1109 Pressure Gauge
The Ashcroft® 1109 is a high performance 4.5″ ASME style Process pressure gauge with a stainless steel case designed for applications requiring safety and reliability. Features include a solid front case and ranges up to 100,000 psi (7,000 bar).
Key Features:
- Solid-front case design for safety
- Ranges from 15 psi to 100,000 psi
- PLUS!™ Performance (option)
Applications:
Process Market:
Refineries
Chemical and Petrochemical Plants
Offshore Oil and Gas
Natural Gas Transmission and LNG
Water and Wastewater
Power Generation
Mining and Metals
Industrial Market:
Turbines & Compressors
Cryogenics
Waterjets and Waterblasters
Product Information
Specifications
- Accuracy
- ±0.5% of span (ASME B40.100, Grade 2A)
- Size
- 4 1/2"
- Process Connection Size
- 1⁄4 NPT Male, 1⁄2 NPT Male, 9⁄16-18 UNF-2B (high pressure connection)
- Process Connection Location
- Lower
- Pressure Ranges
- Vacuum, Compound, 15 to 100,000 psi
- Case Style
- Solid Front
- Window
- Glass (STD.), Safety glass (STD.),Shatter proof glass (OPT.)
- Weather Protection
- IP64, IP65 Hermetically sealed
- Mounting
- Stem
- Movement
- Adjustable
- Dampening
- PLUS!™ Performance, throttle screw
Data Sheets:
Product/Technical Information:
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Resources & Tools
Min/Max Guide
IMPORTANT! When selecting a diaphragm seal or isolation ring, refer to the Min/Max Guide (PI page) for compatibility with this gauge.
Materials Selector
Use the selector to review compatible wetted materials and requirements of your application.
Unit Converter
Need to convert measurement units? Check out our quick and easy tool to convert pressure, temperature and flow units of measure.
Product Information
To learn more about the technical details for options available, review our product information (PI) pages.
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Ashcroft is a trusted source for pressure, temperature, and test instruments around the world. Learn more about how we can help you protect your people, processes, and profits.

