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Trap Primers For Floor Drains

What Is A Trap Primer

Repairing the Trap Primer for a Floor Drain in Restroom

Why do you need to know what a trap primer isor for that matter, what a trap is? Because homes, plumbing systems, electric systems, and even the ground can do weird things. Such as emitting a rotten odor you cant ignore.

When that happens, its quite possibly due to sewer gas coming into your home from your floor drain. To keep that gas out, your drain requires a trap, and that trap needs a trap primer.

Why Do You Need A Trap Primer

When a fixture isnt used for several days , the water in the trap evaporates, and air from the drainage system displaces it. This allows sewer gases to enter building through the drains. When someone uses or flushes the fixture, it replenishes the water in the trap and prevents further gas entry.

Besides, plumbing codes require trap primers for emergency floor drains and other evaporation-prone traps. Trap primers must meet ASSE 1044 or ASSE 1018 standards.

Hydrotek International provides trap primer assemblies for traps with integrated backflow prevention and a full range of valves for all kinds of plumbing applications.

We manufacture trap valves at our own production facilities using state-of-the-art equipment and high-quality management processes.

Trap Primer Water Consumption

Water-saving toilets, faucets, and other plumbing fittings have become standard in the last decade. However, waterless or floor drain trap primers will be the next plateau for water conservation for plumbers.

According to estimates, only 30% of trap valve installations are currently waterless. However, when more geographical areas are affected by drought or government water rationing, this figure is likely to rise.

A trap primer that is water-supplied uses 4-8 oz of water at a time. But when you factor in evaporation and if there are many outlets in a commercial building, the water consumption can quickly rise from ounces to gallons every hour.

Regular maintenance is one drawback of water-supplied T-primers and installation and water use costs. Water-supplied traps might clog because of calcification and other scaling phenomena, depending on the minerals in a particular areas water supply.

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Different Types Of Trap Primers

  • Most simple method. Used most often with a floor drain trap is a quick connection from a sink thats closely located. When the sink is used, some of the water goes to the trap.
  • Most common method. The primer connects to a drinkable water supply. When pressure per square inch is sensed such as from a nearby toilet or sink it adds some of that water flow to the trap.
  • Other methods. Some trap primers work on timers . While others create plumbing devices has has a built-in trap primer. And there are other types as well.

What Is A Trap Primer And Why Do We Need It

Factory Direct Plumbing Supply

Just like the trap, a trap primer is relatively simple to understand. Its a device that adds water to your plumbing trap. Thats it. And heres why you need it.

If liquid doesnt go down your drain often enough, the liquid seal the water at the bottom of the U-shaped trap will eventually evaporate. With the seal gone, sewer gas is now able to get through the drain pipe and into your home. Thats a serious problem, and can lead to a plumbing emergency .

A trap primer is a good idea for all of your plumbing fixtures. But dont hesitate installing them on any plumbing fixtures that arent being used regularly. This could be an extra bathroom sink, shower and toilet or perhaps in a vacation home you only visit once or twice a year.

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Is Sewer Gas Harmful

Sewer gas is not usually harmful in smaller doses. But sewer gas can be harmful over time, with prolonged, heavier doses, if the problem isnt resolved. The primary gas in sewer gas is hydrogen sulfide. More so, studies have shown that large amounts are toxic to our oxygen systems, with the potential to damage organs and, in rarer circumstances, even cause death.

If you notice that there is an unpleasant odor coming from areas of your home where there are floor drains, you may want to check to make sure you dont have a dry trap and do have a functioning trap primer.

Manual Vacuum Trap Primers

Manual primers serve in applications where condensate discharge may be infrequent or sparse. A manual vacuum trap primer requires no external power source, and the user activates it by simply pulling a handle or turning a valve. Following activation, the vacuum trap primer exhausts air from the trap body, causing any condensate inside to expel. This type of vacuum trap primer is ideal for water traps because it can help to resist backflow pressure.

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What Is The Purpose Of A Trap Primer

A trap primer is installed on the floor drain trap to maintain water in the trap. This is necessary because drains are vented, and the vent allows air into and water out of the drain. The water in the trap provides a seal against sewer gas entering the building through the drain.

If there is no trap primer or it stops working, then when water is drained from the trap, it will not be replaced by fresh water as fast as it leaves. Eventually, all the water will leave, and sewer gas will enter.

The purpose of a trap primer is to prevent this from happening. A trap primer adds water to a floor drain when it senses too little.

Installation Of Trap Seal Primers

Green Drain Waterless Trap Seal for Floor Drains – Easy-to-Install Trap Primer Alternative

The installation of a trap seal primer begins when the rough in plumbing is installed, as the tubing running to the floor drain must be protected and hidden from view. A proper floor drain must also be installed that comes with a manufactured female threaded inlet, to allow for a water tight connection to the trap seal primers discharge tube. After the water lines are installed the trap seal primer is installed on a cold water line that serves a commonly used fixture and is connected on the outlet, to the tubing running to the trap.

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How Does A Plumbing Trap Work

All plumbing fixtures in a home have floor drains. The floor drains allow water to flow from your house and into a citys sewer or storm drains. This keeps your floors dry and safe from water damage.

More so, each plumbing fixture from kitchen sinks to toilets to showers to water heaters and more is required to have a plumbing trap. The traps stop smelly sewer gases from coming up from the floor drain and into your home. However, in order for these plumbing traps to work by trapping out the sewer gas emissions water needs to drain into them to create a liquid seal.

Put another way, heres whats happening. Water is trapped at the bottom of the U-shaped P Trap. This trapped water creates a seal in your pipe, which prevents any sewer gas from coming up through the drain and into your home. Sewer gas cant get past the seal of water at the bottom of the U-shaped trap. Its a simple but brilliant solution.

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