Overview
The Ashcroft A-30 is a compound pressure and vacuum gauge designed for general-purpose measurement in industrial and commercial applications. This gauge combines pressure (0-15 PSI) and vacuum (-30 IN Hg) measurement on a single dial, making it suitable for equipment monitoring in HVAC systems, refrigeration, pneumatic circuits, and pump applications. The A-30 features a reliable mechanical movement and durable construction to deliver consistent, accurate readings across a wide range of operating conditions.
Key Features
- Compound Measurement: Reads both pressure (0-15 PSI) and vacuum (-30 IN Hg) on a single 2.5–3.5 inch dial for convenient system monitoring
- PowerFlexâ„¢ Movement: Shock- and vibration-resistant design for performance and extended life
- TrueZeroâ„¢ Indication: Reduces potential risk of installing a damaged gauge on your equipment
- Corrosion-Resistant Case: ABS corrosion-resistant case protects the gauge in humid or chemically aggressive environments
- Brass/Bronze Wetted Parts: Brass / Bronze wetted parts ensure compatibility with a broad range of media and long service life
- UL Listed & FM Approved: UL Listed and FM Approved for regulatory compliance
Technical Specifications
- Gauge Type: Compound Gauge (Pressure & Vacuum)
- Pressure Range: 0 to 15 PSI
- Vacuum Range: 0 to -30 IN Hg
- Connection Type: 1/4 in MNPT
- Connection Location: Bottom
- Dial Size: 2.5–3.5 inches (depending on configuration)
- Case Material: ABS plastic
- Wetted Parts: Brass / Bronze
- Accuracy: +/-3-2-3%
- Certifications: UL Listed, FM Approved
- Application: General Purpose
Typical Applications
The Ashcroft A-30 is widely used in:
- HVAC and refrigeration systems requiring vacuum measurement during service
- Pneumatic circuit monitoring and troubleshooting
- Pump inlet/outlet pressure verification
- Compressed air system diagnostics
- Industrial process monitoring where dual pressure/vacuum indication is required
- Maintenance and field service applications
Compatibility & Replacements
Compatible With
- Standard 1/4 inch NPT male (MNPT) connections on compressors, pumps, and pressure vessels
- Pneumatic and hydraulic systems rated for 15 PSI maximum pressure and 30 IN Hg vacuum
- HVAC, refrigeration, and general industrial instrumentation setups
- Manifolds and gauge mounting blocks with 1/4 in NPT ports
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The A-30 is part of the Ashcroft 1005 series family and may serve as a direct replacement for earlier versions of compound vacuum/pressure gauges with matching connection types and pressure ratings.
Works With
- Mechanical pressure/vacuum systems (no electrical connections required)
- Pneumatic test kits and diagnostic equipment
- HVAC certification tools and accessory gauges
- Standard 1/4 in NPT adapter fittings and gauge isolation valves
