Overview
The Linemaster 3-30A2-SI is a replacement internal valve assembly for the AirVal family of pneumatic foot switches. This 3-way valve is engineered to deliver reliable air control in industrial foot-operated applications, with proven durability and consistent performance across a wide range of manufacturing and assembly environments.
Key Features
- 3-Way Momentary Operation: Provides momentary air flow with automatic back-pressure exhaust when plunger is released
- High Airflow Rating: 30 CFM at 100 PSI with 25 CFM exhaust capacity
- Durable Internal Construction: Non-ferrous valve body, stainless steel plunger, and Teflon-coated buna-N O-rings resist corrosion
- Standard NPT Ports: 1/8″-27 NPT input and output connections for compatibility with AirVal foot switch assemblies
- Drop-In Replacement: Direct fit for existing Clipper and Classic series foot switch housings
- Industrial-Grade Performance: Operates reliably up to 150 PSI line pressure with minimal maintenance
Technical Specifications
- Air Flow: 30 CFM at 100 PSI
- Exhaust Flow: 25 CFM at 100 PSI
- Control Function: 3-Way Momentary
- Port Configuration: 1/8-27 NPT (input & output)
- Maximum Line Pressure: 150 PSI
- Valve Body Material: Non-ferrous construction
- Plunger Material: Stainless steel
- O-Ring Material: Teflon-coated buna-N
- Operating Temperature Range: -18 to +55°C (0 to 131°F)
Typical Applications
The Linemaster 3-30A2-SI is commonly used in:
- Manufacturing assembly line foot-operated air controls
- Industrial machinery requiring hands-free pneumatic actuation
- Maintenance and repair of AirVal foot switch systems
- Replacement valve for worn or damaged internal assemblies in Clipper and Classic series foot switches
- Heavy-duty industrial environments requiring reliable momentary air valve performance
Compatibility & Replacements
Compatible With
- AirVal Clipper Series: 3C-30A2-S and similar Clipper model foot switches
- AirVal Classic Series: 3E-30A2-S and related Classic model foot switch housings
- Linemaster pneumatic foot switch assemblies with standard NPT port configuration
- Any AirVal foot switch housing designed for 3-30A2-SI internal valve installation
Replaces / Drop-In Replacement For
- Original equipment Linemaster 3-30A2-SI valve assemblies
- Worn internal valves in 3C-30A2-S Clipper foot switches
- Internal valve components in 3E-30A2-S Classic foot switches
- OEM replacement part for AirVal foot control systems
Works With
- Linemaster foot switch control systems (Clipper, Classic, and compatible AirVal models)
- Standard compressed air systems with filtered and lubricated air supply
- Pneumatic actuation circuits requiring 3-way momentary valve operation
- Industrial control systems using foot-operated air valve interfaces
