PlumbEZ WRAS Approved Boiler Filling Loop 15mm – Part L Compliant Combi Boiler Refill Hose with Double Check Valve

The PlumbEZ WRAS Approved Boiler Filling Loop (15mm) is designed for topping up sealed central heating systems on combi boilers. It provides a controlled way to refill the system when pressure drops, helping keep your heating running efficiently and reliably. This filling loop is WRAS approved and Part L compliant, making it suitable for modern heating installations. It includes a double check valve to help prevent backflow, an isolation valve for easy control, and end caps for a neat, secure finish when the hose is not in use. Key features 15mm connection – common size for combi boiler filling loops WRAS approved for water safety standards Part L compliant – suitable for current building regulation requirements Double check valve to help prevent backflow/contamination risk Isolation valve for straightforward shut-off and maintenance End caps included for added protection and a tidy install Typical uses Topping up pressure on sealed central heating systems Combi boiler refill / boiler top-up hose replacement Heating system maintenance and upgrades Installation notes Fit only where appropriate for your boiler/system design. After topping up, close the isolation valve and refit end caps. Always follow manufacturer instructions and local regulations.