How to Install an In Line Vent in a Kitchen Sink Home Guides. A kitchen sink that does not drain properly may benefit from an in line vent. Plumbing drains require proper venting, typically through pipes that extend to the roof to allow air into the drain lines to equalize the pressure and allow gray water to drain. In some cases, such as a kitchen sink that was improperly vented when first installed, running a new vent line to the roof may not be feasible. For such instances, you can install an in line vent in a kitchen sink using a one way valve, known as a mini vent, that allows air into the line but not back out. Clean out the cabinet beneath the kitchen sink. Place a towel directly beneath the drain line. Loosen the couplers and remove the P trap and tailpiece from the sink drain line. Cut a 3 inch section of 1 12 inch PVC pipe, using a PVC cutter or a hacksaw. Apply PVC primer to one end of the 3 inch section and to the inside of the drain coupler in the wall beneath the sink. How To Install Studor Vent System' title='How To Install Studor Vent System' />Apply PVC glue around the primed portion of the 3 inch piece and insert it halfway into the coupler. Prime the exposed stub of the installed 3 inch piece of PVC as well as the lower coupler of a 1 12 inch wye connector. Place the PVC around the stub and attach the wye to the stub. Q2. What is new about the Studor AAV In the past, open vent piping was the only answer to maintaining pressure control and trap seals the pipes extended. In modern plumbing, a drainwastevent or DWV is part of a system that removes sewage and greywater from a building, and regulates air pressure in the wastesystem. Ensure the lead in coupler of the wye is pointing upward toward the sink basin. Measure the distance between the wye lead in coupler and the bottom of the sink. Subtract 4 inches from this distance. Cut a section of 1 12 inch PVC to that length. Prime and connect a 1 12 inch threaded female PVC coupler to one end of this section of PVC. Thread a mini vent into the threaded female coupler and tighten the vent to the coupler as firmly as possible, using your hand. Prime the opposite end of the section of PVC to which the vent is attached, as well as the top coupler of the wye beneath the sink. Apply glue to the end of the primed section of PVC and install this vent tube into the coupler on top of the wye. How To Install Script Hook V For Gta 5 Xbox 360. Thread the sink tailpiece to the bottom of the sink and hand tighten the coupler. Dry fit the sink trap between the bottom end of the tailpiece and the open end of the wye connector. Cut the trap tube so that the trap fits properly between the tailpiece and the wye. Connect the tube between the tailpiece and the wye by tightening the couplers. Turn on the faucet and drain water through the sink drain while watching for leaks anywhere in the drain line beneath the sink. How To Install Studor Vent System' title='How To Install Studor Vent System' />Remove the towel and replace the contents of the sink cabinet. Things You Will Need. Towel. PVC pipe, 1 12 inch. PVC cutter or hacksaw. PVC primer. PVC glue. Wye connector, 1 12 inch. Tape measure. Threaded female PVC coupler, 1 12 inch. Mini vent, 1 12 inch. P trap, 1 12 inch. Because the water line was accidentally not run to my island in my new home, my plumber will use the line that was for the vent for the water line. Then he said he. Drain tailpiece, 1 12 inch. Tip. A mini vent can help with eliminating the smell of sewer gases in the kitchen, as it will allow air into the drain but not allow a back flow of gases through the valve. About the Author. Chris Baylor has been writing about various topics, focusing primarily on woodworking, since 2. You can see his work in publications such as Consumers Digest, where he wrote the 2. Best Buys for Power Tools and the 2. Best Buys for Pressure Washers. Photo Credits. David SacksLifesizeGetty Images. Name of Association School of Plumbing Limited Address Adeyemi Olukoya Ogunsanya, P. O. Box 1466 Federal secretariat Area 1 Garki, Abuja Nigeria Phone. Martins Ten Rules of Roof Design For the best performance, build a simple roof shape over a vented unconditioned attic.