Overview
The Marshalltown water pressure gauge 0-10 inches of water (part C-21-B-98) is a proven analog measurement instrument designed for accurate low-pressure monitoring. Marshalltown has a long history of manufacturing reliable gauges for industrial, construction, and HVAC applications. This unit measures pressure in the 0–10 inches of water column (W.C.) range, making it ideal for applications requiring precision at lower pressure scales.
Key Features
- 0–10 inches of water column measurement range
- Compatible with non-corrosive media: water, oil, air, and inert gases
- Analog dial design for straightforward field reading
- General-purpose construction suitable for portable and permanent installations
- Used, fully functional condition with cosmetic wear
Technical Specifications
| Pressure Range | 0–10 inches of water column |
| Manufacturer | Marshalltown Instrument |
| Part Number | C-21-B-98 |
| Gauge Type | Analog dial |
| Media Compatibility | Water, oil, air, non-corrosive gases |
| Condition | Used — tested and fully operational |
| Application Class | General purpose — industrial, HVAC, plumbing |
Typical Applications
- HVAC & Boiler Systems: Measuring furnace draft, induced draft, and low-side pressure in heating equipment
- Plumbing & Water Systems: Monitoring water pressure in residential and commercial line pressure testing
- Air Compressor Systems: Testing air delivery pressure and filter differential pressure
- Industrial Testing: General pressure diagnostics for non-corrosive fluid and gas systems
- Equipment Commissioning: Verifying system pressures during installation and maintenance
Compatibility & Replacements
Compatible With
- Low-pressure HVAC and boiler control circuits
- Water supply and distribution lines
- Pneumatic testing rigs and compressed air systems
- Plumbing pressure test equipment
- General industrial and commercial measurement setups
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator or equipment manual before ordering. Marshalltown C-series gauges are designed as interchangeable measurement instruments across plumbing and HVAC applications within the 0–10 W.C. range.
Works With
- Portable pressure test kits and manifolds
- HVAC diagnostic and commissioning systems
- Pressure transducer comparison and calibration reference
- Field measurement and troubleshooting operations







