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Model RBFF Residential Boiler Fill Fitting

The Model RBFF Residential Boiler Fill Fitting (RBFF) provides a convenient solution to comply with boiler manufacturers’ piping requirements and provide ease of service for expansion tanks and water pressure regulator valves in closed-loop hot water heating systems. Using a unique 3-way ball valve design, the RBFF eliminates up to twelve 1/2 inch fittings in a compact package.

Features:

  • One-piece construction, eliminating up to 11 threaded joints.
  • Unique 3-way ball valve for isolation of water pressure regulator and expansion tank from system pressure.
  • Drain port with integral ball valve for unloading pressure from waterside of expansion tank diaphragm for air charge servicing and maintenance. Drain port can also be used for a variety of system draining and filling operations.
  • 0 to 30psi pressure gauge for convenient system pressure reference.

Installation

The Model RBFF Residential Boiler Fill Fitting (RBFF) should be installed in closed-loop hot water heating systems as per the piping diagram shown below.

More Information

Product Flyer

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Model RBFF Flyer

Specification Sheet
Installation Instructions

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