Norgren R84G-4GK-RFN Pressure Regulator - Relieving
Part Number: R84G-4GK-RFN
Quick Summary
R84G-4GK-RFN pressure regulator delivers precise compressed-air control for automated machinery and process lines. Fluctuating supply pressures can cause inconsistent tool performance, increased cycle times, and unexpected downtime, compromising system reliability. This Excelon Plus model aligns with industry standards and provides a robust relief function for safer operation in demanding environments. Its compact footprint and modular design support quick installation and easy field adjustments, helping to reduce commissioning time and ongoing maintenance costs. For broad compatibility, it integrates with common accessories and mounting options within the Norgren Excelon Plus ecosystem, delivering tangible value across panel builds and machine retrofits.
Product Information
Extended Description
R84G-4GK-RFN Norgren: Reduced weight and size | A flexible modular system | Push to lock adjusting knob with built in tamper resistant feature
Medium
Compressed air
Operating Temperature
-20 ... 65 °C, -4 ... 149 °F
Port Size
G1/2
Gauge Port
Rc1/8
Adjustment
Knob
Maximum Inlet Pressure
20 bar
Outlet Pressure Adjustment
0.3 ... 4 bar, 4 ... 58 psi
Relieving / Non Relieving
Relieving
Flow
125 dm3/sec, 265 scfm
Materials - Adjusting Knob
Acetal
Materials - Body
Diecast aluminium
Materials - Bonnet
POM
Materials - Elastomers
Nitrile rubber
Dimensions - Height
167 mm
Dimensions - Length
74 mm
Dimensions - Width
70 mm
Weight
0.59 kg
Country of Origin
United Kingdom
Range
R84G
Series
Excelon Plus
Brand
IMI Norgren
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Padlock Hasp
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Feature: Push-to-lock adjusting knob with built-in tamper-resistant feature → Business Impact: Minimizes accidental setpoint changes in busy production areas, preserving regulator accuracy and reducing rework. Application: Panel-mounted regulators in high-traffic automation cells benefit from stable pressure control without operator intervention. Long-tail keywords: tamper-resistant knob, pressure regulator adjustment, safe setpoint. Feature: Reduced weight and size with a flexible modular system → Business Impact: Easier installation in space-constrained panels, lower freight costs, and simpler retrofit projects. Application: Compact automation racks and retrofit panels gain improved serviceability and faster changeovers. Long-tail keywords: lightweight regulator, modular pressure regulator, compact pneumatic components. Feature: G1/2 port size with Rc1/8 gauge port and relieving function → Business Impact: Broad compatibility with existing piping and monitoring, reliable relief to prevent overpressure events, and accurate outlet control. Application: Robotics tooling and clamp systems where regulated downstream pressure is critical. Long-tail keywords: G1/2 regulator, gauge port Rc1/8, relieving regulator. Feature: Diecast aluminium body with Acetal knob and Nitrile elastomers → Business Impact: Durable construction with good chemical resistance ensures long life in challenging environments, reducing replacement cycles. Application: Industrial facilities with oil-free compressed air and challenging climates. Long-tail keywords: diecast aluminium body, acetall knob, nitrile elastomer seals. Feature: Operating range -20 to 65 °C and max inlet 20 bar → Business Impact: Reliable performance across factory ambient conditions and diverse line pressures, supporting uptime and process stability. Application: Global manufacturing environments with varying temperatures. Long-tail keywords: wide operating temperature, high-inlet pressure tolerance, Excelon Plus durability.
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FAQs
To install the R84G-4GK-RFN, mount the regulator in a rigid panel or manifold using the G1/2 port with Rc1/8 gauge port for monitoring. Ensure clean, dry air and proper alignment to prevent leaks. The knob is push-to-lock for secure adjustment, reducing drift during operation. Consider using the Excelon Plus mounting kits for faster setup.
This regulator provides an outlet range of 0.3 to 4 bar with a maximum inlet pressure of 20 bar. The relieving design protects downstream components from overpressure, improving safety and tool life. Performance remains stable across the stated temperature range of -20 to 65 °C, making it suitable for varied production environments.
Yes, it aligns with the Excelon Plus ecosystem, supporting compatible gauges, panels, and mounting accessories such as Quikclamp kits and gauge adaptor kits. This compatibility enables quick upgrades, easier maintenance, and scalable installations across multiple stations, minimizing custom fabrication and expediting commissioning.
Certification specifics should be verified in the official datasheet for this model. The Excelon Plus line commonly references CE marking and suitable enclosure ratings, with SIL considerations defined where applicable. Always confirm current certifications with product documentation to ensure regulatory compliance for your region and application.
Maintenance benefits come from a tamper-resistant knob, durable diecast aluminium body, and elastomer seals that resist wear in harsh environments. These features reduce setpoint drift, prevent unintended adjustments, and lower downtime due to regulator failures. Over time, this translates to improved process stability, fewer tool mis-settings, and a favorable return on investment through productivity gains.