2/9/2024 0 Comments Wet vent plumbing diagram![]() ![]() You can also just use one 3x2 wye and then 2x11/2x11/2 wye (flat still) to catch tub and lav. Simple,easy,done Use 3x2 if tub drain is more then 6. An accessible cleanout shall be installed in the vertical portion of the foot vent. Michaelcookplum said: Dont roll wye on wet vent, run 3' towards toilet and leave off 3x11/2 wye for tub, then 3x11/2 wye for lav, then 90 up to flange. Wet venting is a plumbing term and is a method of protecting the trap on a drain pipe on multiple plumbing fixtures. The island sink drain, upstream of the returned vent, shall serve no other fixtures. Pipe sizing shall be as elsewhere required in this code. The return bend used under the drainboard shall be a one-piece fitting or an assembly of a 45 degree (0.79 rad), a 90 degree (1.57 rad), and a 45 degree (0.79 rad) elbow in the order named. The air for venting the fixtures circulates in the top half of the horizontal branch drain pipe. The principle of circuit venting is that the flow of drainage never exceeds a half-full flow condition. Ive done it for years on many systems, even. This wet venting is permitted by most codes. The DWV Fittings Used To Plumb This Bathroom (based on code) 2. Drainage fittings shall be used on the vent below the floor level, and a slope of not less than 1/ 4 inch per foot (20.8 mm/m) back to the drain shall be maintained. The venting method has long been recognized by the plumbing community and is included in the American Society of Plumbing Engineers Data Book. Washing Machine Drain Vent - 2-inch pipe for washing machine drain. The return vent shall be connected to the horizontal drain through a wye- branch fitting and shall, in addition, be provided with a foot vent taken off the vertical fixture vent by means of a wye branch immediately below the floor and extending to the nearest partition and then through the roof to the open air, or shall be permitted to be connected to other vents at a point not less than 6 inches (152 mm) above the flood-level rim of the fixtures served. Traps for island sinks and similar equipment shall be roughed in above the floor and shall be permitted to be vented by extending the vent as high as possible, but not less than the drainboard height and then returning it downward and connecting it to the horizontal sink drain immediately downstream from the vertical fixture drain. Each wet-vented fixture drain shall connect independently to the horizontal wet vent. units, are connected to the wet vent or a wet-vented water closet trap arm, g) the hydraulic load of separately vented fixtures that drain into the wet vent are.
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