Schneider Electric (Barber Colman) 2420-001 Pressure Gauge

The Schneider Electric (Barber Colman) 2420-001 Pressure Gauge is a professional-grade diagnostic and monitoring tool designed for continuous indication of air pressure within pneumatic control systems. This 0 to 30 psi pressure gauge features a compact 1-1/2" face, making it suitable for tight clearances in mechanical rooms and control cabinets. Engineered with a phosphor bronze Bourdon tube and sturdy brass gears, it provides reliable psig (and kPa) readouts for main air pressure or pilot-operated output signals from pneumatic controllers.

Built for direct stem mounting, the 2420-001 utilizes a standard 1/8" center back NPT connection to interface seamlessly with existing distribution manifolds. This model is a direct functional equivalent for part numbers A201, A201-01, A201-02, and AL-362, ensuring drop-in compatibility for legacy Barber Colman and TAC infrastructures. Technical field use confirms its accuracy for calibrating pneumatic thermostats and verifying HVAC system air pressure in hydronic and pneumatic automation sequences.

Key Benefits

• Universal Compatibility: Serves as a direct replacement for Barber Colman A201 and AL-362 series components.
• Precision Actuation: Utilizes a phosphor bronze Bourdon tube with brass gearing for consistent needle response across the 0-30 psi range.
• Durable Construction: Features a black enamel case and friction ring designed to withstand industrial HVACR environments.
• Compact Footprint: The 1-1/2" dial size allows for clean integration into multi-gauge panels or direct stem mounting on control lines.

Common Questions

What is the thread size for the air connection?
This gauge uses a standard 1/8" center back connection (MNPT) typical of pneumatic control manifolds.

Is this gauge compatible with water or oil systems?
The 2420-001 is specifically engineered for clean, dry, oil-free air in pneumatic control systems. Using it with liquid media may damage the internal Bourdon tube.

Can this be used for vacuum applications?
No, this model is designed for positive pressure monitoring only, ranging from 0 to 30 psi.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.