Floor Trap Drain Pipe

Because the floor drain connects to the sewer system sewer gas can drift up the pipe and enter your home through the drain.

Floor trap drain pipe.

Once the square piece has been removed cut the drain off with a saw right after the p trap. A dry floor waste consists of a flush floor grating with a pipe that discharges either directly to the outside or over a gully trap see figure 5. The drain must connect to a trap that blocks the gas by catching water in a curving section of pipe creating an airtight barrier. A gully trap is provided at the junction of a drain carrying sullage from baths kitchens wash basins etc and the drains carrying rain water from roofs and courtyards as well as room washings.

Floor wastes are installed to provide drainage for accidental water spillage and a dry floor waste does not have a water trap. A form of floor trap commonly used in practice is known as nahni trap. You can throw this piece away. If your floor drain connects to the sewer system and you smell sewer gasses the trap beneath the drain is dry or the plug for the cleanout is missing.

If the drain is in the floor you may have to swivel the. When attaching your new p trap to the end of the pipe you may need to use a reducer if the pipe coming up from your shower floor is a different dimension than your new p trap and your drain. To ensure water will drain properly and won t back up in the line a good rule of thumb to follow when installing pipe is a drop of 1 4 inch per foot. The drainpipes that connect to floor drains must have a minimum vent size of 1 1 2 inches.

The floor trap has a small water seal. Traps might dry out and poor venting can suction or blow water out of the traps. The trap inlet connects to the drain tailpiece which is the pipe that extends down from the sink and the outlet connects to the drain. Trap with copper drain pipe at underside of firestop packing in 2 hour fire resistance rated concrete floor slab typical p trap maintaining the water seal is critical to trap operation.