BS EN 1111:2017

What is BS EN 1111-Sanitary tapware- Thermostatic mixing valves (PN 10) about?

BS EN 1111 discusses sanitary tapware. BS EN 1111 specifies general construction, performance, and material requirements for PN 10 thermostatic mixing valves (TMV) and includes test methods for the verification of mixed water temperature performance at the point of use below 45 °C.

BS EN 1111 applies to valves intended for use on sanitary appliances in kitchens, washrooms (incl. all rooms with sanitary tapware, e.g., toilets and cloakrooms), and bathrooms operating under specified conditions.

BS EN 1111 allows TMVs to supply a single outlet or a small number of outlets in a “domestic” application (e.g., one valve controlling a shower, bath, basin, and/or bidet), excluding valves specifically designed for supplying a large number of outlets (i.e., for institutional use).

The tests described are type tests (laboratory tests) and not quality control tests carried out during manufacture.

Who is BS EN 1111-Sanitary tapware- Thermostatic mixing valves (PN 10)  for?

BS EN 1111 on sanitary tapware (thermostatic mixing valves (PN 10)) is useful for:

• Sanitaryware manufacturers
• Inspection personnel

Why should you use BS EN 1111-Sanitary tapware- Thermostatic mixing valves (PN 10)?

When PN 10 thermostatic mixing valves (TMV) are used to provide anti-scald protection for children, elderly, and disabled persons the mixed water temperature needs to be set at a suitable bathing temperature (body temperature approximately 38 °C) as children are at risk of scalding at lower temperatures than adults. This does not obviate the need for supervision of young children during bathing.

BS EN 1111 provides you with general construction, performance, and material requirements for PN 10 thermostatic mixing valves (TMV) and includes test methods for the verification of mixed water temperature performance at the point of use below 45 °C. This does not exclude the selection of higher temperatures where available.

BS EN 1111 helps you manufacture sanitary tapware with thermostatic mixing valves (PN 10) that meets the requirements of this technical standard and gives your customer a better user experience.

What’s changed since the last update?

BS EN 1111:2017 supersedes BS EN 1111:1999, which is withdrawn. BS EN 1111:2017 includes some technical changes with respect to BS EN 1111:1999. These include:

• The introduction of Clause 10 on backflow protection
• The introduction of Clause 11 on test sequence
• The introduction of Clause 13 on performance
• The update of chapters on pressure resistance, torsional resistance and mechanical resistance; new Annexes A, B, C, and D