R64G Regulator
Installation & Maintenance Instructions
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I&M/en 8.240.200.01
Our policy is one of continued research and development. We therefore reserve the right to amend,
without notice, the specifications given in this document. (1999 - I&M8078d) © 2015 IMI International s.r.o.
Fluid: Compressed air
Maximum pressure: 17 bar (250 psig)
Operating temperature*:
–20° ... +80°C (0° ... +175°F)
* Air supply must be dry enough to avoid ice
formation at temperatures below +2°C (+35°F).
Typical flow with 10 bar (150 psig) inlet pressure,
6,3 bar (90 psig) set pressure and 1 bar
(15 psig) droop from set: 120 dm3/s (254 scfm)
Gauge ports:
1/8“ PTF with PTF main ports
1/8“ ISO Rc with ISO Rc main ports
1/8“ ISO Rc with ISO G main ports
Materials:
Body: Zinc
Bonnet: Aluminium
Valve: Brass
Elastomers: Synthetic rubber
Replacement Items
Service kit, contains required items circled:
Relieving
4381-200
Non relieving
4381-201
Panel Mounting Dimensions
Panel mounting hole diameter: 52 mm (2.06“)
Panel thickness: 6 mm (0.25“) max.
Installation
1. Install unit vertically in air line -
• upstream of lubricators and cycling valves,
• with air flow in direction of arrow on body,
• as close as possible to the device being
serviced.
2. Before assembling the basic unit into the yoke
the port seal o-rings should be lightly smeared
with o-ring grease.
3. Locate clamp ring under lugs on top of yoke,
offer basic unit into yoke with directional
arrows correctly aligned (an interference fit
prevents assembly if misaligned) before
engaging and fully tightening the clamp ring.
4. Install a pressure gauge or plug the gauge
ports. Gauge ports can also be used as
additional outlets for regulated air.
A
B
C
Adjustment
1. Before applying inlet pressure to regulator,
turn adjustment (1 or 6) counterclockwise to
remove all force on regulating spring (11).
2. Apply inlet pressure, then turn adjustment
(1 or 6) clockwise to increase and
counterclockwise to decrease pressure
setting.
3. Always approach the desired pressure from
a lower pressure. When reducing from a
higher to a lower setting, first reduce to some
pressure less than that desired, then bring up
to the desired pressure.
Note
With non-relieving regulators, make pressure
reductions with some air flow in the system.
If made under no flow (dead-end) conditions,
the regulator will trap the over-pressure in the
downstream line.
4. Knob adjustment. Push knob down to lock
pressure setting. Pull knob up to release.
Install tamper resistant cover (see
Replacement Items) to make setting tamper
resistant.
5. T-BAR adjustment. Tighten lock nut (7) to lock
pressure setting.
Disassembly
1. Shut off inlet pressure. Reduce pressure in
inlet and outlet lines to zero. Turn adjustment
(1 or 6) fully counterclockwise.
2. For ease of maintenance the unit can be
removed from the yoke by unscrewing the
clamp ring, which will jack the unit out
downwards.
3. Disassemble in general accordance with the
item numbers on exploded view.
4. To disassemble turn the adjuster (1 or 6)
counter-clockwise to relieve compression on
the adjusting spring (11). Remove 4 screws
(2 or 8) to disassemble the bonnet (3 or 9)
from the body. Remove the adjusting spring
(11) and diaphragm (12). Inspect all
components for damage, foreign matter
and cleanliness and reassemble using service
replacement parts where necessary.
Cleaning
1. Clean parts with warm water and soap.
2. Rinse and dry parts. Blow out internal pas
sages in body with clean, dry compressed
air.
3. Inspect parts. Replace those found to be
damaged.
Assembly
1. Lubricate o-rings with o-ring grease.
2. Check valve for free movement in the valve
guide.
3. Assemble the unit as shown on the exploded
view.
4. Torque Table
Torque in
Item
N-m
(Inch-Pounds)
3, 9 (Bonnet) 61 ... 68
(555 ... 618)
Technical features
Option selector
Port
2 1/4”
3 3/8“
4 1/2“
6 3/4
Gauge
G With
N Without
Thread
A
PTF (1/8 PTF gauge ports)
B
ISO Rc taper (1/8 ISO Rc gauge ports)
G
ISO G parallel (1/8 ISO Rc gauge ports)
R64
G
–
˙˙˙
–
˙˙˙
Diaphragm
R Relieving
N
Non relieving
Adjustment
K Knob
T T-bar
Spring (Outlet pressure range) *
F
0,3 ... 4 bar (3 ... 60 psig)
M 0,3 ... 10 bar (3 ... 150 psig)
S *1) 0,7 ... 17 bar (10 ... 250 psig)
* Outlet pressure can be adjusted to pressures in excess of, and less than, those specified. Do not use these units to control pressures outside of the specified ranges.
*1) Units with 17 bar (250 psig) adjustment range are available only with the T-bar adjustment, therefore substitute T at the 7th digit and S at the 12th position.
7
1
2
6
9
10
11
12
14
16
13
19
17
18
4
3
5
8
20
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