Norgren R74G-4GT-NSN Pressure Regulator - Excelon
Part Number: R74G-4GT-NSN
Quick Summary
Norgren R74G-4GT-NSN pressure regulator provides precise compressed air control for general purpose automation. Fluctuating downstream pressure can cause tool inconsistency and wasted energy in factory lines, but this regulator stabilizes output. The Excelon family carries CE compliance and is designed for -34 to 80°C operation with inline or modular installation. A balanced valve design, adjustable by T-bar, ensures reliable performance across a range of applications, while compatibility with common mounting and accessory options supports scalable, cost-efficient pneumatic systems.
Product Information
Extended Description
R74G-4GT-NSN 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 | Adjustment by T-bar
Medium
Compressed air
Operating Temperature
-34 ... 80 °C, -29 ... 176 °F
Port Size
G1/2
Gauge Port
Rc1/8
Adjustment
T-bar
Maximum Inlet Pressure
20 bar
Outlet Pressure Adjustment
0.7 ... 17 bar, 10 ... 247 psi
Relieving / Non Relieving
Non-relieving
Flow
105 dm3/sec, 222 scfm
Materials - Adjusting Knob
Plated steel
Materials - Body
Diecast aluminium
Materials - Bonnet
Diecast aluminium
Materials - Elastomers
Nitrile rubber
Range
R74G
Series
Excelon
Brand
IMI Norgren
T74T-4GA-P1N
Excelon 3/2 modular system shut-off valve, G1/2
4316-52
Porting Block - Excelon 73/74 Series, Connection G1/4"
4315-11
Quikmount pipe adapter
4324-50
'Universal' Bracket
4368-51
Neck Mounting Bracket
4314-51
Quikclamp
4314-52
Quikclamp with wall mounting bracket
4355-51
Tamper Resistant Cover and Wire
4348-89
Panel Mounting Nut
Excelon design allows in-line or modular installation, reducing installation time and enabling retrofit projects across existing lines, which lowers downtime and total cost of ownership. Balanced valve design delivers stable downstream pressure, improving tool consistency and cycle accuracy in automation cells and CNC/robotic systems. Non-relieving configuration provides predictable behavior in dead-end conditions, enhancing system safety and reducing unexpected venting in controlled environments. G1/2 port size with Rc1/8 gauge port ensures straightforward integration with standard fittings and monitoring equipment, streamlining controls and maintenance. The -34 to 80°C operating range and 20 bar maximum inlet pressure accommodate diverse shop conditions and equipment, while the 0.7 to 17 bar outlet range supports multiple process setpoints. Durable diecast aluminium body and bonnet with nitrile elastomer seals offer long service life in harsh industrial environments, and adjustment by T-bar allows fast, precise field calibration. Accessories like Excelon 3/2 shut-off valves, porting blocks, and mounting brackets extend installation options and simplify machine integration.
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FAQs
To install, mount the regulator using compatible brackets (e.g., 4324-50 Universal Bracket or 4368-51 Neck Mounting Bracket) and connect the G1/2 inlet/outlet ports with standard pneumatic fittings. Attach the Rc1/8 gauge port for pressure monitoring, then adjust the outlet pressure with the T-bar while the system is depressurized. Verify max inlet pressure is not exceeded (20 bar) and perform a leak check before commissioning.
Key specs include medium: compressed air; port size: G1/2; gauge port: Rc1/8; adjustment: T-bar; maximum inlet pressure: 20 bar; outlet pressure range: 0.7 to 17 bar (10 to 247 psi); relief: non-relieving; flow: 105 dm3/s (222 scfm); operating range: -34 to 80°C; materials: diecast aluminium body and bonnet, plated steel adjusting knob, nitrile elastomer seals.
Yes. The Excelon regulator is designed for inline or modular installation in general automation environments, offering balanced valve control for consistent pressure, compatibility with common mounting options, and a robust construction suitable for factory floors. Its non-relieving configuration is ideal for standard pneumatic circuits where venting is undesired, helping to maintain stable tool performance and energy efficiency.
The product aligns with CE compliance requirements typical for European safety and performance standards in pneumatic equipment. While specific SIL or IP ratings are not listed for this exact model, the Excelon family is designed for reliable industrial use with attention to safety, durability, and compatibility across inline and modular installations. Always refer to the datasheet for the exact certification scope for your region and application.
Maintenance is minimized by a durable diecast aluminium body, nitrile elastomer seals, and a straightforward T-bar adjustment for quick field calibration. The stable pressure control reduces tool wear and cycle times, delivering energy savings and lower downtime. Accessory compatibility (shut-off valves, porting blocks, mounting brackets) supports scalable upgrades and predictable lifecycle costs in mature pneumatic networks.