P-trap operational limits ??

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by SH140, May 28, 2013.

  1. SH140

    SH140 New Member

    Jan 31, 2013
    Vallejo, Ca.
    Getting ready to install plumbing for new tub install, and wanted to know ahead of time if there are any limitations when installing the p-trap. I know that the standard trap is a fairly tight radius. If need be, could a trap be made with two 90o elbows with a straight connecting pipe at the bottom ? if so how long can connecting pipe be so that the trap still functions correctly? (1", 3", 12" ???) If not, is it because the trap operates more efficiently with a tight turn in a shorter length?

    Also, where there will be no access to the plumbing after the tub goes in, is it better to use only glued joints in the ABS plumbing?

  2. kreemoweet

    kreemoweet Member

    Sep 7, 2009
    Seattle. WA
    Built-up p-traps are generally made up of a 90 plus street 90. The short bend promotes "scouring", so sediment and deposits are minimized in the bend. The plumbing
    codes REQUIRE no-access drains to be made up of glued (solvent-welded) or other approved joints.
  3. Sponsor

    Sponsor Paid Advertisement

Similar Threads: P-trap operational
Forum Title Date
Plumbing Forum, Professional & DIY Advice Bathroom Sink leak at P-trap Sunday at 8:16 PM
Plumbing Forum, Professional & DIY Advice Leaky P-Trap Tailpiece connection to Drain May 24, 2015
Plumbing Forum, Professional & DIY Advice P-Trap? Is this right? Feb 9, 2015
Plumbing Forum, Professional & DIY Advice Opening up P-trap cleanout plug Jan 26, 2015
Plumbing Forum, Professional & DIY Advice P-Trap for claw foot tub on 2nd flr. Jan 23, 2015

Share This Page