Norgren R73G-4AK-RMN Excelon regulator - Relieving
Part Number: R73G-4AK-RMN
Quick Summary
Norgren R73G-4AK-RMN Excelon regulator provides precise air pressure control for industrial pneumatic systems. Engineers often face pressure drift when lines dead-end or demand changes disrupt tool performance. For regulated environments, CE compliance, SIL safety interfaces, and IP-rated enclosures are commonly pursued to ensure safety and reliability. The model offers a 0.3–10 bar outlet range, up to 20 bar maximum inlet, and supports inline or modular installation for easy retrofits. With a balanced valve design, tamper-resistant knob, and relieving function, it promotes stable operation and reduces maintenance costs across automation applications.
Product Information
Extended Description
R73G-4AK-RMN 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 ... 10 bar, 4 ... 145 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-RMN
Excelon Plus general purpose pressure regulator, 1/2 PTF, 0.3-10 bar, without gauge
R84G-4AK-RMG
Excelon Plus general purpose pressure regulator, 1/2 PTF, 0.3-10 bar, integrated gauge
Balanced valve design minimizes bore bias and pressure chatter, delivering stable outlet pressure which reduces downstream fluctuations and improves actuator performance in automated lines. This translates to lower energy use and longer tool life in production cells where consistent pneumatic power is critical. Inline or modular installation options simplify retrofits and new builds, reducing commissioning time and downtime, while maintaining compatibility with existing manifolds and future scalability for mass production. The relieving model actively lowers downstream pressure when lines become dead-ended, enhancing safety and protecting costly actuators in packaging and handling zones. With a 1/2" PTF port and a 1/4" gauge port, the regulator provides flexible connections and straightforward field adjustments, supported by a tamper-resistant knob for environments with high vibration or operator turnover. Durable diecast aluminium bodies, zinc bonnets, and nitrile elastomer seals deliver long service life in harsh factory floors, helping maintenance teams reduce spare parts stock and unplanned outages. Operating from -34 to 80 °C and delivering up to 60 dm3/sec flow, this Excelon regulator stays reliable across diverse automation installations, including high-cycle lines and complex multi-branch circuits, while keeping outlet pressure tightly controlled and responsive to demand.
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FAQs
To install, thread the 1/2 inch PTF port into the host line with appropriate sealing (PTFE tape or sealant compatible with pneumatic systems). Ensure clean, dry air supply and verify that the regulator is mounted in the correct orientation for proper relief and flow. Use the gauge port only if a pressure measurement is required, and secure the tamper-resistant knob after adjustment to prevent accidental changes. Check for leaks after commissioning and confirm outlet pressure is within the 0.3–10 bar range for stable operation.
The R73G-4AK-RMN provides an adjustable outlet pressure from 0.3 to 10 bar and supports up to a 20 bar inlet. As a relieving regulator, it can reduce downstream pressure automatically if the system is dead-ended or experiencing an overpressure condition, protecting downstream equipment and improving safety. This behavior is beneficial in packaging lines and automation cells where pressure spikes can occur during cycle transitions.
Yes, with a flow capacity of approximately 60 dm3/sec (127 scfm) and a 1/2" PTF port, this regulator supports high-demand circuits common in packaging and automation. Its balanced valve design minimizes pressure fluctuations under varying load, enabling consistent cylinder speed and repeatable actuator response. For peak-demand scenarios, ensure the upstream supply can maintain the 20 bar inlet pressure without excessive pressure drop.
In practice, industrial users often look for CE compliance, SIL safety integration options, and robust enclosure protection as part of their safety and regulatory programs. While this model is designed to align with common industry standards for safety and reliability, always verify the exact certifications on the datasheet and with your procurement team to confirm suitability for your specific regulatory environment.
Maintenance benefits stem from the regulator’s robust materials (diecast aluminium body, zinc bonnet, nitrile elastomer seals) and tamper-resistant adjustment, which reduce unplanned adjustments and part failures. The relieving feature minimizes downstream overpressure risks, potentially lowering downtime and repair costs in high-cycle automation lines. Expect lower energy consumption due to stable pressure control and fewer regulator replacements over the life of the installation, contributing to a favorable total cost of ownership.