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Sewage ejector pumps occupy a totally separate section of the code and the restrictions are firm. The only exception to this rule is in the case of certain fixtures such as dedicated up-flush toilets that have a built in sewage ejector system. Unfortunately the answer to both of your questions is "No".Īll fixture discharging into a sewage ejector receptor Must Be vented in the usual manner as defined for DWV applications prior to discharging into the receiver. If I connect the ejector vent to the existing 1.5 inch dishwasher vent, will this work? Installing a dedicated 2 inch vent is not practicle at this time, but will become possible in a few years when the kitchen above is remodeled. However, the sewage ejector pit is equiped with a two inch vent. I would like to tie the shower vent into the existing 1.5 inch copper vent. Can I do this, or do I need to tie it into the 4 inch cast iron house drain? I would like to connect the sewage ejector drain line disharge into the vertical 2 inch copper drain. Can I increase the drain line to 3 inches (or 4 inches) immediately after the shower trap to eliminate the need for a seperate vent on the shower drain? I understand that a 2 inch drain of this length will need to be vented. The new shower drain will be 2 inch PVC and is about 10 feet from where the drain will discharge to the ejector pit. I assume that the 1.5 inch dishwasher vent connects to the 2 inch sink vent in the wall above the rim elevation of the sink. Both the 2 inch drain and the 1.5 inch vent have horizontal runs about two feet long before they turn vertical again and disappear up into the ceiling along an outside wall to serve the kitchen sink. ![]() The diswasher drain is served by a 1.5 inch copper vent. The dishwasher has its own 1.5 inch copper drain that ties into the 2 inch main drain immediately below where the 2 inch drain turns from vertical to horizontal. Where the main house drain exits the house, there is an existing 4 inch cast iron "wye" (on its back) that is connected to a vertical 2 inch copper drain that serves the kitchen fixtures located above(kitchen sink w/ disposal, and dishwasher). Judging from the vents protruding through the roof, the bathrooms (which are stacked) are served by a 4 inch vent, and the kitchen is served by a separate 2 inch vent. #BASEMENT BATHROOM SEWAGE EJECTOR PUMP INSTALLATION DIAGRAM FULL#The main house drain is cast iron and serves two full baths and a kitchen. The main house drain (4 inch) exits the house through the wall about 18 inches above the floor, so I will be installing a sewage ejector pump. The shower will be a tile shower installed over the concrete floor (actually, the shower floor will be recessed several inches below the concrete floor). I strongly dislike showering in a tub, so I am putting in a basement shower. ![]()
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