The reason to form a long radius bend to insure the waste is directed in the downstream direction as it enters the horizontal run. In respect to this, can I use a sanitary tee for a vent? The sani-tee will be used to transition from horizontal to verticle and not drop enough that the vent will be lost on the horizontal line. If a wye would be better, would two 45's below it work to safely shift the pip away from the stud? A sanitary tee cannot be laid on its back, horizontally: It is shaped differently than the wye and should only be aligned vertically, or it may block up. When a trap connects to a vertical drain, install a tee fitting. Connecting a trap to a vertical drain with a wye fitting and a 45-degree elbow seems like a good idea. Although a horizontal-to-vertical use of a sanitary tee under a kitchen sink (as shown below) is a less likely to … In some cases, a sanitary tee is used in place of a vent tee for plumbing vent lines—then, the branch sweeps upward instead. A 45-degree wye fitting, double combo, combination wye and one-eighth bend branches, or other approved equivalent configuration is also correct. Splitter Wye: These are going to provide optimal air flow if it is the final, or only, Y branch in the run. wye vs. sanitary-tee. Sanitary tee. Terry Love's DIY Forums: Sanitary Tee vs. 90 Wye vs. Vent Tee Tips You can empty a pair of fixtures, such as two nearby sinks, into a common drain using a sanitary cross. The wye will be used to join 2 lines into one on a hrizontal run so the flow combines flowing in the same direction without causing flow reversal which can lead to clogs. The fitting resembles a normal tee fitting; the sanitary tee, however, when viewed from the side will have a definite downward sweep to the center inlet. Sanitary tee. A sanitary combo is a combination Wye & 1/8 bend already made in one fitting. Discussion in 'Plumbing Forum, Professional & DIY Advice' started by SuperDaddy, Apr 2, 2008. 3. It is vertical, so my understanding is a sanitary tee is allowed. A standard wye is a Y-shaped fitting which allows one pipe to be joined to another at a 45° angle. Or should a san-tee be used? 4. There is a stud directly next to this vertical section of pipe so a sanitry tee might be easiest without shifting the veritcal pipe over a smidge. Wye (Y) or tee-wye (TY) A fitting with three openings, a wye joins (or creates) branch lines. Can a 4x4x2 Wye fitting be used on a horizontal section of a 4" drain waste to tie-in a 2" tub drain? SuperDaddy New Member. A sanitary tee is a plumbing fixture that allows liquids to drain while also allowing the plumbing system to vent. Also the right angle of the Tee Wye makes it easier to attach hoses to and can be great for tight spaces. Installing a sanitary Tee instead of wye or long sweep for drainage connection or back to back fittings (sinks) not directional {UPC 701.2.3} {UPC 704.1,704.2, 706.0} Sanitary tees may only be used on drainage piping when transitioning from horizontal (1/4” per foot) to vertical. Double sanitary tee vs double combination wye, back to back toilets. It is a waste-fitting tee in which the side inlet pipe enters at a 45° angle. Joined: Mar 25, 2008 Location: New York. ... My question is, wye is a sanitary tee directional? A “sanitary tee” gives the waste arm a slight downward slope, enough for good flow, but not enough to create a siphon. Using a regular wye branch (above) for exhausting creates extra friction. A sanitary tee should be used when connecting a horizontal run, such as a waste arm to a vent stack or vertical riser. Discussion in 'Toilet Forum discussions' started by Jfknz, Dec 22 ... 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