What is the purpose of a p-trap for bathtub drain plumbing?
Wednesday, March 24th, 2010 at
12:13 pm
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Is it mainly for clean out, I have run into some problems with floor heights for proper drainage, so if I can just elimate the trap it will help me.
Do not eliminate the P trap. It is in place to hold a small amount of water in the drain pipe. That small amount of water keeps sewer gas from flowing into your home. I’m also confident that it is not up to code, regardless of where you live.
it’s so the sewer gas will be trapped in the pipes, ane exit through the roof vent rather than into the house. i wouldn’t eliminate it unless you don’t mind your house smelling like a sewer, and it is against code.
I agree with the previous answer– it prevents sewer gas from rising up thru the pipes into your house
Hi friend,
A P-Trap is for trapping the bad odours from the drainage pit to which the pipe is draining finally into. It is a ‘lying down’ or horizontal P. You can imagine a clock wise 90 degree turn of capital letter-P. The water which gets trapped invariably always (after each use), in the ‘head’ (that U-tube part) of such an arrangement forms an effective sealant preventing all (un pleasant) odours entering in. Thus eliminating a P-trap will end up the bath room smelling foul. May be you can think of some low profile model of P-trap or have it at a distance(even out side the building) before the drain entering into the nearest pit. It is a must to have one.
p traps are inportant because they keep sewer gas from leaking into your house. not only that, but if you drop something important down the drain, the trap will catch it.
the p trap is p-shaped so that water stays in the trap. It acts as a barrier between your house and the bad sewage smells coming from the drain.
Is there room enough to cut the trap off and raise it closer to the bottom of the tub? If not, and you have a long run, perhaps you could build a soffit to house the drain pipe.
Remember, you only need 1/4" slope per foot of drain pipe for proper flow. Knowing that, with 8" joists you should be able to make a run of about 28 feet.
methane( sewer gas) can be explosive. Since a toilet has it’s own built in p trap a toilet should never be removed without plugging the hole. Same with a bathtub or any waste line. If you really don’t have room for a trap Mabey a sewage pump would work. It allows black and grey waste water to be sent to a level below the sewer outlet and then pumped back up to the sewer outlet. They sell for 300$+