Norgren R73G-4AK-RFN Excelon Regulator - Relieving
Part Number: R73G-4AK-RFN
Quick Summary
Norgren R73G-4AK-RFN Excelon regulator provides precise pressure control for pneumatic systems in manufacturing automation. Fluctuating downstream pressure and dead-ended lines can disrupt tool performance, increase waste, and cause unplanned downtime. While specific certifications aren’t listed here, Norgren Excelon components are designed for safe, standards-based operation in demanding environments. The Excelon design supports inline or modular installation for flexible layouts, and its balanced valve improves steady output. The push-to-lock knob with a tamper-resistant accessory helps maintain accuracy in multi-shift plants. With a wide operating temperature range and a 0.3–4 bar output, it scales from simple automation to critical process lines, delivering improved energy efficiency and longer tool life.
Product Information
Extended Description
R73G-4AK-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
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
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-4AK-RFG
Excelon Plus general purpose pressure regulator, 1/2 PTF, 0.3-4 bar, integrated gauge
R84G-4AK-RFN
Excelon Plus general purpose pressure regulator, 1/2 PTF, 0.3-4 bar, without gauge
Feature → Business Impact → Application: Inline or modular installation is enabled by the Excelon design, reducing installation time and enabling flexible machine layouts. This translates to faster line upgrades and lower capital expenditure for retrofits in automated assemblies. Application in factory floors where space is constrained or where regulators must be added to existing networks. Feature → Balanced valve design delivers stable downstream pressure with minimal pulsation, enhancing tool precision and cycle consistency. This reduces scrap and improves process reliability in high-speed pneumatic systems. Application in automated pick-and-place, clamping, and actuation lines where tight pressure control matters. Feature → Relieving capability protects downstream equipment during dead-end conditions, preventing pressure spikes and potential damage. This improves safety and reduces maintenance in emergency scenarios. Application in safety-critical lines and handoff points between processes. Feature → Push-to-lock adjusting knob with tamper-resistant accessory prevents unauthorized changes, supporting regulatory compliance and consistent performance. Application in multi-shift environments or regulated production areas. Feature → 1/2" PTF port with a 1/4" gauge port offers versatile integration with standard piping and monitoring setups, easing installation and diagnostics. Application in retrofit projects or new builds where standard components speed assembly. Feature → Specifications including 20 bar max inlet, 0.3–4 bar outlet, and 60 dm3/s flow deliver predictable performance under load, enabling precise process control. Application in general purpose compressed air systems across multiple industries. Feature → Compact Excelon housing uses diecast aluminium and zinc bonnet with nitrile elastomers for durability in industrial environments, supporting long service life and easier maintenance. Application in harsh manufacturing environments requiring robust construction and low maintenance.
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FAQs
The R73G-4AK-RFN supports inline or modular installation, enabling flexible layouts and faster retrofits. It uses a 1/2" PTF port with an optional gauge port configuration for monitoring, making it compatible with standard pneumatic piping and existing lines in automation and assembly environments.
This regulator provides an outlet adjustment of 0.3 to 4 bar (4 to 58 psi) with a maximum inlet pressure of 20 bar. The combination supports stable downstream pressure across typical shop air systems, aiding consistent actuation of pneumatic tools and valves in automated lines.
Yes. The Excelon design is specifically built for both inline and modular deployments, allowing easy integration into new builds or retrofits. Its compact form and compatible porting simplify installation in tight spaces and reduce project lead times for line upgrades.
The body uses diecast aluminium with a zinc bonnet and nitrile elastomer seals, while the adjusting knob is made from acetal resin. This combination delivers robust durability in industrial environments, resistance to oil-contaminated air, and extended service intervals when used in standard factory air networks.
The regulator features a push-to-lock knob and tamper-resistant accessory to prevent unauthorized adjustments, supporting stable setpoints across shifts. Regular checks of inlet pressure, outlet setting (0.3–4 bar), and downstream load ensure consistent performance and help maintain regulatory-compliant operation in regulated manufacturing environments.