Norgren R74M Series - Manual

Our policy is one of continued research and development. We therefore reserve the right to amend,
without notice, the specifications given in this document.
4/09 N/US - 5.4.210.01
Excelon ® R74M
Manifold Regulator
1/2" and 3/4" port sizes
Technical data
Fluid: Compressed air
Maximum pressure
290 psig (20 bar)
Operating temperature*
-30° to 175°F (-34° to 80°C)
* Air supply must be dry enough to avoid ice formation at
temperatures below 35°F (2°C).
Ports
Inlet ports (2): 1/2" or 3/4" PTF or ISO G
Outlet port (1): 1/2" PTF with PTF inlet ports,
1/2" ISO Rc with ISO G inlet ports
Gauge port (1): 1/8" PTF with PTF inlet ports,
1/8" ISO Rc with ISO G inlet ports
Materials
Body: Zinc
Bonnet: Zinc
Elastomers: Nitrile
Bottom plug: Acetal
Excelon ® design allows in-line or
modular installation
Manifold typically up to six
regulators without booster signal
RoHS compliant
Inlet Port (2) Outlet Port (1) Model Flow† scfm (dm3/s) Weight lb (kg)
1/2" 1/2" R74M 4AK RMG 220 (105) 1.77 (0.8)
3/4" 1/2" R74M 6AK RMG 220 (105) 1.73 (0.78)
Ordering Information.
Models listed include PTF threads, knob adjustment, relieving diaphragm, 5 to 150 psig (0.3 to 10 bar) outlet pressure adjustment
range* with gauge.
Alternative Models
R74M ˙˙˙ ˙˙˙
Inlet Port Size Substitute
1/2" 4
3/4" 6
Gauge Substitute
With G
Without N
Outlet Pressure Adjustment Range* Substitute
5 to 60 psig (0.3 to 4 bar) F
5 to 150 psig (0.3 to 10 bar) M
10 to 250 psig (0.7 to 17 bar)** S
Diaphragm Substitute
Relieving R
Non relieving N
* 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.
** Units with 250 psig (17 bar) outlet pressure range are available
only with the T-bar adjustment. Substitute “T” in the 7th position
and “S” in the 9th position.
† Typical flow with 150 psig (10 bar) inlet pressure, 90 psig (6.3 bar) set pressure and a 15 psig (1 bar) droop from set.
Adjustment Substitute
Knob K
T-bar T
Threads Substitute
PTF A
ISO Rc taper B
ISO G parallel G
ISO Symbols
R7*G Relieving R7*G Non Relieving
0 20 40 60 80 100 dm 3 /s
AIR FLOW
0 40 80 120 160 200 scfm
6
4
2
0
b
a
r
g
100
80
60
40
20
0
p
s
ig PORT SIZE: 1/2"
INLET PRESSURE: 150 psig (10 bar g)
RANGE: 5 to 150 psig (0.3 to 10 bar)
FLOW CHARACTERISTICS