It's been practiced since the first plumbing code was established.
Get How To Vent A Toilet Sink And Shower
Images. However, the sink is placed further away. However, it is important to note that the vent and waste lay out should only be designed by a qualified plumber.
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Before doing any plumbing work, turn off the water at the main water supply or at local service valves. Also, notice the bathroom sink's individual vent tee's right into the toilet's individual vent. The old sink was plumbed into the vent sideways and the vent terminates under the floor directly into the toilet waste pipe.
Remove the old drain piping.
Since you want to install it to vent the toilet, the best solution is to attach the system to the toilet drain. How to vent a shower drain diagram. For the tub and shower, you can also use a 1 1/2″ pipe to tie into the same 1 1/2″ pipe in the attic that supplies the sink and the toilet. Also, notice the bathroom sink's individual vent tee's right into the toilet's individual vent.
