Norgren R73G-3AK-RFN Excelon Pressure Regulator - Relieving

Part Number: R73G-3AK-RFN
Manufacturer
Norgren
Part number
R73G-3AK-RFN

Quick Summary

Norgren R73G-3AK-RFN Excelon pressure regulator is a compact, general purpose device for precise downstream pressure control in compressed air systems. Many projects struggle with pressure fluctuations that cause actuator jitter, wasted energy, and premature wear; this regulator stabilizes output with a balanced valve design. Certification details should be confirmed in the datasheet, but the Excelon family commonly aligns with CE-style safety and environment standards, while ensuring reliable operation. Key attributes include inline or modular installation, a push-to-lock knob with tamper-resistant accessory, and a relieving design that reduces downstream pressure when the system is dead-ended, delivering lower downtime and lifecycle costs.

Product Information

Extended Description

R73G-3AK-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
3/8" 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-3AK-RFG
Excelon Plus general purpose pressure regulator, 3/8 PTF, 0.3-4 bar, integrated gauge
R84G-3AK-RFN
Excelon Plus general purpose pressure regulator, 3/8 PTF, 0.3-4 bar, without gauge
Feature: Excelon general purpose regulator uses a balanced valve design to minimize downstream pressure bias. Business Impact: Delivers precise, repeatable outlet pressure with reduced fluctuations, improving cycle consistency and reducing wear on downstream devices. Application: Ideal for pneumatic automation, packaging machinery, and automated lines where stable pressure is critical. Feature: Relieving capability allows automatic pressure reduction if the circuit becomes dead-ended. Business Impact: Prevents over-pressurization, lowers energy consumption by avoiding unnecessary bleed, and reduces noise and wear. Application: Valuable in systems with dynamic loads or frequent stop/start sequences. Feature: 3/8" PTF ports with a 1/4" gauge port provide flexible connections. Business Impact: Simplifies integration with existing tubing and sensing hardware, shortening installation time and enabling quick diagnostics. Application: Common in pneumatic manifolds and control banks. Feature: Push-to-lock adjusting knob with tamper resistant accessory enhances setting security. Business Impact: Maintains stable operation in busy environments and supports regulatory traceability. Application: Production floors where unauthorized changes must be prevented. Feature: Durable construction with a die-cast aluminium body, zinc bonnet, and nitrile elastomer seals. Business Impact: Delivers reliable service in harsh environments, reducing maintenance downtime and replacement costs. Application: Broad industrial use in manufacturing, robotics, and packaging lines. Feature: Specification set including operating range 0.3–4 bar, maximum inlet 20 bar, and flow 60 dm3/s (127 scfm). Business Impact: Enables precise control across a wide range of applications while maintaining efficiency. Application: Suitable for inline process lines and automated tooling where consistent pressure is essential.

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FAQs

The regulator uses 3/8" PTF ports for the main flow and includes a 1/4" PTF gauge port for monitoring. It supports inline installation or modular mounting, allowing flexible placement in compact automation layouts and enabling easier retrofits in existing lines.
Outlet pressure is adjustable from 0.3 to 4 bar (4 to 58 psi), while the maximum inlet pressure is 20 bar. This combination provides a broad operating window suitable for many pneumatic circuits without over-stressing downstream components.
Yes. The R73G-3AK-RFN is a relieving model that reduces downstream pressure when the system is dead-ended, helping protect equipment from over-pressurization and reducing leakage and noise in such conditions.
Specific certification levels (such as CE, SIL, or IP ratings) should be confirmed in the official datasheet. The Excelon family is designed to align with relevant safety and quality standards, but verify exact certificates for your regulatory needs from the datasheet.
Key ROI factors include the tamper-resistant push-to-lock knob to prevent drift, inline/modular installation to reduce commissioning time, and a robust die-cast aluminium body with nitrile seals for longevity. Routine checks of pressure settings and a quick-diagnostic gauge port inspection help sustain performance and reduce downtime.