ETC V74G-4GK-NMN

V74G
EXCELON® Series 74
Pressure Relief Valve
3/8", 1/2", 3/4" Port Sizes
● EXCELON design allows in-line or modular
installation
● Push to lock adjusting knob with tamper resistant
accessory
● Easily disassembled for servicing without removal
from air line
● Helps protect air operated equipment from over
pressure by retarding excessive pressure build up
Technical Data
Ordering Information
Fluid: compressed air
Operating Temperature*: -20° to 80°C
See Ordering Information on following pages.
* Air supply must be dry enough to avoid ice formation at temperatures below 2°C.
Gauge ports:
1/4" PTF with PTF main ports
1/4" ISO Rc with ISO Rc main ports
1/8" ISO Rc with ISO Rc main ports
Materials:
Body: Aluminium
Bonnet: Aluminium
Valve: Aluminium and Nitrile
Elastomers: Nitrile
Bottom plug: Acetal
5/96
ISO Symbols
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the specifications given in this document.
N/UK 8.9.043.01
Issue No.1 Revision 0
V74G
Typical Performance Characteristics
RELIEF CURVE
12
INLET PRESSURE - bar
PORT SIZE: 1/2"
RANGE: 0,3 to 10 bar
9
6
3
0
0
20
40
60
80
100
RELIEF FLOW - dm3/s
Ordering Information. Models listed include ISO G parallel threads, knob adjustment and a 0,3 to 10 bar relief
pressure adjustment range*.
Port Size
G3/8
G1/2
G3/4
Model
V74G-3GK-NMN
V74G-4GK-NMN
V74G-6GK-NMN
Weight kg
0,69
0,68
0,67
Alternative Models
V 7 4 G - ★ ★ ★ - N ★ ★
Threads
PTF
ISO Rc taper
ISO G parallel
Substitute
A
B
G
Adjustment
Knob
T-bar
Substitute
K
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.
Gauge
With (∅ 50 mm)
Without
Substitute
G
N
Relief Pressure
Adjustment Range*
0,3 to 4 bar
0,3 to 10 bar
0,7 to 17 bar**
Substitute
F
M
S
** Units with 17 bar relief pressure range are available
only with the T-bar adjustment; therefore substitute T at the 7th
position and S at the 12th position.
Accessories
Wall Mounting Bracket
∅ 50 mm Gauge
R1/8 Connection
Metal Panel Nut
Tamper Resistant Cover
& Seal Wire††
4324-50
4 bar: 18-013-011
10 bar: 18-013-013
25 bar: 18-013-014
4348-89
4355-51
Seal Wire: 2117-01
†† Use padlock with shackle up to 8 mm (0.3") in diameter.
N/UK 8.9.043.02
Issue No.1 Revision 0
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the specifications given in this document.
5/96
V74G
56
56
37
37
74
74
Panel mounting hole diameter:
52 mm
Panel thickness:
2 to 6 mm
80
Bracket Mounting
151
43
43
127
80
Bracket Kit Reference
69
Use 5 mm screws to mount
bracket to wall.
Part No.
4324-50
79
51
Model
All Models
Port C
L
37
20
Port C
L
61
6
50
5
25
4
Service Kits
Item
Type
Part Number
Service kit
Diaphragm & Seal
4384-700
Service kit includes diaphragm, bottom plug o-ring.
5/96
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the specifications given in this document.
N/UK 8.9.043.03
Issue No.1 Revision 0
V74G
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’.
Before using these products with fluids other than those specified, for nonindustrial applications, life-support systems, or other applications not within
published specifications, consult NORGREN.
Through misuse, age, or malfunction, components used in fluid power
systems can fail in various modes. The system designer is warned to
consider the failure modes of all component parts used in fluid power
systems and to provide adequate safeguards to prevent personal injury or
damage to equipment in the event of such failure.
System designers must provide a warning to end users in the system
instructional manual if protection against a failure mode cannot be
adequately provided.
System designers and end users are cautioned to review specific warnings
found in instruction sheets packed and shipped with these products.
N/UK 8.9.043.04
Issue No.1 Revision 0
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the specifications given in this document.
3/96