Norgren R74G-4AK-NFN Excelon Pressure Regulator - 0.3-4 bar
Part Number: R74G-4AK-NFN
Quick Summary
Norgren R74G-4AK-NFN Excelon pressure regulator is a compact inline device that maintains precise downstream pressure in compressed air systems. Fluctuating downstream pressure can disrupt actuator response, increase cycle times, and wear components prematurely. In typical industrial deployments engineers look for CE compliance, SIL suitability for safety-critical loops, and robust IP-rated protection in mounting configurations. This model supports inline or modular installation, offering reliable control with a knob-adjusted, tamper-resistant design, while delivering compatibility and value across automation lines and packaging cells.
Product Information
Extended Description
R74G-4AK-NFN Norgren: Excelon design allows in-line or modular installation | Balanced valve design for optimum pressure control | Standard relieving models allow reduction of downstream pressure when the system is dead-ended | Push to lock adjusting knob with tamper resistant accessory
Medium
Compressed air
Operating Temperature
-34 ... 80 °C, -29 ... 176 °F
Port Size
1/2" PTF
Gauge Port
1/4" PTF
Adjustment
Knob
Maximum Inlet Pressure
20 bar
Outlet Pressure Adjustment
0.3 ... 4 bar, 4 ... 58 psi
Relieving / Non Relieving
Non-relieving
Flow
105 dm3/sec, 222 scfm
Materials - Adjusting Knob
Acetal resin
Materials - Body
Diecast aluminium
Materials - Bonnet
Diecast aluminium
Materials - Elastomers
Nitrile rubber
Range
R74G
Series
Excelon
Brand
IMI Norgren
4315-03
Quikmount pipe adapter
4324-50
'Universal' Bracket
4368-51
Neck Mounting Bracket
4314-51
Quikclamp
4314-52
Quikclamp with wall mounting bracket
4355-51
Tamper Resistant Cover and Wire
4348-89
Panel Mounting Nut
Feature balance → Business impact → Application: Balanced valve design provides precise downstream pressure control, reducing fluctuations and wear, improving actuator response and cycle consistency for high-throughput packaging lines and automated tooling. Feature inline or modular installation → Business impact easier integration, reduced wiring complexity, and scalable configurations, enabling rapid deployment in panel-mounted or inline air lines across multiple machines. Feature push to lock adjusting knob with tamper-resistant accessory → Business impact protects calibrations in busy plants, lowering maintenance calls and ensuring stable process control in demanding environments. Feature non-relieving design → Business impact avoids unintended downstream pressure release in dead-end sections, enhancing safety and process integrity in critical lines. Feature gauge port 1/4" PTF → Business impact enables real-time monitoring and calibration, supporting predictive maintenance and tighter process control in continuous operation. Feature durable materials and robust construction → Business impact delivers reliable performance across -34 to 80 °C and up to 20 bar inlet, reducing downtime and replacement costs in harsh environments.
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FAQs
Yes. The R74G-4AK-NFN supports both inline and modular installation in compressed air lines. It uses a 1/2" PTF port and provides a 1/4" gauge port for monitoring. The regulator is non-relieving and features a knob-adjustment with a tamper-resistant option to secure settings in busy environments.
The unit accepts up to 20 bar at the inlet and provides outlet pressure adjustment from 0.3 to 4 bar (4 to 58 psi). This combination supports robust control across typical industrial pneumatic systems while maintaining safety margins in dead-end and high-demand sections.
Key materials include a diecast aluminium body and bonnet, an acetal resin adjusting knob, and nitrile rubber elastomers. This combination delivers rugged, corrosion-resistant performance in harsh environments, with reliable sealing and long service life under wide operating temperatures and frequent cycling.
This Excelon regulator is designed for industrial use and supports typical global standards. For safety-critical applications, verify CE compliance, SIL suitability, and appropriate IP protection in your installation. Always check the official datasheet or contact the supplier to confirm current certification status for your region and application.
Install inline or in modular configurations with the correct porting and mounting accessories (Quikmount, universal brackets, clamps). Use the tamper-resistant knob to prevent drift, monitor with the 1/4" gauge port, and schedule periodic calibration checks. Ensure inlet pressure remains within the 20 bar limit and routinely inspect elastomer seals for wear.