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2. Trap (plumbing) - Wikipedia

   en.wikipedia.org/wiki/Trap_(plumbing)

   Trap with copper drain pipe at underside of firestop packing in two-hour fire-resistance rated concrete floor slab Typical P-trap. Maintaining the water seal is critical to trap operation; traps might dry out, and poor venting can suction or blow water out of the traps. This is usually avoided by venting the drain pipes downstream of the trap ...

3. Drain-waste-vent system - Wikipedia

   en.wikipedia.org/wiki/Drain-waste-vent_system

   Generally, a toilet outlet has the shortest trap seal, making it most vulnerable to being emptied by induced siphonage. An additional risk of pressurizing a system ahead of a waste stream is the potential for it to overwhelm a downstream trap and force tainted water into its fixture. Serious hygiene and health consequences can result.

4. Plumbing fixture - Wikipedia

   en.wikipedia.org/wiki/Plumbing_fixture

   If there is a removable strainer device that fits into the fixed strainer, it is termed a strainer basket. The initial pipe that leads from the strainer to the trap is termed the tailpiece. Floor-mounted water closets seal to the toilet flange of the drain pipe by means of a wax ring. These are traditionally made out of beeswax.

5. Closet flange - Wikipedia

   en.wikipedia.org/wiki/Closet_flange

   In plumbing, a closet flange (also known as a toilet flange) is a pipe fitting (specifically, a type of flange) that both mounts a toilet to the floor and connects the closet bend to a drain pipe. The name comes from the term "water closet", the traditional name for a toilet. Closet flanges are typically made of brass, cast iron, ABS, PVC, and ...

6. Floor drain - Wikipedia

   en.wikipedia.org/wiki/Floor_drain

   Floor drain system in bathroom, Korea. A floor drain is a plumbing fixture that is installed in the floor of a structure, mainly designed to remove any standing water near it. They are usually round, but can also be square or rectangular. They usually range from 2 to 12 inches (5.1 to 30.5 cm); most are 4 inches (10 cm) in diameter.

7. Pit latrine - Wikipedia

   en.wikipedia.org/wiki/Pit_latrine

   Whilst a dry toilet can be with or without urine diversion, a pit latrine is almost always without urine diversion. The key characteristic of a pit latrine is the use of a pit, which infiltrates liquids into the ground and acts as a device for storage and very limited treatment. [7] Pit latrines are sometimes also referred to as "dry toilets ...