How to Install a Studor Vent for a Kitchen Sink?

How to Install a Studor Vent for a Kitchen Sink

If you want to know how to install a studor vent for a kitchen sink, I will explain to you in this post so let’s go:

Why you need an Air Admittance Valve? 

Are you tired of sewer gases stinking up your apartment? Or perhaps your sink is draining slowly despite having no clogs? Well, simply include an Air Admittance Valve in your drain system to create a vent that will keep your drain flowing properly. 

During heavy water usage, the pressure inside your drainpipe decreases. Because of this negative pressure, a vacuum develops as the water drains. Additionally, water gets sucked out of the drain trap and results in fewer gases entering your house and causing it to smell. Traditionally, the drain lines of a sink extend horizontally backwards into a sanitary tee. The tee consists of two outlets; one of them extends upwards into a vent system. This venting system allows smelly odors to escape while allowing fresh air to enter into the drain system and help the water drain quickly.

Sometimes, however, it is not feasible to connect drains to external vent systems, as is the case in houses with island sinks that have no overhead cabinetry. As there are no cabinets above the island, finding a route to connect the sink drain to a vent may pose some difficulties.

This is where Air Admittance Valves (also, called auto vents) step in. These valves create a vent by opening up every time the pressure inside the drain decreases due to the flowing water. As they open, they allow fresh air from the room to flow into the drain and equalize the pressure in the pipes. This will prevent a vacuum from forming and hence stop foul smelling gases from leaking out of the drain and into your house. Once the water stops flowing and the pressure inside the drainpipe returns to normal, the valve closes as gravity pulls the sealing washer down. 

How to Install a Studor Vent for a Kitchen Sink

What are Studor Vents?

Studor is a high-end brand specialized in making Air Admittance Valve for kitchen sinks. It offers a variety of exceptional and durable valves based on the size of your drainpipe. Their greater efficiency and low costs makes them the best AAV valve producers in the world. 

How to Install a Studor Vent for a Kitchen Sink?

Installing an Air Admittance valve is quite easy. You will need to install a new sanitary tee that has a short upward extension pipe and then attach the AAV. 

The most common place to install an AAV is under the sink cabinet; at the site of the pipe that joins the drain trap (U shaped portion of the drainpipe) to the branch drain (connects your drainpipe to the main line). However, you need to check your local codes and the manufacturer’s instructions to ensure that you install the unit in an ideal location. 

As sinks and drain vary from building to building, you might need to make a few extra adjustments. However, the general steps are the same for all sinks and drains. 

Follow the steps given below to install a studor vent into your kitchen sink successfully!

Equipment required:

First, get a studor AAV along with the following equipment from any local hardware store:

  • Channel Lock Pliers
  • Bucket
  • Tape Measure
  • PVC pipe cutter
  • Sanitary tee fitting
  • PVC pipe
  • PVC solvent glue
  • Pipe-seal tape
  • Some additional PVC fittings (only if your drain needs them)
  • A new drain trap (optional)


Now that you have all the items that you need to install the vent, you are all set to start the installation process. 

  • The first step is to use the channel-lock pliers to loosen the nuts and remove the drain trap. We recommend keeping a bucket underneath the trap before taking it out to make the process cleaner (the bucket will collect any water present in the trap).
  • Based on the space available to you, plan an arrangement that will allow your drain trap, sanitary tee, pipe extension and air admittance valve to fit underneath the sink. You may need to shorten the trap arm or PVC pipe to make this work. Your main goal is to add a sanitary tee in your existing drain configuration. This will allow for the addition of a vertical pipe extension to which you will attach the AAV. (Tip: Get an AAV that has a bottom edge that is 4 inches above the drain trap’s top.)
  • Check whether everything fits properly by dry fitting the parts together (hold them together without using glue). Place the drain trap bend on the sink tailpiece and insert the drain trap arm into the sanitary tee. Attach the vertical extension to the sanitary tee’s vertical outlet while fixing the horizontal outlet into the branch drain. (Tip: Use a marker to mark the alignments points of the pipes and fittings to help you apply glue to the correct area.) 
  • Now use solvent glue to attach the assembly tightly together. This includes applying glue to the sanitary tee, vertical extension pipe and other pipes that you used to join into the branch drain. After applying the glue, join the pipe pieces to their designated fittings. (The branch drain and vertical pip fit into the sanitary tee outlets.)
  • Install the Air Admittance Valve in the top part of the vertical extension pipe that extends from the tee. 
  • If your AAV has a threaded adapter, first apply glue on the adapter and fit it into the vertical Extension pipe. Then, thread the AAV into the adapter. Also, wrap the pipe seal tape around the AAV’s male threads before screwing it into the adapter. 
  • Put the drainpipe back in its place. Unlike before, you will need to attach the drain trap arm into the sanitary tee instead of the branch drain opening. Then, join the trap arm to the trap bend. Finally, slide the trap bend on the tailpiece. Now tighten all the slip nuts securely into place using pliers. 
  • Finally, check whether all the connections are secure by filling up the sink and draining it while watching the fittings underneath the sink to look for leaks. Tighten any leaking joints with pliers to complete the process.


The installation of a Studor vent is not difficult and can be completed in about an hour. After following the instructions, you will have eliminated your kitchen sink’s most common source of leaks as well as gotten rid of that pesky odor coming from under the cabinet. If you are interested in lowering your utility bills or installing this product for health reasons, we recommend giving it a try!

References : How to Install an Air Admittance Valve to Keep Your Sink Draining Properly

Noah Burns

I am Noah Burns- The Guy behind 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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