Norgren R84G-3AK-RFN Valves & Flow Control - Relieving
Part Number: R84G-3AK-RFN
Quick Summary
Norgren R84G-3AK-RFN Excelon Plus pressure regulator provides precise compressed air control for automation lines. Engineers often wrestle with fluctuating supply pressures and hard-to-tune regulators in tight control panels. Certification details are not listed here; in practice, design reviews typically consider CE marking, RoHS compliance, and robust enclosure ratings to meet industrial standards. This Excelon Plus unit combines compact sizing with a modular design to reduce footprint while preserving performance, supporting efficient pneumatic systems. By pairing reliable adjustment knobs and a compact 3/8 PTF inlet with a 0.3–4 bar output, it delivers consistent performance across automation workflows. Its relieving design helps vent pressure safely during maintenance.
Product Information
Extended Description
R84G-3AK-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
3/8" PTF
Gauge Port
1/8" PTF
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
840100-01KIT
Excelon Plus Gauge Adaptor Kit - 1/8" PTF
840024-50KIT
Excelon Plus General Mounting Bracket
840068-51KIT
Excelon Plus Neck Mounting Bracket and Panel Nut
840014-51KIT
Excelon Plus Quikclamp
840014-52KIT
Excelon Plus Quikclamp with Bracket Assembly
FRLB84-KIT
Excelon Plus R84/B84 Elastomer Service Kit
Compact, modular Excelon Plus design reduces control-panel footprint and simplifies installation, while maintaining robust performance in OEM machinery. The 3/8" PTF inlet and 1/8" gauge port enable straightforward integration with standard pneumatic manifolds, improving monitoring confidence and throughput. The tamper-resistant knob protects against unapproved adjustments, delivering process stability and reduced downtime. With a 0.3–4 bar output range, operators achieve precise regulation across varying load conditions, cutting product variance and waste. Diecast aluminium body and Acetal knob provide a durable, light-weight solution suitable for demanding environments, while nitrile elastomer seals resist oil and moisture exposure. Compatibility with Excelon Plus mounting brackets and Quikclamp kits speeds installation and simplifies field service. Overall, this regulator supports uptime, repeatability, and scalable automation.
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FAQs
Begin with a clean, unobstructed mounting surface. Use the Excelon Plus General Mounting Bracket (840024-50KIT) or Neck Mounting Bracket and Panel Nut (840068-51KIT) to secure the regulator, aligning the inlet/outlet ports with your supply and exhaust lines. Tighten mounting screws evenly, connect the 3/8" PTF supply line to the inlet, and attach the 1/8" PTF gauge line if monitoring is required. Verify clearance for the knob and ensure the relieving outlet vents without obstruction. Finally, test pressure with a calibrated gauge before commissioning.
The R84G-3AK-RFN provides a maximum inlet pressure of 20 bar, with an adjustable outlet range of 0.3 to 4 bar (4 to 58 psi). It features a 3/8" PTF inlet and 1/8" PTF gauge port, a relieving regulator function, flow capacity of 125 dm3/s (265 scfm), and a compact 167 × 74 × 70 mm footprint with a 0.59 kg weight. Built for compressed air, it operates from -20 to 65 °C.
Yes, for automation and assembly environments requiring reliable, adjustable pressure control, this regulator can support pneumatic actuators and tooling. Its compact Excelon Plus design fits tight spaces, the reliving feature enhances safety during venting, and the wide 0.3–4 bar output range helps maintain consistent performance across variable loads typical in packaging and assembly lines.
The provided data does not list certifications. For compliant procurement, verify with the supplier whether the unit carries CE marking, RoHS compliance, and any industry-specific approvals or IP ratings relevant to your environment. Check the latest datasheet and the brochure for confirmation before purchase to ensure alignment with your regulatory and safety requirements.
For elastomer wear and sealing integrity, use the Excelon Plus Elastomer Service Kit FRLB84-KIT to refresh critical seals and gaskets. Regular maintenance includes inspecting the adjusting knob for wear, replacing nitrile elastomer seals as needed, and validating outlet pressure accuracy after preventive maintenance. Availability of mounting accessories can also simplify field servicing and minimize downtime.