Norgren R84G-4GK-RFG Excelon Plus Regulator - Relieving
Part Number: R84G-4GK-RFG
Quick Summary
Norgren R84G-4GK-RFG Excelon Plus pressure regulator delivers precise downstream pressure control for compressed air in automation. In modern production lines, fluctuating pressure and unexpected leaks drive maintenance costs and reduce system performance. CE-compliant in European markets and built with a compact die-cast body, flush-mounted integrated gauge, and tamper-resistant knob. This combination supports quick setup, stable regulation, and predictable performance across automation lines while reducing field service time. Engineers appreciate the modular options and compact footprint that simplify installation in panel-mounted layouts. This combination translates to measurable ROI through reduced downtime and manageable life-cycle costs. Ideal for packaging, automation, and machining environments where stable pressure improves actuator response and part quality.
Product Information
Extended Description
R84G-4GK-RFG Norgren: Reduced weight and size | Flush mounted integrated gauge | 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
840055-01KIT
Padlock
840055-02KIT
Padlock Hasp
840048-89KIT
Excelon Plus Panel Nut
840073-01KIT
Excelon Plus Integrated Gauge, 10 bar
840024-50KIT
Excelon Plus General Mounting Bracket
840068-51KIT
Excelon Plus Neck Mounting Bracket and Panel Nut
840014-52KIT
Excelon Plus Quikclamp with Bracket Assembly
840014-51KIT
Excelon Plus Quikclamp
FRLB84-KIT
Excelon Plus R84/B84 Elastomer Service Kit
Feature: Integrated, flush-mounted gauge provides immediate visibility of downstream pressure. Business Impact: Reduces alarm-driven downtime and accelerates troubleshooting, improving line uptime. Application: Packaging and assembly cells where quick readouts are critical for line balance. Feature: Push-to-lock adjusting knob with tamper-resistant design. Business Impact: Minimizes accidental re-sets and maintains calibrated setpoints under vibration in robotic cells. Application: CNC machining and palletizing lines requiring stable setpoints. Feature: Relieving regulator with 0.3–4 bar outlet range and 20 bar max inlet. Business Impact: Safe venting of excess pressure, protecting actuators and hoses while maintaining consistent performance. Application: High-demand automation circuits prone to pressure spikes. Feature: Lightweight die-cast aluminum body and compact dimensions (Height 167 mm, Length 74 mm, Width 70 mm). Business Impact: Easier installation in tight panels and reduced mounting load on enclosures. Application: Panel-mounted regulators in compact automation cabinets. Feature: Acetal adjusting knob, nitrile elastomers, and metal body materials. Business Impact: Chemical compatibility and long service life in pneumatic networks. Application: Harsh factory environments with moisture and oil exposure. Feature: Accessories and service options (padlock, panel nuts, gauge kits, mounting brackets, elastomer service kit). Business Impact: Streamlines procurement, maintenance planning, and uptime through modular replacement parts. Application: Retrofit and upgrade projects across existing R84G installations.
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FAQs
The regulator handles compressed air with a G1/2 port size and Rc1/8 gauge port for monitoring. Media is specified as compressed air, aligning with standard plant air supplies. Operating temperature ranges from -20 to 65 °C, ensuring compatibility with typical pneumatic installations while maintaining accuracy in varied environments.
Install the R84G-4GK-RFG in a panel using the Excelon mounting hardware, such as the 840024-50KIT General Mounting Bracket and compatible panel nuts. Position the regulator with the integrated gauge accessible for quick pressure checks, and secure using the tamper-resistant knob to prevent inadvertent adjustments in vibration-prone environments.
Outlet pressure is adjustable from 0.3 to 4 bar, while the maximum inlet pressure is 20 bar. This combination supports stable downstream regulation for automated lines, with adequate headroom to absorb short-term supply fluctuations without compromising actuator performance.
Yes, the R84G-4GK-RFG is a relieving type regulator. It safely vents excess pressure to atmosphere, protecting downstream components and helping maintain consistent operating conditions across demanding pneumatic circuits in packaging, automation, and machining applications.
Available accessories include the FRLB84-KIT elastomer service kit for diaphragm and elastomer maintenance, 840024-50KIT Excelon Plus General Mounting Bracket, 840073-01KIT Excelon Plus Integrated Gauge, 10 bar, and 840055-01KIT Padlock with 840055-02KIT Padlock Hasp. These options simplify upgrades, secure installations, and streamline future servicing.