What Is A Grease Trap?

What Is A Grease Trap

In this guide, I will explain what is a grease trap?

Grease Trap is a device used in homes and restaurants (installed in a commercial kitchen) to separate fats oils and grease from the water that would otherwise be flushed down into the sewer system. It is a sort of grease interceptor which stops automatic grease or oils and grease fog and ensures automatic grease removal.

Grease traps typically consist of a long, narrow pipe with one end submerged in flowing water at all times. The other end of the pipe has an open, U-shaped channel that gradually widens as it approaches the surface.

This design ensures that any floating substances (such as oil) will flow down through the liquid rather than float up to its surface, where they can combine with air and congeal into solids like sludge or scum. The opening at this end of the pipe is normally no more than six inches wide, which means any type of grease is unable to escape once they enter.

Installing it will certainly save the service cost of a plumber and also remove the blockages in your sewer pipes besides improving the efficiency and capacity of your kitchen drain.

If you need a grease trap to drain out different types of grease and make your sewer lines better so that free water can easily be pumped, this short guide will help you to understand what it is and how you can install it on your own:

1. What is a grease trap and how does it work

A grease trap is an important piece of machinery that collects and stores oils from your kitchen sink. These traps are often constructed out of a U-shaped pipe, with one end connected to the drain line coming from your kitchen sink.

This allows the oil and other waste materials to flow down into the trap, reducing the amount of grease and fog where it will then be stored until you decide to dispose of it. The purpose of these traps is to prevent sewer gases from entering homes and restaurants by trapping them in this closed system before they can escape outside.

Grease Traps are usually good to prevent sewer water backup because it separates any solids that may have come along with waste products so they don’t make their way into residential plumbing lines or septic tanks.

2. How to install your own grease trap?

To install your own grease trap you have to first find a suitable location. It is important that it be placed in an area where it can catch grease and not block other pipes or appliances with debris from the trap. Usually, this is located near the kitchen sink. It is also very effective when put in areas where there are a lot of greases being used such as showers and dishwashers.

Before you decide on a proper location for your grease trap, keep these things in mind:

  • A properly sized trap will allow water flow without interruptions while trapping any floating solids within the line itself. The pipe should be at least 1″ larger than the diameter of the drain line which it intersects to ensure there will be no clogs because of excessive debris buildup over time and the U-shaped shoulder should be three to four times larger than this diameter as well.

A grease trap is a very easy thing to install if you know what you are doing and follow these steps carefully:

  1. Dig out the ground near your sink and expose the drainpipe of the dishwasher or hand washing facility. If there are multiple lines, make sure that all of them will be going into one grease trap. Using a hacksaw blade, cut off about 2″ from each exposed line so that they sit flush with the soil outside your building. Make sure not to accidentally cut through any water lines before disconnecting them-you can check for this by wrapping duct tape around their ends/rippers and ripping it offafter cut off to ensure no water is coming out from the connections. If you do accidentally cut through a water line, no need to panic-you can usually use a T joint to reconnect them without requiring any special tools or skills.
  2. Take the open end of the grease trap and place it over your exposed rippers so that they are covered by it and pointing downwards into the hole. You may have to angle it slightly for proper coverage depending on how much room you have to work with outside your building. Fill in around where your rippers sit within the hole with enough soil or clay/dirt so that their tips are buried about 4″ deep (the top of each ripper should be visible as well). Make sure everything is even and level before moving on.
  3. Once the rippers are buried, take your grease trap to the sink or shower where you want it placed and unscrew its lid. Place one end of the trap over your drain opening so that it is submerged in water (you can use detachable pipes from your 3-way adapter if this makes things easier). Take some duct tape and secure all three parts together-this will ensure there are no sections exposed or loose which could allow smells or particles to get into other drains leading to outdoor plumbing.
  4. Make sure everything is sealed up well, attach a hose to the outside part of your trap so that you can easily connect/disconnect appliances from it, and then fill in around it with dirt/clay. Now you are free to connect your dishwasher and any other drainage lines which go through the outside of your building!
What Is A Grease Trap

3. How a grease trap can help?

If everything was installed correctly, then this should be looking good at this point. Before you get too proud though, it’s important that you check in on things regularly (at least once every few weeks) due to several reasons:

  1. A restaurant owner or manager would make sure all cooking surfaces inside the kitchen are properly maintained to prevent food and grease from mixing with water and eventually going into sewer systems where they clog pipes and increases sewage treatment costs as well as causing odors for neighborhood residents if not being treated properly.
  2. They also have to ensure that all equipment being used in the kitchen is properly installed and connected to their own grease traps & lines which should be leading outside without any interference from other plumbing. This includes dishwashers, sinks, faucets/sprayers, etc
  3. Some equipment just doesn’t do well when not being hooked up to a grease trap. Mixers or blenders may leave behind raw food particles into drains that lead outside of your building which will eventually end up causing sewage backup once it reaches the city sewer system.
  4. Not only does this cause unnecessary damage to appliances and slow down the digestion process for wastewater treatment plants, but it can also spread harmful bacteria into the environment around us where they can infect humans through water sources we use every day as well as contaminating fresh produce.

