drum trap การใช้

• If there is no ceiling finish underneath, a trap ( S-shaped P trap or a drum trap ) should be obvious.
• Yes, put the traps back in; they can be P traps ( a bend in the pipe that is the elbow you spoke of ) or drum traps, a modern, efficient trap.
• What you can do is find a competent plumber who can put in any kind of a trap, a P trap ( an " S " bend in the drain pipe ) or a drum trap, probably the better way to go.