Norgren R73G-4GK-RFN Excelon pressure regulator - Relieving
Part Number: R73G-4GK-RFN
Quick Summary
Norgren R73G-4GK-RFN Excelon pressure regulator for compressed air provides precise control in automation and manufacturing lines. Engineers frequently contend with pressure drift and dead-end situations that disrupt cycles, and this regulator's balanced valve design and relieving capability help stabilize downstream pressure. Data sheets for Excelon parts commonly reference inline or modular installation, G1/2 porting, and robust materials, supporting long service life in harsh environments. Certification details like CE marking, SIL level, and IP ratings vary by variant; consult the official datasheet or distributor for exact specifications and variants. Designed for easy integration with existing systems and tamper-resistant adjustment features, it delivers reliable performance, lowers maintenance costs, and improves line uptime.
Product Information
Extended Description
R73G-4GK-RFN 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
G1/2
Gauge Port
Rc1/8
Adjustment
Knob
Maximum Inlet Pressure
20 bar
Outlet Pressure Adjustment
0.3 ... 4 bar, 4 ... 58 psi
Relieving / Non Relieving
Relieving
Flow
60 dm3/sec, 127 scfm
Materials - Adjusting Knob
Acetal resin
Materials - Body
Diecast aluminium
Materials - Bonnet
Zinc
Materials - Elastomers
Nitrile rubber
Range
R73G
Series
Excelon
Brand
IMI Norgren
R84G-4GK-RFN
Excelon Plus general purpose pressure regulator, G1/2, 0.3-4 bar, without gauge
R84G-4GK-RFG
Excelon Plus general purpose pressure regulator, G1/2, 0.3-4 bar, integrated gauge
Feature is inline or modular installation capability → Business Impact is flexible integration with existing pneumatic networks, reducing installation time and space requirements → Application is compact automation lines and modular systems. Feature is balanced valve design for optimum pressure control → Business Impact is stable downstream pressure, fewer fluctuations, and improved process consistency → Application is general pneumatic networks and precision tooling. Feature is relieving model for dead-ended systems → Business Impact is safer operation and reduced risk of overpressure, enabling safe handoff to downstream equipment → Application is automated machines that may experience dead-end conditions. Feature is push-to-lock adjusting knob with tamper-resistant accessory → Business Impact is minimized drift due to unauthorized adjustments, ensuring regulatory compliance and predictable performance → Application is environments needing controlled access and traceable settings. Feature is robust materials: die-cast aluminium body, zinc bonnet, nitrile elastomers → Business Impact is durability and chemical resistance in harsh factory floors, lowering replacement costs → Application is long-life regulators in factories with aggressive particulates. Feature is clear specification set: G1/2 port, Rc1/8 gauge port, 20 bar max inlet, 0.3–4 bar outlet, 60 dm3/s flow → Business Impact is broad compatibility with standard pneumatic circuits and predictable performance envelopes → Application is general purpose regulation for compressed air systems. Feature is range R73G within Excelon series by IMI Norgren → Business Impact is proven reliability and ease of sourcing spare parts within a familiar ecosystem → Application is scalable asset in automated production lines.
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FAQs
Install the regulator with G1/2 porting and Rc1/8 gauge port for monitoring. Position the unit for inline or modular integration, ensuring clear flow paths and accessibility for the adjustment knob. Use the tamper-resistant accessory where required, and verify that the adjustable outlet is set within the 0.3 to 4 bar range before commissioning. Confirm downstream components can tolerate the relieved pressure and that the gauge port is sealed if not used.
The Excelon R73G-4GK-RFN offers an outlet adjustment of 0.3 to 4 bar (4 to 58 psi) and a maximum inlet pressure of 20 bar. This combination supports robust regulation for typical automation lines while providing a safe margin for transient spikes. Ensure downstream devices are rated for 4 bar and that installation permits adequate venting in relieving mode.
Yes. The R73G-4GK-RFN is a relieving regulator designed to reduce downstream pressure when the system becomes dead-ended. This capability helps prevent overpressure events and improves safety and uptime in automated tooling and process lines. When integrating, verify that the relief path remains unobstructed and that downstream components can accommodate anticipated relief flow.
Certification details such as CE, SIL, or IP ratings are not listed in the provided data for this specific variant. Check the official Norgren datasheet for R73G-4GK-RFN or contact the distributor to confirm exact certifications for your region and application. Always validate compliance against your internal standards and regulatory requirements before deployment.
Regular inspection of the adjustment knob and sealing elastomers; replace Nitrile rubber components as wear dictates; monitor inlet and outlet pressures to ensure consistent setpoints; ensure gauge ports are used or properly sealed; verify inline or modular connections remain secure; consult the datasheet for maintenance intervals and torque recommendations to preserve the regulator’s accuracy and longevity.