 is a manual operated Sliding Gate Valve that is most commonly used for isolating water flow for stormwater, dams and other aquaculture applications. The uPVC Sliding Gate Valve Non-Pressure are grey in colour and come complete with PVC Handle and are compatible with PVC DWV or Stormwater Pipe.