Norgren R73G-4AK-RSG Pressure Regulator - Relieving
Part Number: R73G-4AK-RSG
Quick Summary
Norgren R73G-4AK-RSG pressure regulator provides precise compressed air control for automation lines and machine tools. In busy manufacturing environments, downstream pressure can drift during start-stop cycles, causing actuators to underperform or cycle irregularly. This Excelon regulator supports inline or modular installation and uses a balanced valve design to minimize hysteresis and pulsations, improving consistency. While some installations rely on fixed regulators that require frequent readjustment, the R73G-4AK-RSG offers a knob-adjustable range with gauge access for quick verification. Typical deployments reflect common industry needs for CE-style process compliance and IP-rated protection across the Excelon family, with SIL-ready configurations available where safety interlocks are essential. By reducing setpoint drift and enabling proactive monitoring, it helps boost uptime and energy efficiency for OEMs and end users alike.
Product Information
Extended Description
R73G-4AK-RSG 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
0.7 ... 17 bar, 10 ... 247 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
4315-03
Quikmount pipe adapter
4461-50
Neck Mounting Bracket
4455-51
Tamper Resistant Cover and Wire
5191-88
Mounting nut
4314-51
Quikclamp
4314-52
Quikclamp with wall mounting bracket
4424-50
'Universal' Bracket
R73G-KITR
Service kit R73G
Feature: Excelon design allows in-line or modular installation. Business Impact: Simplifies retrofits and reduces cabinet space, cutting installation time and project costs. Application: Ideal for automation lines and machine-tool retrofits where space is at a premium. Feature: Balanced valve design for stable pressure control. Business Impact: Minimizes flow-induced fluctuations, improving actuator performance and cycle consistency. Application: Critical on fast-moving cylinders and precision grippers in high-cycle environments. Feature: Relieving model to protect downstream pressure during dead-end events. Business Impact: Reduces risk of overpressure, extending component life and reducing leak-related energy waste. Application: Downstream circuits in automated assemblies and locked-in tooling. Feature: Push to lock adjusting knob with tamper-resistant accessory. Business Impact: Prevents accidental setpoint changes, lowering maintenance interventions and ensuring regulatory compliance. Application: Field service and panel installations in harsh industrial settings. Feature: Gauge port and robust materials for reliability. Business Impact: Enables quick diagnostics and long-term durability in demanding environments. Application: Monitoring and service in inline installations with 1/2" PTF inlet and 1/4" PTF gauge port; compatible with common Norgren mounting accessories.
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FAQs
The R73G-4AK-RSG supports both inline and modular installation methods, enabling flexible mounting in existing panels or compact cabinet layouts. Compatibility with Norgren accessories such as Quikmount and mounting brackets simplifies retrofits and reduces installation time, improving overall project efficiency and reducing downtimes during upgrades.
Key specs include 1/2" PTF inlet, 1/4" PTF gauge port, maximum inlet pressure of 20 bar, and adjustable outlet range from 0.7 to 17 bar (10 to 247 psi). The regulator delivers a flow of 60 dm3/sec (127 scfm), making it suitable for mid-range pneumatic circuits in automation and tooling applications.
Yes. The R73G-4AK-RSG is a relifting relieving model designed to protect downstream components by reducing downstream pressure when a dead-end condition occurs. This feature mitigates overpressure risk and supports safer operation of downstream actuators and valves in dynamic automation cycles.
This model supports various mountings such as Quikmount pipe adapters (4315-03) and neck mounting brackets (4461-50), with additional accessories like tamper-resistant covers (4455-51) and mounting nuts (5191-88). Service kits, such as R73G-KITR, provide maintenance convenience to extend life and reduce total cost of ownership.
With a gauge port for direct pressure monitoring and a knob-adjustable setpoint, technicians can verify outlet pressure quickly and adjust as process needs evolve. The balanced valve design minimizes drift, while the tamper-resistant knob reduces unauthorized changes, delivering predictable performance and lower maintenance frequency in regulated environments.