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I’m installing a Saniflo upflush toilet with shower and vanity connected. The shower trap arm will be shorter than 5 ft., and the pump unit will be vented as required. The folks at Saniflo told me that with trap arms that short, I don't have to individually vent the shower and vanity drain...

Filed under "stuff in my house then doesn't seem right" is this toilet DWV setup. The toilet flange connects to the wye you see, and the line is vented just upstream. Again, the only venting on this line is upstream from all fixtures, including the toilet. You can just barely see the vent...

I’ve installed a new picture window directly in front of my main-line-to-soil-stack connection in the basement. Because of this, I’d like to cut the soil stack down as low as possible while also lowering the main line. I’ll then cover it with a bench or something. Question: Can I replace the...

I have a 13-year-old Vaughn S35TPP indirect water heater (see photo) heated by a Budrerus oil-fired boiler with a Grundfos recirc pump set on high speed. I have the water heater aquastat set to 145° with a 10° differential, and I have a mixing valve set to about 122°. People say an indirect...

Had a minor emergency when I started to drain a full kitchen sink. The waste tee slipped off of the sink tailpiece (see photo) and proceeded to flood the cabinet, floor, and basement. Maybe vibration from the garbage disposal contributed to loosing up the washer over time? There must be a...

I'm installing a basement bathroom with a Saniflo macerating toilet. My main drainage line is 3" PVC running horizontally in the basement. The line is stack vented, continuing to the roof on the upstream side. I plan to connect the 3/4" pumped waste outlet on the toilet into the 3" horizontal...

I’m adding an upper-level, interior laundry room. Thanks to previous guidance here, I’ve plumbed the washer drain downstream of the toilet in the adjacent bathroom, like this. I now need to install a washer drip pan, but because of my interior-wall location and cold climate, instead of direct...

Trying to understand where I can connect a washing machine in a closet that backs up to a bathroom. The 2 inch shower vent runs behind the shower in the closet wall (see photo). I'd love to connect the standpipe to that vent, but I'm guessing that would disrupt the shower trap and vent, right...

I have water baseboard heat, and the wife has had enough of the PEX in the second-story floors popping and ticking as it expands each time there's a call for heat. We’re planning for new carpet, so I think I’ll bite the bullet and replace all the PEX with PEX-AL-PEX by cutting access channels in...

My home is a two-story modular that’s 11 years old and connected to sewer. It seems that when it was built the seven vent stacks installed up to the attic were only stubbed into the attic and never extended through the roof or even tied together. They’re each capped with foil and they mostly...