Norgren R72M User Manual
Installation & Maintenance
Instructions
© NORGREN 1997
IM-160.205 (7/97)
Manifold Regulator
R72★ - ★★★ - ★★★
R72M
Port
2....1/4"
3....3/8"
Type
M...manifold
Thread
A ...PTF (1/8 PTF gauge ports)
B ...ISO Rctaper (1/8 ISO Rcgauge ports)
G ...ISO G parallel (1/8 ISO Rcgauge ports)
Gauge
G ...with
N ...without
Outlet pressure adjustment
range*
C ....0,3 to 2 bar (5 to 30 psig)
F.....0,3 to 4 bar (5 to 60 psig)
M....0,3 to 10 bar (5 to 145 psig)
Diaphragm
R ...relieving
N ...non relieving
Adjustment
K ...knob
T....T-bar
TECHNICAL DATA
Fluid: Compressed air
Maximum Pressure: 20 bar (300 psig)
17 bar (250 psig) when used with Quikclamps
Operating Temperature: * –20° to +65°C (0° to +150°F)
* Air supply must be dry enough to avoid ice formation
at temperatures below 2°C (35°F).
Materials:
Body: Zinc
Bonnet:Acetal [zinc for 17 bar (250 psig) versions]
Valve: brass
Elastomers: Nitrile
Bottom plug: Acetal
REPLACEMENT ITEMS
Service Kit (13, 17, 19, 20, 21, 22)
Relieving regulators...............................................4381-500
Non relieving regulators .......................................4381-501
Tamper resistant cover (knob
adjustment only) .....................................................4255-51
PANEL MOUNTING DIMENSIONS
Panel mounting hole diameter: 1.57" (40 mm)
Panel thickness: 0.06" to 0.16" (2 to 4 mm)
INSTALLATION
1.Install regulator in air line at any angle -
● upstream of cycling valves,
● with air flow in direction of arrow on body,
● as close as possible to the device being
serviced.
2.Connect piping to proper ports using pipe thread sealant
on male threads only. Do not allow sealant to enter interior of regulator.
3.Install a pressure gauge or plug the gauge port.
4.Install a Norgren general purpose filter upstream of the
regulator.
5.Typically up to 6 manifold regulators can be connected in
series using Quikclamp 4214-51.
6.For additional units or high flow applications connect
inlet pressure to both ends of regulator combination.
7.Observe inlet/outlet port markings on bottom cover. Inlet
pressure may be connected to either port marked P1.
8.Full flow outlet port is marked P2. Restricted flow gauge
port is marked with an arrow only.
ADJUSTMENT
1. Turn adjustment clockwise to increase pressure setting.
Turn adjustment counterclockwise to decrease pressure
setting.
2.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.
3.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.
4.T-bar adjustment. Tighten lock nut (8) to lock pressure
setting.
DISASSEMBLY
1. Shut off inlet pressure. Reduce pressure in inlet and outlet lines to zero.
2.Turn adjustment (1 or 7) fully counterclockwise.
3.Unit can be disassembled without removal from air line.
4.Disassemble in general accordance with the item numbers on exploded view.
CLEANING
1.Clean parts with warm water and soap.
2.Rinse and dry parts. Blow out internal passages in body
with clean, dry compressed air.
3.Inspect parts. Replace those found to be damaged.
ASSEMBLY
1.Lubricate o-rings, valve stem (20), tip of adjusting screw
(7), and the outer circumference and both sides of the
thrust washer (4) with a light coat of good quality o-ring
grease.
2.Assemble the unit as shown on the exploded view.
3.Torque Table
Torque in
Inch-Pounds (N-m)
2, 9 (Screw) 25 to 35 (2,8 to 3,9)
16 (Bottom plug) 15 to 20 (1,7 to 2,3)
WARNING
These products are intended for use in industrial compressed air systems only. Do not use these products where
pressures and temperatures can exceed those listed under
Technical Data.
If outlet pressure in excess of the regulator pressure
setting could cause downstream equipment to rupture or
malfunction, install a pressure relief device downstream of
the regulator. The relief pressure and flow capacity of the
relief device must satisfy system requirements.
The accuracy of the indication of pressure gauges can
change, both during shipment (despite care in packaging)
and during the service life. If a pressure gauge is to be
used with these products and if inaccurate indications may
be hazardous to personnel or property, the gauge should be
calibrated before initial installation and at regular intervals
during use.
Before using these products with fluids other than air,
for non industrial applications, or for life-support systems
consult Norgren.
Water vapor will pass through these units and will condense into liquid if air temperature drops in the downstream system. Install an air dryer if water condensation
could have a detrimental effect on the application.
* 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.
15
14
1
2
3
4
5
12
13
23
6
22
20
21
19
18
17
16
7
8
9
10
11
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