C-119
NORGREN EXCELON
®
PRESSUR
RELIEF VALVES
V72G Series
Starts at
$
50
l In-Line or Modular Installation
l Push to Lock Adjusting Knob
with Tamper Resistant Accessory
l Helps Protect Air Operated
Equipment from Over Pressure
by Retarding Excessive Pressure
Build Up
SPECIFICATIONS
Fluid: Compressed air
Maximum Pressure: 20 bar (300 psig)
Operating Temperature*:
-34 to 65°C (-30 to 150°F)
MATERIALS
V72:
Gage Port:1⁄8" PTF with PTF main
ports; 1⁄8" ISO Rc with ISO G
main ports
Exhaust Port:1⁄4" PTF with PTF
main ports; 1⁄4" ISO Rc with
ISO G main ports
V72G:
Body: Zinc
Bonnet: Acetal
Elastomers: Neoprene
Bottom Plug: Acetal
V74G:
Body and Bonnet: Aluminum
Valve: Aluminum and nitrile
Elastomers: Nitrile
Bottom Plug: Acetal
*
Air supply must be dry enough to
avoid ice formation at temperatures
below 2°C (35°F).
OPTIONS SELECTOR
V7G-
-N
Gage Substitute
With G
Without N
Relief pressure
adjustment range* Substitute
0.3 to 4 bar (5 to 60 psig) F
0.3 to 10 bar (5 to 150 psig) M
0.7 to17 bar (10 to 250 psig) S
Adjustment Substitute
Knob K
T-bar T
*
Relief valve 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 relief pressure range are available only with the T-bar adjustment; therefore substitute T at the
7th position and S at the 9th position.
Port size Substitute
1
⁄4" (72) 2
3
⁄8" (72, 74) 3
1
⁄2" (74) 4
3
⁄4" (74) 6
Series Substitute
72 2
74 4
Threads Substitute
PTF A
ISO G parallel G
V72G-2AK-NMG, $50, shown
smaller than actual size.
V74G-3AK-NMG, $78, shown
smaller than actual size.
C-120
Notes: For Excelon®73 combinations use V74G
Ordering Examples: V72G-2AK-NMG, pressure relief valve with
1
⁄
4
" port, PTF threads, 5 to 150 psig adjustment range, with pressure gage, $50.
V74G-3AK-NMG, pressure relief valve with
3
⁄
8
" port, PTF threads, 5 to 150 psig adjustment range, with pressure gage, $78.
MODEL NO. PRICE PORT SIZE (in) PRESSURE RANGE
V72G-2AK-NMG $50
1
⁄
4 0.3 to 10 bar (5 to 150 psig)
V72G-3AK-NMG 52
3
⁄
8 0.3 to 10 bar (5 to 150 psig)
V74G-3AK-NMG 78
3
⁄
8 0.3 to 10 bar (5 to 150 psig)
V74G-4AK-NMG 78
1
⁄
2 0.3 to 10 bar (5 to 150 psig)
V72G-2AK-NFG 55
1
⁄
4
0.3 to 4 bar (5 to 60 psig)
To Order
(Specify Model Number)
MOST POPULAR MODELS HIGHLIGHTED!
STANDARD DIMENSIONS (in)
SERIES A B C F G H PANEL DIA. PANEL DEPTH
72 2.87 0.98 1.02 1.97 1.89 1.38 1.57 0 to 0.2
74 5.00 1.69 1.22 3.15 2.91 2.20 2.05 0.08 to 0.2
METRIC DIMENSIONS (mm)
72 28.3 26.4 26.4 27.4 27.3 26.8 27.0 0 to 5
74 30.4 27.1 26.6 28.6 28.3 27.6 27.5 2 to 5
0 20 40 60 80 100 dm3/s
AIR FLOW
0 40 80 120 160 200 scfm
INLET PRESSURE
6
4
2
0
bar g
100
80
60
40
20
0
psig
PORT SIZE: 1/2
"
RANGE: 0.3 to 10 bar (5 to 150 psig)
V74 RELIEF CHARACTERISTICS
TYPICAL PERFORMANCE CHARACTERISTICS
MODEL NO. PRICE DESCRIPTION
OM-AIR-4224-50 $7.00 Wall mounting bracket for V72G model
OM-AIR-4324-50 9.25 Wall mounting bracket for V74G model
OM-AIR-74316-50 7.00 Neck mounting bracket for V72G model
OM-AIR-4368-51 13.50 Neck mounting bracket for V74G model
ACCESSORIES
Neck mounting
bracket
Wall mounting
bracket
(bracket only)
V72 RELIEF CHARACTERISTICS
psig
bar g
12
150
9
120
90
6
INLET PRESSURE
60
3
30
0
0
0 10 20 30 40 50 60 scfm
0 5 10 15 20 25 dm3/s
PORT SIZE: 1/4
RANGE: 0.3 to 10 bar g (5 to 150 psig)
AIR FLOW
"
*
F
C
A
B
GH
One Omega Drive | Stamford, CT 06907 | 1-888-TC-OMEGA (1-888-826-6342) | info@omega.com
EPG05
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