Norgren V74G-4GK-NMN pressure relief valve - Cat 0/1 SEP
Part Number: V74G-4GK-NMN
Quick Summary
V74G-4GK-NMN pressure relief valve provides precise over-pressure protection for compressed air systems in automation equipment. When downstream actuators or valves stall or jam, this device responds quickly to prevent damage and costly downtime. It is CE compliant and designed to meet category 0 (S.E.P.) and category 1 of the PED 97/23/EC, delivering regulatory assurance for European installations. Built on the Excelon platform, it supports inline installation or modular integration with other Excelon components, reducing installation time and spare parts inventory. With a push-to-lock adjusting knob and tamper-resistant accessory, settings stay stable in demanding environments while allowing safe maintenance and quick recalibration. The valve supports standard G1/2 porting and Rc ports for broad compatibility with existing systems.
Product Information
Extended Description
V74G-4GK-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
G1/2
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
74 mm
Dimensions - Length
170 mm
Dimensions - Width
80 mm
Weight
0.8 kg
Country of Origin
Mexico
Range
V74G
Series
Excelon
Brand
IMI Norgren
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Excelon design enables flexible deployment with both inline and modular installation, reducing installation time and simplifying system expansion. This translates to fewer site visits, lower labor costs, and faster time-to-value for new lines or retrofits. The push-to-lock adjusting knob, paired with a tamper-resistant accessory, ensures pressure settings stay stable under vibration and in busy environments, resulting in consistent performance and easier compliance audits. Over-pressurization protection protects downstream equipment, extending actuator life and reducing unplanned downtime in high-cycle applications such as packaging, robotics, and assembly lines. The valve’s aluminum body with acetal knob and nitrile elastomers delivers reliable resistance to industrial conditions while maintaining light weight for quick mounting and service. G1/2 porting with Rc1/8 gauge port support broad compatibility, enabling seamless integration with existing pneumatic networks. Accessory compatibility, including Quietaire silencers and Excelon service kits, simplifies maintenance and reduces total cost of ownership. PED Cat 0/1 and CE compliance provide regulatory confidence for EU deployments, while the durable Excelon platform supports long-term reliability in demanding environments.
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FAQs
The V74G-4GK-NMN supports inline and modular Excelon installations, allowing easy integration with other Excelon components. Use standard G1/2 piping and Rc1/8 gauge ports to connect to existing lines. When attaching to a modular stack, align ports, tighten mounting hardware securely, and verify that the purge and relief paths remain unobstructed for reliable operation.
Key performance specs include an outlet pressure range of 0.3 to 10 bar and a maximum inlet pressure of 10 bar, with operating temperature from -34 to 80 °C. The device uses an aluminum body, an acetal resin adjusting knob, and nitrile elastomer seals, all weighing about 0.8 kg. Port options are G1/2 and Rc1/8, enabling broad compatibility with common pneumatic systems.
Yes. The valve is CE compliant and designed to meet category 0 (S.E.P.) and category 1 of the PED 97/23/EC, providing regulatory assurance for European installations. This makes it appropriate for OEMs and end users who must maintain PED and CE compliance across automated equipment and pneumatic systems.
Ideal for protecting air-operated equipment in automation lines, robotics cells, and packaging machinery, the V74G-4GK-NMN prevents overpressure events that can damage actuators and downstream components. Its flexible installation, standard porting, and rugged Excelon construction make it a reliable choice for both new builds and retrofits in manufacturing environments.
Maintenance is simplified by compatibility with service kits (V74G-KIT) and silencers like MB004B, reducing downtime during calibration or servicing. The tamper-resistant knob minimizes drift from factory settings, while reliable PED/CE compliance reduces regulatory risk. Overall, expect lower maintenance costs, longer component life, and a faster return on investment from reduced unplanned outages.