What is BS 2456 – Plastics for float operated valves for cold water services about? 
BS 2456 is a European Standard that discusses float operated valves. The main aim of BS 2456 is to ensure the materials used in the manufacture of float operated valves contribute to the optimal performance, quality and durability of these valves.
BS 2456 specifies requirements for two grades of float, with or without boss inserts.
BS 2456 specifies plastics spherical floats of 102 mm, 114 mm, 127 mm and 152 mm diameter, and non-spherical floats having equivalent lifting efforts, suitable for attachment to the float operated valves specified in BS 1212-1, BS 1212-2 and BS 1212-3, except when otherwise specified by the purchaser in accordance with Appendix A of BS 2456
Who is BS 2456 - Plastics for float operated valves for cold water services for?  
BS 2456 on float operated valves for cold water services form is relevant to: 
- Manufacturers of float operated valves
- Manufacturers of water storage cisterns
- Product designers
- Specifiers
- Quality control and testing personnel 
- Local bodies
Why should you use BS 2456 - Plastics for float operated valves for cold water services? 
BS 2456 provides requirements for the material, design and construction of floats used for the manufacture of float operated valves. Using the right materials can ensure that there is no detrimental effect on the physical, chemical or bacteriological quality of the water.
BS 2456 also discusses various test methods for the evaluation of the performance of plastics used for float operated valves and determine whether they are fit for purpose. These tests include:
- Leakage and hot water test
- Deflection test
- Impact test
- Cold embrittlement test
- Boss distortion test
Thus, if you are a manufacturer of floating valves used for cold water services, compliance with BS 2456 guidelines can ensure that your products are reliable for use and contribute to the optimal performance of the overall water supply system. As a result, you can avoid the risk of leakages arising due to poor quality plastics/floats.