4. Why you should have one in your kitchen

One of the key reasons to have grease traps installed in any home is that it prevents grease particles from getting into sewer systems, which are usually too small to properly handle large amounts of solid matter.

Grease traps also help minimize the costs for wastewater treatment companies and grease trap cleaning as well as minimize repair costs for homes or businesses where pipes have been affected by grease buildup over time.

Grease traps make homes safer by greatly reducing the spread of harmful bacteria which could be found in sewer lines and then possibly get into nearby water sources.

They also help reduce bad smells from kitchens or restaurants so that people living near them or going to visit nearby establishments are not forced to smell something disgusting that can ruin their appetite for a full day after just one dish is spoiled during the cooking process!

PRO TIP – If you’re a homeowner planning to install one of these in your residence, without seeking professional services, make sure everything is installed properly and that there are no exposed lines leading outside-this will prevent ground soil from entering directly in between your dishwasher (or other drainage equipment) and its drain line, which could potentially cause problems like clogging or food odors seeping into your indoor air supply (especially if not treated/vacuumed regularly).

5. Things to consider before installing a grease trap

If you are planning to grease traps or grease interceptors you need to consider few things.

The first one is how it affects your sewage disposal cost. If you have already a grease trap in place and want to extend the existing line then check with your local authorities if that is OK.

Some places don’t allow such extension.

Another important thing is that you can not just put any food material into a grease trap, some of them may harden when exposed to freezing temperature which will cause pipe clogs and create trouble for regular customers especially those who live far from the system.

So before putting anything make sure what are the things allowed by your local laws – this rule will apply even to those homeowners who install their own grease traps on property they own or lease!

You need to be careful about several other details as well:

  • The temperature outside matters. You need to make sure you have a grease trap that can work under any temperature, local laws should restrict using this kind of equipment at below 45 degrees Fahrenheit.
  • Make sure your grease trap is able to handle wastage generated by your property comfortably without additional pressure on the sewage system. It may harm other people who share the same sewer line with you or cause problems for neighbors who are directly connected to it in case if they face malfunctions because of water being pushed back up from your drainpipes and lines outside!
  • If you’re not planning to use a diesel-powered pump for cleaning out traps, then remember that there will be several pumping sessions each year so calculate that in! Pumps use a lot of electricity and maybe noisy and cause problems for the entire neighborhood it is placed in
  • 4) Make sure that the grease trap is connected to your sewer system not directly, but through clean-out access so if there is any malfunction or clog you can easily get inside! You will need to do this at least one time per year!
  • There should be an indicator on every grease trap that shows how much liquid has collected inside to avoid having too much pressure build-up and possible explosion from different sources during bad weather conditions.
  • Finally, remember about cleaning. Don’t put food materials into your grease traps which could harden in freezing temperatures or become hardened as a result of heat exposure (like frying meat).
What Is A Grease Trap

Is a grease trap plumbing?

The basic idea of a grease trap is to keep harmful and disgusting materials from entering the sewage system. This is done by trapping these items inside a polyethylene tank that has been fitted right between kitchen equipment and drainage lines – this way, all chemicals, fats, oils, and other hazardous waste products don’t get into the groundwater or septic tanks!

It’s widely used in commercial areas where heavy grease flow can be expected (like burger joints or fast food restaurants), but some people also use them in garages or near drain systems on their properties to catch all kinds of grease related problems before they affect neighbors living next door.

As you see, they are really amazing inventions that help prevent damage to sewer lines under household sinks AND save money on pumping and plumbing costs!

How often do you need to clean a grease trap?

If you want to keep your grease trap in proper working order and reduce maintenance costs, then cleaning it 1-3 times per year is a must. This will make sure the waste is disposed of properly and prevent these same wastes from going back into your home plumbing lines!

Cleaning it regularly can also become an environmental friendly way to reduce wastewater and open the blockages to improve the capacity and avoid sewer overflows.

The job can be done either by yourself or by professionals who are ready to do anything on their own as long as they get paid. If you’re looking for expert help, then look no further than us, we are here to help with any kind of issues that have been caused by improper sewage disposal systems!


A grease trap is a device that separates harmful fats, oils, and other hazardous waste products from the water in sewage lines. They are most commonly used on commercial properties to collect these items before they enter into groundwater or septic tanks nearby. For homeowners wanting to install their own grease traps, there are some things you need to be aware of the things discussed in this post.

References: Grease trap

Noah Burns

I am Noah Burns- The Guy behind mybestsix.com. I love to experiment and test new products to create informative contents for readers like you. I aim to make this site a leading source of information and reviews to help consumers make more informed buying decisions.

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