Category Archives: Standards

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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World Standards Day: 14 October

14 October, every year since 1998 Standards – Essential to providing a protective framework World Standards Day is celebrated by members of the IEC, ISO and ITU as a way of recognising the “collaborative efforts of the thousands of experts worldwide who develop the voluntary technical … Continue reading

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Approvals for the P.A.P.A. (Positive Air Pressure Attenuator)

The Studor P.A.P.A. was first brought to the market by Studor in 2003. It had been invented by the late Professor John A. Swaffield and Dr David Campbell of Heriot-Watt University in Edinburgh, to resolve the problems of positive pressures … Continue reading

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Branch Connections & AAVs

Why Group Venting Capacity Matters The benefits of Air Admittance Valves (AAVs) for group / branch venting is worth explaining further. Typically a drainage system in a building is made up of vertical pipes (stacks) and horizontal pipes (branches). These … Continue reading

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Safety and Design

Do you manage the risks of scalding and burning in your building or business? If so, have you considered the risk of scalding from hot water passing through the water trap beneath the sink? The UK Health and Safety Executive (HSE) states … Continue reading

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Below Flood Level

As most people are aware, the flood level of a fixture (such as a wash basin) is the level at which water will begin to overflow – this could be various reasons, including a blockage in the pipe, or quite … Continue reading

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The Only Line of Defence

Why the quality of AAVs must be high The water trap seal is the only barrier between the drainage system and the living and/or working space; it is therefore essential that this is maintained at all times. The loss of a … Continue reading

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