S trap

[Michael Carson]

I have a client that is selling his home in another state and moving here. His buyer's inspector called out the S-Trap below. My client wants to know if it is something worth fighting. He writes "my understanding is if they have a trap arm length greater than 2 pipe diameters between the p-trap and vertical limb, then they really aren't S traps. The pipe diameter in the p-trap is 1.5 inches. The length of the trap arm is 3.5 inches. I believe the other inspector is right in that it is an S trap and should be fixed and what the client is talking about is trap arm lengths to vent. I just need some clarification/feedback before I answer.

Thanks.

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[waynesoper]

I agree, not an s trap, that straight section would be long enough to prevent siphoning in my opinion

[randynavarro]

It's not an s-trap but it's still wrong. The vent opening in the wall is below the weir of the trap. It must be above.

Installing a longer tailpiece down from the sink will solve the problem.

[Tom Raymond]

We can't tell from that pic if it is an S or not. The trap arm length references the distance to the vent, so if the arrow in the pic points to a Tee then it is a P trap and Randy is correct, but if it's an Ell then the buyer's HI is correct. Either way it's wrong.

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Your client should be glad they only want the trap fixed. I'd want the hole in the wall repaired as well.

Tom

[Jim Morrison]

Fight what? You should tell your client it's wrong and that he should write his buyer a check for a couple hundred bucks and get on with his life. Let the new buyer hire a real plumber to make it right.

PS. Whenever I see a trap with no cleanout, I just know there's more trouble nearby.

[Michael Carson]

Thanks for the info. I had questioned the the whole thing, I thought I was not seeing something.

[Scottpat]

We must have been looking at the same house!

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[plummen]

It's not an s-trap but it's still wrong. The vent opening in the wall is below the weir of the trap. It must be above.

Installing a longer tailpiece down from the sink will solve the problem.

ditto!