Author Archives: Helen Williams

Can AAVs be installed externally / outside?

A commonly asked question is whether Air Admittance Valves (AAVs) can be installed outside. In the UK Part H of the Building Regulations 2010 (clause 1.33) states that “Air admittance valves should not be used outside buildings…” Reasons for this … Continue reading

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CPD Article: High Rise Drainage Ventilation

The importance of the water trap seal Being the only barrier between the drainage system and the living and/or working space, it is critical that the water trap seal is maintained at all times. This protects the occupants of the building … Continue reading

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CPD Article:
Venting External Drainage Systems with Active Carbon Filters

What is an active carbon filter for drainage? It is a two-way vent that uses active carbon as a filter to absorb the sewer gases (primarily hydrogen sulphide H₂S and methane CH4) which come out of a drainage vent. Due … Continue reading

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CPD Article: Introduction to Air Admittance Valves (AAVs)

Introduction to Air Admittance Valves (AAVs) Whilst there is a growing awareness and knowledge of the ever-increasing risks to health from the drainage system, it is often given little thought – effectively being out of sight and out of mind … Continue reading

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When Art Meets Science…

There are times when different disciplines and arts converge with each other to provide outstanding results – the work of the talented Slovenian-born Dr Vesna Petresin, BSc PhD FRSA is one such example, with a lot of the subjects she … Continue reading

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Studor – the Innovators, not the Imitators!

The foundation for Studor to lead the industry with drainage ventilation technology was laid by Sture Ericson (co-founder of Studor), when he applied for the patent on his first designed Air Admittance Valve (AAV) – the Bjare Valve – in … Continue reading

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World Plumbing Day 2017

march 11, every year… everywhere Plumbing – Vital to Global Health Because Every Day is World Plumbing Day Yes, another year has gone by since the last World Plumbing Day (WPD), and here we are again with the opportunity to … Continue reading

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Rock and roll at Studor’s “Seeing is Believing” test tower

Tony Hill (our Technical Sales Engineer) shares with us his slightly hairy most recent experience at our “seeing is believing” test rig in the UK’s National Lift Tower:   If you’re hoping to read about The Rolling Stones or The Who … Continue reading

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From novice to drainage ventilation specialist: Michael Chang

In this blog we bring you something a little bit more personal from our Product Engineer, Michael Chang, who has been a member of the Studor team for over 12 years: I was a vehicle apprentice technician in Hong Kong … Continue reading

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Why the CE Mark alone is not enough…

Studor has remained a pioneer of standards and approvals for drainage ventilation products since being founded in 1975. When European Standard EN12380 was introduced for Air Admittance Valves (AAVs) in drainage systems in 2002, it was natural for Studor to … Continue reading

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