FloPlast AV32 32mm Air Admittance Valve-Compression, White

Product Information

Cut a piece of pipe to length, clean any burrs off, apply some solvent weld and then push it into the T-piece and ensure it’s vertically upright. With this in mind, as this does happen, it’s essential that your valve is placed in a location that can be easily accessed.

As good and useful as air admittance valves can be they can also cause some problems, especially when they become old and worn. The air admittance valve (AAV), or Durgo valve as it’s also known helps to regulate the air pressure inside waste pipework and soil pipes, stop any smelly gas from escaping and also ensure solid waste is allowed to drain away to the main drain correctly. Once tested and all well, apply a good coating of solvent weld adhesive to the inside of each collar at each end of the T-piece and then a coating around the cut end of each pipe for about 20mm and then push it on to one end of the pipes and wiggle the other end in, pushing both sections right up to the base of each collar. See the solvent weld project mentioned above for any additional help.To make the cut, you may find it easier to remove the entire section of pipework from its current location and do the cutting somewhere with a bit more space. This will ensure your cuts will be much straighter, however if all the fittings are solvent welded this isn’t easy as you will still have to cut the section of pipe out and then use straight couplings or joiners either end to refit it once complete. You can, but it’ll need to be the right one. Most air admittance valves are designed only for use inside, so if you’re planning on doing this you will need to buy one that is suitable for external use. The only real reason for doing this would be if there was nowhere suitable to vent the pipe in the usual way, such as as mentioned previously, too close to a window, or not able to get above roof level. As I said before an open vent must be installed more than 3 meters away from a window and this is not always possible. In this scenario you could use an AAV that is rated for external use, as these can be placed close to the window as they will not allow escape of foul smelling gasses.

Universal Waste Pipe Air Admittance Valves: These valves are adaptable to all sizes of waste pipes and are suitable for most residential and commercial applications. Durgo Valves, commonly known as Air Admittance Valves (AAVs), are critical components in modern waste plumbing systems. They are designed to allow air to enter the plumbing system when negative pressure is sensed, preventing the loss of water seals in traps which can lead to unpleasant odours and unhygienic conditions. Practical Uses of Durgo Valves How high should you install the air admittance valve? The short answer is a minimum of 200mm above any water entry point. So if you imagine your soil pipe run, then durgo valve / AAV must be fitted above the highest connection to the soil pipe from any sink, bath or toilet that is connected to it. Usually you’ll find the installed at the very end of the soil pipe. If you need to, you can install them in line using a soil pipe junction. Adjust the spare top inlet using a spirit level so that it is pointing directly upwards so when the vertical pipe is fitted it is upright and square. Once you have found the ideal install location the next task is to cut the existing waste pipe so that you can fit a T-piece or equal-T as it’s known to run the vertical pipe to fit your AAV.When they aren’t, to fix any issues that arise, a handy product called an Air Admittance Valve is used, find out all about them and how they are used below. What is the Purpose of an Air Admittance Valve?