Product Overview

Single PRV models are factory
set for approximately 20 PSIG
(140 kPa) and dual PRV models
are factory set for approximately
15 and 20 PSIG (105 and 140
kPa). Dual 10 SCFM units have
a maximum of 1 PSI (7 kPa)
pressure drop with a 10 SCFM
flow from the PRVs through the
three-way air valve; dual
20 SCFM units have a maximum
of 2 PSI (14 kPa) pressure drop.
The three-way air valve is
equipped with a 1/2 in. O.D.
compression fitting to furnish the
dual supply air to the system. A
1/2 in. connection is furnished to
provide a constant 20 PSIG (140
kPa) supply to local control
panels and a 3/8 in. connection
is furnished to provide filtered
high pressure air to remote PRV
stations.
Note: All A-4000 Series Oil
Removal and Pressure
Reducing Stations are
shipped from the factory with
the activated charcoal filter
packaged separately in the
carton. The filter must be
reinstalled by screwing it onto
the threaded pipe of the filter
head. Tighten the filter to the
point where the white label
faces the front of the unit.
Fig. 5: A-4110-601
Four-Way Bypass Valve
2 A-4000 Product Bulletin