Click on the questions featured below to reveal the answers.

Q1. What does “AII rated in accordance with EN12380” mean?

AII means that the AAV may be installed below the flood level of the appliance, in a temperature range of 0°C to +60°C. More information about EN12380 can be found on Studor’s website.

Q2. What is Active Control?

Active Control is the concept of proactively balancing the pressure fluctuations within the drainage system by reacting at the Point of Need – this is where a pressure differential occurs. The Handi-Vent 4 will protect against negative pressure. To handle positive pressure the Studor P.A.P.A. is required – for more information on this, visit Studor’s website.

Q3. Can the Handi-Vent 4 be installed outside?

No. The Handi-Vent 4 is for internal installation only. If you have the need for an external AAV you should install the OsmaVent 110 (Maxi-Vent), together with the Aluminium Cover for added protection.

Q4. Can the Handi-Vent 4 be installed in medium rise buildings?

The Handi-Vent 4 is designed to ventilation low rise building stacks (up to 3 floors). For buildings higher than this, other AAVs manufactured by Studor should be installed for stack venting (OsmaVent 110 (Maxi-Vent)), and branch venting (OsmaVent 40 (Mini-Vent)). For more information, visit Studor’s website.

Other typical questions are listed below. Answers can be found on the Studor website:

Q1. Why is it important to allow air circulation in a building’s plumbing or drainage system?

Q2. What is “new” about the Studor AAV?

Q3. How new is this technology, is it effective, and who is it used by?

Q4. Do Studor AAVs fit all applications?

Q5. Are Studor AAVs durable?

Q6. Can Studor AAVs be used in extreme temperature conditions?

Q7. Where can the Studor AAVs be installed?

Q8. Is an open vent pipe still required?

Q9. Do the Studor AAVs need to be maintained or replaced after a certain time?

Q10. What is a positive pressure?