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  Watts 1 in. Boiler Header Module
Watts 1 in. Boiler Header Module
Click to enlarge

Complete Packages to Purge, Quiet, Fill,
and Service Your Hydronic System

Out of the box, Watt's Boiler Header Module delivers components that make following the industry recommended near-boiler piping virtually foolproof. Boiler industry recommendations (system purge station, followed by an air separator, followed by a service fitting) ensure the contractor correctly pipes a hydronic installation — quickly, easily, and neatly in a compact job space.


  • AS-MBAS-MBFL Air Separator - The AS-MB Air Separator employs rugged, corrosion-resistant coalescing media and a Duo Vent air vent assembly to provide microbubble air separation for a quieter heating system. The unit is fully serviceable in the field and comes in a flanged model designed to mate with the PIPF-T System Purge Station.
  • RBFFRBFF Service Fitting - Setting a new standard for fast and easy service calls, the RBFF Service Fitting is connected below the AS-MB Air Separator. The RBFF employs a unique 3-way ball valve for isolation of the water pressure regulator and expansion tank from system pressure. The RBFF Service Fitting’s drain port allows for unloading pressure from the waterside of the expansion tank diaphragm for air charge servicing and maintenance. Compared with traditional installations, the RBFF’s one-piece construction eliminates up to 11 threaded joints.
  • RBFF1" NFT PIPF-T System Purge Station - During commissioning, by closing the Series PIPF-T’s ball valve and connecting a hose to the purge fitting, an installer can push all of the initial air out of the system. PIPF-T replaces up to seven fittings with a single compact unit.

For more information see:

HP-BHM Boiler Header Module Sales Brochure
AS-MB Air Separator Specification Sheet
AS-MB Air Separator Installation Sheet
PIPF-T System Purge Station Specification Sheet
PIPF-T System Purge Station Installation Sheet
RBFF Service Fitting Specification Sheet
RBFF Service Fitting Installation Sheet

Part Number: HP-BHM-100

Price: $183.60

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