Honeywell has launched its BA295 series of compact backflow preventers, which ensure contaminated water cannot flow back into the public mains supply. They use the RPZ (reduced pressure zone) principle, featured in Honeywell’s existing products, but a thorough product redesign further simplifies servicing and greatly minimises spares holding. The BA295 series protects mains water systems against back pressure, back flow and back syphonage, ensuring compliance with relevant water regulations. The valves can be used for residential buildings, industrial and commercial purposes. Fluids up to and including liquid category 4 (toxic, very toxic, carcinogenic and radioactive substances) to EN 1717 are protected. This corresponds to construction type 2 to EN 1717. The number of spares required to service all models in the BA295 range is very small, which is excellent news for testing and service personnel. The valves provide a neat and cost-effective alternative to providing an air gap – traditionally achieved by header tanks – to isolate water systems. They feature triple security to provide optimum protection against back pressure and back siphonage: two check valves and a discharge valve divide the unit into three chambers, each providing a separate pressure zone.
Maintenance is simple, as there is unrestricted access to all internal components and the discharge valve is mounted on the underside.
