BA294 RPZ back-flow prevention valves Ralken Colours of Bradford has installed two Honeywell back-flow prevention valves to prevent chemicals entering the public water supply during a wash-down process, so safeguarding water supplies and meeting the back flow requirements of the Water Supply (Water Fittings) Regulations 1999. Yorkshire Water carried out a Water Regulations survey that highlighted the need for the Honeywell BA294 RPZ (Reduced Pressure Zone) back-flow prevention valves. They warned that, under certain conditions, the cleaning of chemical drums using trigger-operated hoses could result in contaminated water being sucked into the water main. Honeywell RPZ valves are often used where reliable back flow prevention is required, as they can provide a cheaper and more compact solution than a traditional break tank and booster pump. It was a requirement of the installation that a strainer be fitted before each RPZ valve assembly and that isolation valves were installed on both sides.
