AIR
PREPARATION
PRODUCTS
4
APP-93
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Pilot Operated Regulators
R18
Feedback Pilot Regulator Warning
The feedback line must sense the pilot operated regulator outlet pressure and must be connected before turning on the air supply. If the feedback line is not
connected, the pilot operated regulator outlet pressure will rapidly increase to the inlet pressure when the adjusting knob on the pilot regulator is turned clockwise.
NOTE: Do not use the R41 feedback pilot regulator to control outlet pressures at or less than 100 psig (7 bar). Use the 11-104 feedback pilot regulator at those
pressures. Feedback pilots are designed for applications that require superior pressure regulation under changing flow conditions where changes in flow demand
are not sudden or cyclic.
3.56
(91)
5.51
(140)
7.24
(184)
5.98 (152)
Relief (exhaust) port 3/4"
Typical Performance Characteristics
PORT SIZE: 2"
PILOT SPRING RANGE: 5 to 125 psig (0.3 TO 8.5 bar)
INLET PRESSURE: 100 psig (0.7 bar)
R18 with R40 CONVENTIONAL PILOT:
R18 with 11-104 FEEDBACK PILOT:
FLOW CHARACTERISTICS
0 200 400 600 800 1000 dm
3
/s
AIR FLOW
0 400 800 1200 1600 2000 scfm
OUTLET
PRESSURE
8
6
4
2
0
bar
g
100
80
60
40
20
0
psig
RELIEF CHARACTERISTICS
0 20 40 60 80 100 dm
3
/s
AIR FLOW
0 40 80 120 160 200 scfm
8
6
4
2
0
OUTLET
PRESSURE
bar
g
100
80
60
40
20
0
psig
PORT SIZE: 2"
INLET PRESSURE: 150 psig (10 bar)
R18 with R40 CONVENTIONAL PILOT:
R18 with 11-104 FEEDBACK PILOT:
Service Kits
Type Part number
R18 5945-40
R18 service lit contains filter screen and all o-rings.
SUPPLY
AIR
FEEDBACK
PILOT
REGULATOR
PILOT
OUTPUT
LINE
FEEDBACK
LINE
SUPPLY
AIR
OUTLET
AIR
PILOT OPERATED
REGULATOR
Typical Installation
Feedback Pilot and Pilot Operated Regulator
SUPPLY
AIR
OUTLET
AIR
CONVENTIONAL
PILOT REGULATOR
PILOT OPERATED
REGULATOR
PILOT
OUTPUT
LINE
SUPPLY
AIR
Typical Installation
Conventional Pilot and Pilot Operated Regulator
