Norgren R74G-4AK-RFG Excelon Pressure Regulator - Relieving

Part Number: R74G-4AK-RFG
Manufacturer
Norgren
Part number
R74G-4AK-RFG

Quick Summary

Norgren R74G-4AK-RFG Excelon pressure regulator delivers precise compressed air pressure control for automation systems. Fluctuating downstream pressure is a common pain point, leading to inconsistent tool performance and unintended downtime. In this family, verify CE compliance and, where required, SIL readiness or IP protection in the chosen variant. The unit’s inline or modular installation, balanced valve design, and relieving capability help protect downstream equipment during dead-ended events. Push-to-lock adjusting knob with tamper-resistant options strengthens security in high-activity environments. With compatible Mountings and Quikmount accessories, installation is faster and serviceability is simplified, reducing maintenance time and total cost of ownership while supporting scalable factory automation projects.

Product Information

Extended Description

R74G-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 ... 65 °C, -29 ... 149 °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
105 dm3/sec, 222 scfm
Materials - Adjusting Knob
Acetal resin
Materials - Body
Diecast aluminium
Materials - Bonnet
Diecast aluminium
Materials - Elastomers
Nitrile rubber
Range
R74G
Series
Excelon
Brand
IMI Norgren
4315-03
Quikmount pipe adapter
4324-50
'Universal' Bracket
4314-51
Quikclamp
4368-51
Neck Mounting Bracket
4314-52
Quikclamp with wall mounting bracket
4355-51
Tamper Resistant Cover and Wire
4348-89
Panel Mounting Nut
R74G-KITR
Service kit R74G
R84G-4AK-RFG
Excelon Plus general purpose pressure regulator, 1/2 PTF, 0.3-4 bar, integrated gauge
Feature: Inline or modular installation enables flexible deployment in existing pipelines and new lines, improving installation speed and reducing retrofit costs. Business Impact: Faster project delivery and lower total installed cost. Application: Suitable for both compact machines and larger production lines in automation environments. Feature: Balanced valve design provides stable, accurate pressure control under varying flow demands. Business Impact: Minimizes downstream fluctuations, extends tool life, and improves repeatability. Application: Robotics and pneumatic actuators in high-cycle applications. Feature: Relieving model capability reduces downstream pressure when the system is dead-ended. Business Impact: Enhanced safety and reduced risk of over-pressurization in fault conditions. Application: Systems with potential line dead-ends or rapid load changes. Feature: Gauge port and 0.3–4 bar adjustable outlet with 20 bar max inlet. Business Impact: Clear monitoring and precise setup for consistent performance, enabling predictable cycle times. Application: General purpose pneumatic regulation in production lines. Feature: Push-to-lock adjusting knob and tamper-resistant accessory options. Business Impact: Prevents unauthorized adjustments, ensuring process stability and compliance. Application: Environments requiring secure, maintainable settings. Feature: Durable construction with acetal knob and diecast aluminium body/bonnet, plus nitrile elastomer seals. Business Impact: Long service life in demanding factory environments with predictable maintenance. Application: Harsh manufacturing floors and high-usage stations. Feature: Broad compatibility with Excelon accessories (Quikmount, Quikclamp, universal bracket, etc.). Business Impact: Simplifies installation, reduces alignment errors, and speeds maintenance. Application: Modular installations and future scalability in automation plants.

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FAQs

The R74G-4AK-RFG supports in-line or modular installation, with options like Quikmount adapters (4315-03) and the 'Universal' bracket (4324-50) to simplify mounting. Align the port sizes to your piping, secure with appropriate fittings, and verify the gauge port connection for accurate monitoring.
Outlet pressure is adjustable from 0.3 to 4 bar (4 to 58 psi), with a maximum inlet pressure of 20 bar. This supports stable regulation across typical factory pneumatic circuits while maintaining a safe operating envelope.
Yes, this model is a relieving regulator and includes a gauge port (1/4"), enabling direct pressure monitoring. The knob is designed for a push-to-lock operation, aiding quick, secure adjustments in dynamic environments.
The regulator offers a push-to-lock adjusting knob and is compatible with tamper-resistant accessories (e.g., 4355-51 Tamper Resistant Cover and Wire), providing enhanced security and process stability in high-traffic areas.
Consider 4315-03 Quikmount pipe adapter, 4324-50 'Universal' Bracket, 4314-51 Quikclamp, and 4368-51 Neck Mounting Bracket for flexible mounting. These options simplify alignment, reduce vibration effects, and speed future maintenance or upgrades.