Overview
The Smiths Selec-O-Gas Flowmeter 3492 (part number 57201) is a field-proven pressure and flow measurement gauge designed for controlled gas delivery in industrial, welding, and refrigeration environments. With a 0–4000 PSI operating range, this unit provides precise gas flow monitoring and regulation for critical process applications. The Selec-O-Gas line represents Smith’s commitment to accuracy and durability in gas control solutions.
Key Features
- Wide pressure range (0–4000 PSI) suitable for high-pressure gas applications
- Precision float-tube design for accurate, repeatable flow readings
- Durable construction for industrial-duty service environments
- Compact, space-efficient design integrates into existing gas delivery systems
- Selec-O-Gas brand reputation for reliability in welding, HVAC, and refrigeration markets
Technical Specifications
- Model: Selec-O-Gas 3492
- Part Number: 57201
- Pressure Range: 0–4000 PSI
- Manufacturer: Smiths
- Application: Industrial gas flow measurement and regulation
- Operating Principle: Variable-area flowmeter (float-tube type)
- Condition: Used, tested, fully functional
Typical Applications
- MIG and TIG welding gas regulation
- Refrigeration and air conditioning systems
- Industrial gas delivery and cylinder regulation
- Laboratory and process gas applications
- Acetylene, argon, CO₂, and helium flow control
Compatibility & Replacements
Compatible With
- Gas cylinder regulators (CGA connections)
- Pipeline gas delivery systems
- Industrial gas manifolds
- Welding equipment and torches
- HVAC and refrigeration manifolds
Replaces / Drop-In Replacement For
- Verify model compatibility with your system before installation. For direct replacement guidance, consult the original equipment documentation or contact Smith technical support.
Works With
- Standard CGA (Compressed Gas Association) connections
- Brass and steel manifold assemblies
- Precision regulators from Smith and compatible manufacturers
- Industrial gas safety systems and pressure relief devices






