Overview
The Ashcroft 1279 Duragauge 600 PSI is a rugged, high-performance pressure gauge engineered for industrial process measurement. Featuring a 316 stainless steel tube, socket, and process connection, this gauge delivers superior corrosion resistance in hydraulic systems, pneumatic lines, pumps, and harsh chemical environments. The solid front phenolic case and ASME B40.100 Grade 1A accuracy (±1% of span) make it a trusted choice for refineries, petrochemical plants, offshore operations, power generation, and water treatment facilities.
Key Features
- 4.5″ dial with ASME style process gauge design
- 316 stainless steel tube and socket for superior corrosion resistance
- Teflon-coated 400 series stainless steel movement for smooth, reliable operation
- Solid front phenolic case for durability and protection
- ASME B40.100 Grade 1A accuracy standard (±1% of full scale)
- Available dry or liquid-filled configurations
- 10-year pressure system warranty (new units)
Technical Specifications
- Pressure Range: 0–600 PSI
- Dial Size: 4.5 inches (ASME style)
- Tube Material: 316 stainless steel
- Process Connection: 316L stainless steel, bottom mount (SAE flange or NPT available)
- Movement: Teflon-coated 400 series stainless steel
- Case Material: Phenolic (solid front)
- Accuracy Rating: ASME B40.100 Grade 1A (±1% of span)
- Maximum Working Pressure: 600 PSI (Type 107 / 316 SS configuration)
- Operating Temperature: −20 to +250°F (−29 to +121°C)
- Liquid Fill Option: Glycerin-filled (if specified); acrylic window standard
- Certifications: ASME B40.100, RoHS, REACH
- Series: Ashcroft 1279 Duragauge
Typical Applications
- Hydraulic systems and pump monitoring
- Pneumatic line pressure verification
- Oil and gas refineries
- Chemical and petrochemical processes
- Offshore and subsea equipment
- Water and wastewater treatment
- Power generation and turbine systems
- Mining and metals processing
- Compressed gas systems
Compatibility & Replacements
Compatible With
- Hydraulic systems (mineral oil, biodegradable fluids)
- Pneumatic networks and compressed air lines
- Chemical and corrosive process fluids
- ISO 4400, ISO 4401 flange mounting standards
- NPT and SAE thread process connections
- Diaphragm seals and isolation rings (Ashcroft PL02, V01, V02, V03)
- Pressure snubbers and dampeners (1106, 1112, PD02 models)
Replaces / Drop-In Replacement For
- Ashcroft 1279 gauges with older or different tube materials
- Generic 0–600 PSI analog pressure gauges in similar ASME 4.5″ configurations
- Verify specific model interchangeability with the original installation documentation
Works With
- Ashcroft pressure limiting valves (PL02)
- Ashcroft throttle screw and needle valve accessories
- Siphon tubes (1098, 1100, 1198, 2198)
- Pulsation dampeners and snubbers for high-vibration environments
- Field-fillable configurations for glycerin or silicone fills
- Optional pressure warning contact switches and electrical accessories
