Norgren V74G-6GK-NMN Excelon relief valve - CE/SEP
Part Number: V74G-6GK-NMN
Quick Summary
Excelon relief valve from Norgren protects pneumatic systems by limiting inlet pressure and safeguarding critical actuators in automation lines. Operators and maintenance teams often face unplanned overpressure events that damage components and trigger costly downtime. This device complies with category 0 (S.E.P.) and category 1 of the Pressure Equipment Directive 97/23/EC, providing regulatory safety and reliability. Its inline installation or modular Excelon configurations offer scalable integration without complex retrofits, while the tamper-resistant adjusting knob reduces set-point drift. With an aluminium body and nitrile elastomer seals, the V74G-6GK-NMN combines durability with precise pressure control for demanding industrial environments.
Product Information
Extended Description
V74G-6GK-NMN Norgren: Excelon design allows in-line installation or modular installation with other Excelon products | Push to lock adjusting knob with tamper resistant accessory | Helps protect air operated equipment from over pressurisation | Norgren pressure relief valves comply with category 0(S.E.P.) and category 1 of the Pressure Equipment Directive 97/23/EC.
Medium
Compressed air
Operating Temperature
-34 ... 80 °C, -30 ... 175 °F
Port Size
G3/4
Gauge Port
Rc1/8
Maximum Inlet Pressure
10 bar
Outlet Pressure Adjustment
0.3 ... 10 bar, 4 ... 145 psi
Materials - Adjusting Knob
Acetal resin
Materials - Body
Aluminium
Materials - Bonnet
Aluminium
Materials - Elastomers
Nitrile rubber
Dimensions - Height
170 mm
Dimensions - Length
74 mm
Dimensions - Width
80 mm
Weight
0.78 kg
Country of Origin
Mexico
Range
V74G
Series
Excelon
Brand
IMI Norgren
T74T-6GA-P1N
Excelon 3/2 modular system shut-off valve, G3/4
4355-51
Tamper Resistant Cover and Wire
4324-50
'Universal' Bracket
4314-51
Quikclamp
4368-51
Neck Mounting Bracket
4314-52
Quikclamp with wall mounting bracket
V74G-KIT
Service kit V74G
MB004B
Quietaire heavy duty silencer male, R1/2
T40B1800
Quietaire sintered bronze silencer, R1/8
Feature: G3/4 port size with Rc1/8 gauge port. Benefit: Enables compact, space-efficient installation with integrated pressure monitoring and straightforward gauge connection for fast commissioning. Application: Fits standard compressed air lines in panel-mounted automation systems. Feature: Outlet pressure adjustment range of 0.3 to 10 bar and maximum inlet pressure of 10 bar. Benefit: Delivers precise, adjustable overpressure protection tailored to actuator load, reducing wear and energy waste. Application: Critical on pneumatic actuators and line starts where tight pressure control matters. Feature: Push to lock adjusting knob with tamper-resistant accessory. Benefit: Prevents unintended set-point changes, lowering maintenance calls and safeguarding process stability. Application: Field installations in exposed enclosures or high-traffic equipment rooms. Feature: Materials - Aluminium body and bonnet, acetal adjusting knob, nitrile elastomer seals. Benefit: Combines corrosion resistance, light weight, and long life in harsh industrial environments. Application: OEM and retrofit projects in manufacturing and packaging plants. Feature: Inline installation or modular Excelon compatibility. Benefit: Flexible deployment from single-point protection to scalable, modular system designs with minimal retrofits. Application: New builds and upgrades in automated lines where future expansion is anticipated. Feature: PED CE SEP compliance and Category 0/1 safety framing. Benefit: Ensures regulatory compliance and mitigates risk for audits and procurement, supporting quality and safety programs. Application: Engineering specifications for compliant pneumatic systems in regulated industries.
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FAQs
The V74G-6GK-NMN is designed for inline installation or as part of the Excelon modular system. Mount the valve using standard G3/4 piping, connect the Rc1/8 gauge port for pressure monitoring, and set the outlet range between 0.3 and 10 bar. Ensure the body is secured to a stable panel or bracket to maintain alignment and sealing.
Key specs include compressed air as the medium, operating temperature from -34 to 80 °C (-30 to 175 °F), port size G3/4, gauge port Rc1/8, maximum inlet pressure 10 bar, outlet adjustment 0.3-10 bar (4-145 psi), and materials: aluminium body and bonnet, acetal adjusting knob, and nitrile elastomer seals.
Yes. The V74G-6GK-NMN complies with category 0 (S.E.P.) and category 1 of the Pressure Equipment Directive 97/23/EC, providing CE marking and regulatory safety for industrial pneumatic installations. This makes it suitable for regulated environments and simplifies supplier qualification during procurement.
Ideal for automated manufacturing lines, packaging equipment, and pneumatic control systems where overpressure protection is essential. The valve’s adjustable 0.3-10 bar range, G3/4 port, and modular Excelon compatibility support reliable protection of actuators, extend equipment life, and reduce unplanned downtime in high-demand facilities.
Compatible accessories include T74T-6GA-P1N Excelon 3/2 modular shut-off valve, 4355-51 tamper resistant cover and wire, 4324-50 universal bracket, 4314-51 Quikclamp, 4368-51 neck mounting bracket, 4314-52 wall-mount Quikclamp, V74G-KIT service kit, MB004B silencers, and T40B1800 sintered bronze silencer. These enable secure mounting, noise reduction, and easy field servicing.