Filmaster Filling Loop

Filling Loop Cap & Tag
15mm Filling Loop with Integral Check Valve
Disclaimer: All images are for illustrative purposes only.

Cold water filling hose for sealed central heating systems with integral check valve and isolator

Reliance Valves Filling Loop is a pipe connection to a central heating system to re-fill or re-pressurise the system from the mains water supply. The boiler filling loop feeds water back into the system and is detached once the system has been filled to the adequate pressure.

The filling loop is not part of the boiler system and is detached ready for re-use after each use. Both connections on the pipe are fitted with valves to allow the user to easily cut off the water supply and disconnect the pipe.

Protecting against Category 3 contamination risks, the filling loop has been designed with 15mm compression connections, thumb-grip nuts on the hose and a ball valve for easy operation and installation. It also comes with an integral check valve and isolator.

Features and benefits

  • 1/8" BSP test port on isolating double check valve
  • 15mm compression connections
  • Protects against Category 3 contamination risks
  • Ball valve with lever for easy operation
  • Metal watertight blanking cap for additional security
  • Braided hose of 9mm nominal bore, with thumb-grip nuts on hose to allow quick connection/disconnection to mains supply
  • Suitable for cold water use only


WRAS approved product
SKUDescriptionOutlet Size mmBSP ″Accreditations
BCAP2462001⁄2″ Filling Loop Sealing Cap & Tag1⁄2
FIBV24620815mm Filling Loop with Integral Check Valve15