What is a primer line?

A priming line is a plastic or metal water line that is attached at one end to something that when in use, supplies water to another location. You can make sure that all traps have water in them simply by running the taps for a few moments.

Is trap primer necessary?

Building codes may require trap primers for traps in certain locations or situations, usually those in which industry experience has shown that they are likely to dry out. The most common requirement is for basement floor drains, which are only used when the basement floods.

What is a trap seal primer outlet?

Trap seal primers provide a supply of water to replenish the deep seal or “P” trap of a drain to prevent sewer or potentially explosive methane gas from entering the area through the floor drains.

What is the purpose of a trap primer?

Trap primers are used in plumbing systems to prevent floor drain traps from losing their water seal by evaporation. Maintaining the water seal will prevent the backflow of sewer gas into the buildings or rooms where the traps are installed.

Do floor sinks require trap primers?

All plumbing fixtures, including floor drains, are required to have traps. For a water-supply-fed type trap primer, this happens automatically, based upon a water pressure drop when there is flow within the potable water piping system, such as using a sink faucet, flushing a toilet, etc.

Where would a trap primer best be installed?

The trap primer valve should be installed vertically at least twelve (12) inches [305mm] above the grid of a floor drain, or the flood rim of the equipment which the trap is to serve.

Do floor sinks need trap primers?

Are trap primers pressurized?

23. 3.2 Procedure The device trap primer seal shall be installed per manufacturer’s instructions. A water supply shall be connected to the inlet of the device and shall be pressurized to 345 kPa (50 psi) 50.0 psi (345 kPa).

What is code for P trap?

Each “P” trap shall have a water seal of not less than 2 inches and not more than 4 inches and shall be set true to its seal. (6) Size. Traps shall be not less than 1 1/4 inches in diameter. A trap shall not be larger than the waste pipe to which it is connected.

Is there a trick to connect primer tubing to non-laundry?

The previous owner of my house didn’t know what the trap primer tubing was when he installed an expensive kitchen faucet and stainless sink in the laundry room, so left the tubing dangling. Is there a trick to connect it without replacing the faucet?

Where can I get primer for my faucet?

A traditional style laundry faucet with primer tube attached to the faucet body. The most common water source for the primer system is the laundry tub faucet. At the underside of the traditional laundry faucet body is a fitting to which a tube can be attached.

When to use trap primer on laundry tub?

If there is no laundry tub, or if the laundry faucet is not a traditional laundry faucet then it is important to confirm presence of a trap primer system. Sometimes its hard to find them. In a new house, ask the builder to identify the primer location if you can’t find it.

Where does the primer come from in a toilet?

The water you see in the toilet bowl is acting as the trap seal. Floor drains do not receive water on a regular basis, so they are at risk of drying out. A traditional style laundry faucet with primer tube attached to the faucet body. The most common water source for the primer system is the laundry tub faucet.