BS 7357:1990

What is BS 7357 - 7.5 L WC flushing cistern specifications about?

Adequate performance of sanitary systems is vital in maintaining cleanliness and hygiene and preventing outbreak of diseases.

BS 7357 is a British Standard that discusses sanitary installations.

BS 7357 specifies requirements for 7.5 L maximum single flush, exposed and concealed WC flushing cisterns with a side inlet or bottom inlet supplied with a float operated valve, a valveless siphon for high level, low level, and close coupled applications together with the necessary flush pipes.

Information to be supplied by the purchaser at the time of enquiry and/or order is listed in Appendix A.

Note: Requirements for float operated valve assemblies and methods of fixing cisterns are not specified in BS 7357.

Who is BS 7357 - 7.5 L WC flushing cistern specifications for? 

BS 7357 on 7.5 L WC flushing cistern specifications is relevant to: 

• 5 L WC flushing cistern and component manufacturers
• Sanitaryware manufacturers
• Product designers and specifiers
• Sanitation departments
• Quality control personnel

Why should you use BS 7357 - 7.5 L WC flushing cistern specifications?

For WC flushing cisterns to be reliable and safe to use, it is necessary that they comply with best industry specifications for optimal performance.

BS 7357 provides general requirements for the production of WC flushing cisterns.

BS 7357 also discusses the requirements of materials, for adequate protection of components against corrosion, along with appropriate guidance on design of cistern shells, flush pipes and the construction of the shell and flush pipe connections. Best industry operating mechanism is also covered in BS 7357.

BS 7357 also provides a range of test methods, compliance to which demonstrate whether your 7.5 L WC flushing cisterns are fit for purpose.

Thus, BS 7357 can ensure the 7.5 L WC flushing cisterns are effective at the point of use.