Norgren R74R Series Datasheets - Manual

See Section ALE-24 for Accessories
Littleton, CO USA Phone 303-794-2611 www.norgren.com
R74G/R
● Excelon design allows in-line or modular installation
● Full flow gauge ports
● Balanced valve design minimizes effect of variation
in the inlet pressure on the outlet pressure
● Standard relieving models allow reduction of
downstream pressure when the system is
dead-ended
● Optional reverse flow models available for use
downstream of directional control valves
● Modular installations with Excelon 72, 73, and 74
series can be made to suit particular applications
Excelon 74 Pressure Regulator
3/8", 1/2", 3/4" Port Sizes
ALE-4-10
Alternative Models
Ordering Information. Models listed include uni-directional flow, PTF threads, knob adjustment, relieving diaphragm, 5 to 150 psig
(0.3 to 10 bar) outlet pressure adjustment range*,with gauge.
R 7 4 - ★ ★ ★ - ★ ★ ★ ★
Threads Substitute
PTF A
ISO Rc taper B
ISO G parallel G
Adjustment Substitute
Knob K
T-bar T
Port Size Model Flow † scfm (dm 3 /s) Weight lb (kg)
3/8" R74G-3AK-RMG 208 (98) 1.80 (0.82)
1/2" R74G-4AK-RMG 220 (105) 1.77 (0.80)
3/4" R74G-6AK-RMG 220 (105) 1.73 (0.78)
Diaphragm Substitute
Relieving R
Non relieving N
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
Port Size Substitute
3/8" 3
1/2" 4
3/4" 6
† Typical flow with 150 psig (10 bar) inlet pressure, 90 psig (6.3 bar) set pressure and a droop of 15 psig (1 bar) from set.
Flow Type Substitute
Uni-directional G
Reverse R
* 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; therefore substitute T at the 7th
position and S at the 9th position.