Norgren R73G-4AK-RFG Excelon pressure regulator - Relieving
Part Number: R73G-4AK-RFG
Quick Summary
The Norgren R73G-4AK-RFG Excelon pressure regulator delivers precise downstream pressure control for compressed air in industrial automation. In dynamic production environments, fluctuating downstream pressure can cause tool wear, inconsistent results, and wasted material. Note that formal approvals such as CE marking, SIL ratings, and IP-rated enclosures vary by model and region; consult the accompanying datasheet for the exact certifications and compliance statements. Designed for inline or modular installation, this regulator combines reliable control with tamper-resistant adjustment, offering measurable business value through improved uptime, safer operation, and streamlined maintenance. By optimizing pressure consistency and enabling easy integration with existing piping, it supports cost reduction and productivity gains across automated lines.
Product Information
Extended Description
R73G-4AK-RFG 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
Feature: Inline or modular installation capability. Business Impact: Simplifies integration with existing pneumatic circuits and reduces installation time, cutting commissioning costs. Application: Suitable for retrofit projects or new lines where space and layout vary. Feature: Balanced valve design for stable pressure control. Business Impact: Minimizes fluctuations, improving tool accuracy and reducing waste in high-precision applications. Application: Automated packaging and assembly equipment. Feature: Relieving model to protect downstream when the system dead-ends. Business Impact: Eliminates pressure spikes and potential damage, extending component life and reducing leak-related downtime. Application: Systems prone to dead-end events or sudden stops. Feature: Push-to-lock knob with tamper-resistant accessory. Business Impact: Maintains setpoints, lowers the risk of unauthorized adjustments, and reduces recalibration frequency. Application: Environments with operator turnover or vibration-prone machinery. Feature: Gauge port for direct monitoring and quick verification. Business Impact: Enables rapid on-site verification of outlet pressure, decreasing diagnostic time. Application: Routine maintenance and system audits. Feature: 1/2" PTF inlet and 1/4" PTF gauge port; ranges 0.3–4 bar with max 20 bar inlet. Business Impact: Provides standard fittings compatibility and broad operating range, supporting scalable pneumatic networks. Application: General purpose pneumatic systems in manufacturing and process automation. Feature: Durable materials — die-cast aluminium body, zinc bonnet, acetal knob, nitrile elastomers. Business Impact: Enhances durability in harsh environments and ensures long service life with chemical resistance. Application: Industrial environments with exposure to oils and humidity. Feature: Excelon family with range R73G and inline relief capability. Business Impact: Ensures predictable performance across multiple stations and supports replacement part commonality. Application: Multi-station pneumatic plants and lines requiring uniform regulators.
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FAQs
The R73G-4AK-RFG supports both inline and modular installation with standard 1/2 in PTF inlet fittings and a 1/4 in gauge port. For inline setups, connect directly to the main air line using compatible PTF fittings. For modular installations, mount the regulator near the control valve bank to minimize pressure drop and installation complexity. Always verify port orientation and use appropriate seals to prevent leaks.
This regulator provides an adjustable outlet pressure range of 0.3 to 4 bar (4 to 58 psi) with a maximum inlet pressure of 20 bar. The balance valve design maintains stable downstream pressure across typical operating conditions, helping ensure consistent tool performance in automation tasks.
Yes, the R73G-4AK-RFG is a relieving regulator. Relieving models allow downstream pressure to be reduced when the system experiences dead-end conditions or flow cessation, protecting downstream equipment and preventing pressure buildup that could cause faults or leaks. This feature enhances safety and system robustness in automated pneumatic networks.
The unit uses a 1/2" PTF inlet port and a 1/4" PTF gauge port, enabling straightforward plumbing with standard pneumatic components and easy on-site pressure monitoring. The gauge port allows direct connection of gauges or test instruments to verify outlet pressure during commissioning and maintenance.
The R73G-4AK-RFG features a die-cast aluminium body, zinc bonnet, acetal resin adjusting knob, and nitrile rubber elastomers, delivering durability and chemical resistance suitable for many manufacturing environments. Operating temperature ranges from -34 to 80 °C, and the design supports reliable operation under continuous vibration and fluctuating load conditions common in automation plants.