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Anyone know anything about Fluidmaster model 300? I own a home purchased new in 2016 which has three toilets, each of which uses Fluidmaster model 300. Being unable to find a repair kit, I contacted Fluidmaster who responded by indicating that the entire flush valve should be replaced with a...

There is a gurgling sound under my kitchen sink after water goes down the drain. It does not happen all the time and when it does occur, it usually does so after about five minutes. Even though I have never smelled sewer gas, I replaced the AAV anyway thinking it may be defective, but that did...

My vent was clogged with what looks like small plastic chips. I removed the equivalent of about a half gallon. After close examination, I thought that maybe the inside of the PVC pipe was deteriorating. However, where the stack goes through the roof, it looks fine. Anyone have any idea what...

Is there a minimum distance between a main panel and a subpanel? If so, what is it? Also, is it acceptable to feed a subpanel from another subpanel? I have a main panel with a 200 A breaker (no other circuits) that feeds what used to be a main panel (it was converted to a subpanel when I...

I am adding a sink and shower to an existing bathroom. Is it acceptable to feed both from 1/2" copper or do I need to supply separate 1/2" copper feeds from 3/4" copper? If the former, what is the maximum number of fixtures permitted from 1/2" copper?

I am installing a new stall shower that will be directly on the other side of a wall next to an existing stall shower. The drains will be approximately 27" apart. Is it permitted for both drains to use the same trap?

I'm doing remodeling and am looking at a plumbing book which says that the maximum distance to the stack for a two inch drain is five feet. Does that mean the max distance without a vent or, the max distance period? That seems awfully restrictive. I've seen some incredibly long drain lines.

I am doing some remodeling. I currently have two bathtubs, a shower, three toilets and three sinks draining to one three inch (3.5" O.D.) main pvc drain pipe. I plan to add a shower and a sink. Is this a problem?