Watts HP-BHM - Manual (Page 3)

PIPF-T System Purge Station
PIPF-T
AS-MB
RBFF
B911S-M3
During commissioning, by closing the Series PIPF-T’s ball valve and connect-
ing 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.
AS-MB Air Separator
The AS-MB Air Separator employs rugged, corrosion-resistant coalescing me-
dia 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.
RBFF 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 unload-
ing 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.
B911S-M3 Fill Valve Assembly
The B911S-M3 Fill Valve Assembly, a combination high-capacity fill valve,
backflow preventer, and feed water pressure regulator, is packaged in one pre-
assembled unit. This valve is designed for use on boiler feed lines to provide
make-up water to the boiler and prevent backflow when supply pressure fails
below system pressure.
ETX Expansion Tank
Series ETX non-potable expansion tank is for use in closed loop hydronic heat-
ing system piping to control the thermal expansion of hot water and maintain
system pressure below the relief setting of the relief valve.
ETX