Norgren P72F-3GL-NNN Soft Start Dump Valve - G3/8
Part Number: P72F-3GL-NNN
Quick Summary
P72F-3GL-NNN Excelon soft start dump valve provides controlled ramp of downstream pressure for pneumatic machinery. This helps prevent costly shocks to cylinders and belts, reducing wear and downtime. The design supports CE marking to align with the European Machinery Directive and aids PUWER compliance, giving engineers a clear path to regulatory conformance. By combining a solenoid pilot with a spring return, it offers reliable actuation and safe fail-safe behavior. With a 3/8 inch port, a 3–10 bar operating range, and a healthy flow capacity, it pairs well with the Excelon family and compatible shut-off valves. In short, it delivers predictable startups, safer operation, and easier integration in automation lines.
Product Information
Extended Description
P72F-3GL-NNN Norgren: Assists machine designers in complying with the European Machineries Directive | Can help existing machinery to comply with PUWER (Provision and Use of Work Equipment Regulations) | Controlled increase of downstream pressure on start up | High forward flow capacity | High flow dump facility
Medium
Compressed air
Operating Temperature
-20 ... 50 °C, -4 ... 122 °F
Operating Pressure
3 ... 10 bar, 44 ... 145 psi
Port Size
G3/8
Actuation
Solenoid pilot / Spring return
Valve operation
3/2
Flow
21 dm3/sec, 45 scfm
Materials - Body
Zinc alloy
Materials - Elastomers
Synthetic material
Range
P72F
Series
Excelon
Brand
IMI Norgren
T72T-3GA-P1N
Excelon 3/2 modular system shut-off valve, G3/8
4214-51
Quikclamp
4214-52
Quikclamp with wall mounting bracket
MB002B
Quietaire heavy duty silencer male, R1/4
T40M0500
Quietaire sintered bronze silencer, M5
Feature: Soft-start control reduces startup shock and mechanical wear. Business Impact: Extends actuator life, lowers maintenance costs, and enhances equipment uptime. Application: Ideal for conveyors, robotic cells, and packaging lines where gentle pressure ramp is critical. Feature: G3/8 port and 3/2 valve operation provide compatibility with standard pneumatic hardware. Business Impact: Simplifies panel design, reduces leak-prone fittings, and speeds commissioning. Application: Retrofit and new-builds across automation lines using common port sizing. Feature: Solenoid pilot with spring return enables reliable, safe actuation. Business Impact: Gives predictable release behavior and safe fail-safe positioning during power loss. Application: Electrical control schemes in automated systems where a robust default state is required. Feature: Flow capacity and pressure range (21 dm3/s, 3–10 bar) support medium-load applications. Business Impact: Maintains adequate downstream supply without sacrificing shutdown performance; improves cycle times. Application: Medium-duty pick-and-place, clamp-and-peel operations, and forming processes. Feature: Durable zinc alloy body and synthetic elastomers provide industrial resilience. Business Impact: Increased resistance to corrosion and wear reduces downtime for maintenance. Application: Harsh factory environments and long service in continuous operation. Feature: Compatibility with Excelon accessories and mounting options (Quikclamp, wall brackets, silencers). Business Impact: Faster integration, reduced accessory sourcing time, and quieter operation. Application: Retrofit projects and new lines requiring compact, modular valve assemblies.
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FAQs
The P72F-3GL-NNN uses a standard G3/8 port size and offers mounting options including Quikclamp 4214-51 and Quikclamp with wall mounting bracket 4214-52. It also aligns with Excelon accessories such as T72T-3GA-P1N for modular shut-off integration, and silencers MB002B or T40M0500 for noise reduction. This makes retrofit and new installations straightforward within existing Norgren Excelon systems.
Operating pressure range is 3 to 10 bar (44 to 145 psi) with a flow of 21 dm3/sec (45 scfm). The valve operates in a 3/2 configuration and is solenoid-pilot actuated with spring return, delivering reliable startup control and consistent downstream performance in typical pneumatic lines.
Yes. The Excelon P72F-3GL-NNN provides a controlled pressure ramp during startup, reducing shocks to packaging line actuators and conveyors. Its moderate flow and responsive solenoid pilot enable smooth commissioning, improving line stability and reducing wear on downstream cylinders during high-cycle operations.
The valve is designed to support CE marking aligned with the European Machinery Directive, and it helps satisfy PUWER requirements by enabling safer, controlled start-up sequences. While CE compliance is clearly referenced, always verify your regional regulatory expectations for specific certifications and installation practices in your facility.
Opt for the Quikclamp mounting options and incorporate the Excelon accessories (T72T-3GA-P1N, silencers MB002B/T40M0500) to simplify installation and service. The zinc alloy body and synthetic elastomers resist typical shop-floor wear, while the solenoid pilot with spring return reduces failure modes during power loss. This combination lowers downtime, accelerates commissioning, and yields a favorable return on investment through improved line reliability.