PlumbEZ WRAS approved boiler filling loop 15mm

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

    £7.99 Inc VAT

    PlumbEZ boiler filling loop 15mm is WRAS approved and Part L compliant for topping up sealed combi boiler systems. Includes double check valve, isolation valve and end caps.

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    75 in stock

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      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.
      Brand

      PlumbEZ
      Type

      Boiler filling loop / top-up hose
      Size

      15mm
      Approval

      WRAS approved
      Compliance

      Part L compliant
      Valves

      Double check valve; isolation valve
      Includes

      End caps

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      Q: What is a boiler filling loop used for?
      A: It’s used to top up pressure in a sealed central heating system (commonly on combi boilers) when the system pressure drops.

      Q: What size is this filling loop?
      A: 15mm.

      Q: What does WRAS approved mean?
      A: It means the product meets recognised UK water safety standards for materials and backflow protection where applicable.

      Q: What does the double check valve do?
      A: It helps prevent backflow, reducing the risk of contamination returning into the water supply.

      Q: What does Part L compliant mean?
      A: It’s designed to meet Part L requirements relating to energy efficiency and compliant heating system components.

      Q: Do I need to leave the filling loop connected?
      A: In many setups the loop is only connected/used for topping up, then isolated and capped. Follow your boiler manufacturer guidance and local regulations.