1379 Duragauge® Safety Type Spring Tube Pressure Gauge
The Ashcroft® 1379 Duragauge® is a high-performance 4.5" ASME standard process pressure gauge available in dial sizes ranging from 4.5" to 8.5". This safety-type gauge delivers reliable pressure measurement for demanding industrial applications.
Product Specifications
Performance & Construction
- Accuracy: ±0.5% of span (ASME B40.100, Grade 2A)
- Sizes: 4½", 6", 8½"
- Range: Vacuum to 100,000 psi
- Case Style: Solid front with pressure relief back
- Movement: Rotary, Adjustable
- Movement Materials: 400 SS, Teflon® coated pinion gear and segment
- Window Material: Glass (STD.), Acrylic Window (OPT.), Shatterproof Glass (OPT.)
- Dial: Aluminum, white background, black pressure scale
- Pointer: Micrometer Adjustable, Aluminum
Process Connections
- Location: Lower, Back
- Size: ¼ NPT Male, ½ NPT Male, 9⁄16-18 UNF-2B (high pressure connection)
Environmental Protection
- Dry case: Case not sealed, recommended for weather protected environment only
- Liquid filled or field fillable: IP66 or NEMA 4X
- Hermetically sealed: IP66
- Dampening Options: Liquid: glycerin, silicone, Halocarbon®, PLUS!™ Performance
- Mounting: Stem, Surface, Flush
Wetted Components
| Bourdon Tube |
Process Connection Materials |
Joints |
| 316L SS |
316L SS |
Welded |
| 316L SS |
Steel |
Welded |
| K-Monel® 500 Tube |
Monel® 400 |
Welded |
| C510 Phos. Bronze |
Brass |
Silver brazed |
| Iconel® |
316L SS (60-1379 only) |
Welded |
Non-Wetted Components
- Case: Aluminum
- Ring: Polypropylene
- Back Cover: Polycarbonate
Temperature Limits (°F/°C)
| Version |
Ambient |
Process |
Storage |
| Dry |
-20°F to 200°F (-29°C to 93°C) |
-20°F to 250°F (-29°C to 121°C) |
-40°F to 250°F (-40°C to 121°C) |
| PLUS!™ |
-40°F to 150°F (-40°C to 66°C) |
-40°F to 200°F (-40°C to 93°C) |
-40°F to 150°F (-40°C to 66°C) |
| Glycerin fill |
20°F to 150°F (-7°C to 66°C) |
20°F to 150°F (-7°C to 66°C) |
0°F to 150°F (-18°C to 66°C) |
| Silicone fill |
-40°F to 150°F (-40°C to 66°C) |
-40°F to 200°F (-40°C to 93°C) |
-40°F to 150°F (-40°C to 66°C) |
| Halocarbon® fill |
-40°F to 150°F (-40°C to 66°C) |
-40°F to 200°F (-40°C to 93°C) |
-40°F to 150°F (-40°C to 66°C) |