Norgren R74G-3GT-RSN Pressure Regulator - Excelon Relieving
Part Number: R74G-3GT-RSN
Quick Summary
Norgren R74G-3GT-RSN is a general purpose pressure regulator for compressed air systems, delivering precise downstream pressure control. Fluctuating supply pressures and dead-ended lines in automated cells can cause inconsistent actuation and increased energy use. Note: Certification details are not listed in this data, but Excelon regulators commonly meet CE requirements and robust industrial reliability, with SIL-rated variants available in related models. The combination of inline or modular installation and a user-friendly T-bar adjustment supports fast deployment and predictable performance, delivering business value through reduced downtime and stable production pressures. This makes it suitable for diverse industries including packaging, automotive, and general automation where consistent air pressure is critical.
Product Information
Extended Description
R74G-3GT-RSN 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
G3/8
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
Relieving
Flow
105 dm3/sec, 222 scfm
Materials - Adjusting Knob
Plated steel
Materials - Body
Diecast aluminium
Materials - Bonnet
Diecast aluminium
Materials - Elastomers
Nitrile rubber
Dimensions - Height
74 mm
Dimensions - Length
194 mm
Dimensions - Width
80 mm
Weight
0.8 kg
Country of Origin
Mexico
Range
R74G
Series
Excelon
Brand
IMI Norgren
T74T-3GA-P1N
Excelon 3/2 modular system shut-off valve, G3/8
4316-52
Porting Block - Excelon 73/74 Series, Connection G1/4"
4315-10
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
R74G-KITR
Service kit R74G
R84G-3GT-RSN
Excelon Plus general purpose pressure regulator, G3/8, 0.7-17 bar, without gauge
R84G-3GT-RSG
Excelon Plus general purpose pressure regulator, G3/8, 0.7-17 bar, integrated gauge
Balanced valve design delivers optimum pressure control, reducing downstream fluctuations and improving actuator response. This translates to smoother regulation and extended component life in fast-moving lines. Use in inline or modular installation within compressed air networks to simplify retrofits and minimize cross-connection risk. Relieving regulation reduces downstream pressure when the system is dead-ended, preventing over-pressurization and protecting downstream components. The result is safer operation, reduced unplanned downtime, and fewer spares used to manage pressure spikes. It's ideal for dead-ended lines in automation cells, packaging equipment, and palletizing stations where fault tolerance matters. G3/8 port size with Rc1/8 gauge port allows straightforward integration with common manifolds and monitoring devices. The combination supports fast installation and reliable pressure measurement, cutting commissioning time in half in some setups. Use with Excelon 73/74 series accessories for clean piping layouts and neat, serviceable installations. With an outlet range of 0.7–17 bar and a 20 bar maximum inlet, the regulator covers a broad spectrum of plant air systems without requiring multiple SKUs. This flexibility reduces inventory and simplifies changeovers when process requirements shift. Suitable for variable-load lines, packaging lines, and automation cells that demand quick, repeatable setpoints. Excelon construction uses a diecast aluminium body and bonnet with nitrile elastomer seals, delivering durability in tough environments. The design tolerates routine cycling, lubricants, and temperature swings (-34 to 80 °C), supporting predictable maintenance. Choose this regulator for long service life in harsh manufacturing floors and high-cycle applications. T-bar adjustment provides precise, repeatable outlet pressure settings, enabling quick field calibration and rebalancing after maintenance. The compact form and modular mounting options support rapid deployment in existing plants and new builds. For ongoing reliability, pair with the R74G service kit (R74G-KITR) and compatible 4315-10, 4324-50, or 4314-xx Mountings.
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FAQs
Begin with the G3/8 inlet/outlet piping, then mount using compatible Excelon brackets or mounting accessories such as the Universal Bracket 4324-50 or Quikclamp 4314-51/52 to position the regulator securely. Attach the Rc1/8 gauge port for monitoring and pair with a suitable porting block if needed. Verify clearance for easy adjustment via the T-bar and ensure upstream lubrication compatibility.
The R74G-3GT-RSN provides an outlet pressure adjustment from 0.7 to 17 bar with a maximum inlet pressure of 20 bar. It is a relieving regulator, which means it relieves downstream pressure when the system is dead-ended, protecting downstream devices and improving overall safety and reliability in automatic lines.
Yes. Its Excelon design with inline or modular installation, 0.7–17 bar adjustability, and robust construction suits packaging lines and automation equipment that require stable pneumatic pressure, repeatable setpoints, and quick commissioning. The Rc1/8 gauge porting supports effective monitoring, while the built-in T-bar allows rapid field calibration during line changes.
Certification details are not specified in the provided data for this exact model. For definitive confirmation, consult the official datasheet and product documentation. General Excelon products commonly align with CE expectations and industrial reliability requirements, and related variants may offer SIL-rated features; verify with the datasheet before procurement for regulatory compliance.
Maintenance supports a service-focused approach with the R74G-KITR service kit, designed for routine inspections and seal replacements. Regular checks of setpoint accuracy, venting behavior, and gasket integrity help prevent drift. When combined with compatible accessories and mounting hardware, service activity minimizes downtime and preserves consistent pressure control across high-cycle applications.