Product Overview

A-4000 Series Oil Removal and Pressure-Reducing Stations and Air Compressor Accessories Product
Bulletin
2
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.
Table 1: Models
Flow Consumption Compressor Horsepower
(50% Running Time)
PRVs Code Number
Up to a Maximum of 10 scfm (4.7 l/s) Johnson Controls® 7-1/2 hp and Under Single A-4000-139
Dual A-4000-140
10 to 20 scfm Maximum (4.7 to 9.4 l/s) Other Manufacturers 7-1/2 hp and Over Single A-4000-141
Dual A-4000-142
Table 2: Repair Parts
Description Code Number
Charcoal Filter Elements 10 scfm (4.7 l/s) A-4000-632
20 scfm (9.4 l/s) A-4000-633
Coalescing Filter Elements 10 scfm (4.7 l/s) A-4110-604
20 scfm (9.4 l/s) A-4000-604
3/8 in. Pressure Regulator with Bracket, Gage, and Safety Relief Valve A-4000-138
Four-Way Bypass Valve with 3/8 in. Compression Fittings A-4110-601
Figure 5: A-4110-601
Four-Way Bypass Valve
Figure 6: Flow Path with Bypass Valve in Normal
Operating Position (Applies to all Models)
Dimensions, in./mm