Norgren R84G-4AT-RFG Pressure Regulator - 0.3-4 bar
Part Number: R84G-4AT-RFG
Quick Summary
Norgren R84G-4AT-RFG pressure regulator delivers stable compressed air pressure for general-purpose control in manufacturing automation. When line pressure fluctuates, actuators stall, cycles slow, and product quality suffers. The Excelon Plus family is designed to support CE-compliant safety and rugged performance, with SIL-ready options and IP-rated variants available across the range. For engineers and procurement teams, this regulator combines a compact form factor, a flush-mounted integrated gauge, and a modular mounting system to speed installation and reduce service time while maintaining reliable pressure regulation.
Product Information
Extended Description
R84G-4AT-RFG Norgren: Reduced weight and size | Flush mounted integrated gauge | A flexible modular system | T-bar adjustment
Medium
Compressed air
Operating Temperature
-20 ... 65 °C, -4 ... 149 °F
Port Size
1/2" PTF
Gauge Port
1/8" PTF
Adjustment
T-bar
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
Zinc plated steel
Materials - Body
Diecast aluminium
Materials - Bonnet
POM
Materials - Elastomers
Nitrile rubber
Dimensions - Height
186 mm
Dimensions - Length
70 mm
Dimensions - Width
74 mm
Weight
0.79 kg
Country of Origin
United Kingdom
Range
R84G
Series
Excelon Plus
Brand
IMI Norgren
840048-89KIT
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840073-01KIT
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840024-50KIT
Excelon Plus General Mounting Bracket
840014-51KIT
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840014-52KIT
Excelon Plus Quikclamp with Bracket Assembly
840068-51KIT
Excelon Plus Neck Mounting Bracket and Panel Nut
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Excelon Plus R84/B84 Elastomer Service Kit
Feature: Integrated flush-mounted gauge and compact body. Benefit: Simplifies pressure verification and reduces panel space, accelerating commissioning and maintenance in tight cabinets. Application: General automation circuits where space is at a premium. Feature: T-bar adjustment. Benefit: Precise setpoint control with repeatable output in the 0.3–4 bar range, improving actuation consistency. Application: Pneumatic valves and cylinders on packaging lines. Feature: 1/2" PTF inlet and 1/8" gauge port. Benefit: Easy integration with standard fittings and quick pressure feedback without extra adapters. Application: Retrofit projects or new builds using common pneumatic hardware. Feature: Relieving design and 20 bar max inlet. Benefit: Protects downstream components and reduces system leaks under pressure spikes. Application: High-throughput lines with transient demand. Feature: Diecast aluminium body with nitrile elastomer seals and POM bonnet. Benefit: Robust, durable construction suitable for industrial environments, minimizing maintenance. Application: Continuous operation in manufacturing cells. Feature: Modular mounting and compatibility with Excelon Plus kits. Benefit: Flexible installation options (panel, neck, or bracket mounting) that speed setup and service. Application: OEMs deploying standardized regulators across lines.
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FAQs
The R84G-4AT-RFG is designed for use with Excelon Plus mounting accessories such as the 840024-50KIT General Mounting Bracket and the 840073-01KIT Integrated Gauge kit. For a secure panel install, attach the regulator to the mounting bracket, align with the gauge port, and ensure 1/2" PTF inlet and 1/8" gauge port connections are seated with standard pneumatic fittings. Access is improved by the compact footprint (186 mm height, 70 mm length, 74 mm width) and the relieving function reduces extra external components.
The regulator provides a 0.3–4 bar adjustable output with a maximum inlet pressure of 20 bar. This combination supports stable actuation for most general pneumatic circuits, while the relieving design helps prevent overpressure in transient events. Typical flow is 125 dm3/sec (265 scfm), enabling rapid response in automation loops without sacrificing regulation accuracy.
Yes. The relieving pressure regulator design stabilizes pressure despite demand variations, reducing cycle time variability and improving repeatability in packaging and assembly lines. Its compact Excelon Plus platform, integrated gauge, and modular mounting options simplify installation in confined spaces and support quick field maintenance, which is valuable for high-mix, high-velocity lines.
The Excelon Plus family is designed to meet common industry standards for pneumatic components, with CE marking and compatibility with standard safety practices in automated environments. SIL-ready options exist within the range, and the design supports robust operation in harsh industrial settings, providing confidence for regulated or safety-critical applications when configured accordingly.
For long-term reliability, consider Elastomer service kits such as FRLB84-KIT and the Excelon Plus elastomer kit options. Regular diaphragms, seals, and O-rings replacement reduce leakage and maintain setpoint accuracy. The regulator’s modular mounting and integrated gauge reduce labor time during calibration, contributing to lower maintenance costs and faster ROI in high-usage environments.