Description
- Diaphragm Internals for Accurate Low Pressure Measurement
- Weatherproof- Hermetically Sealed Stainless Steel Case
- 316 Stainless Steel Internals
- HVAC
- Boiler/HVAC
- Burner
- Oil & Gas
- Industrial
- Commercial

Low Pressure Gauges from Marsh Instruments incorporate a diaphragm element allowing for accurate low-pressure readings in support of a variety of applications, with ASME Grade A 2/1/2% accuracy for ranges above 30” of water. Available ranges include vacuum and pressure in inches of water, ounces per square inch, kilopascals, and millimeters of mercury.
| Spec accuracy | For Ranges 30" H2O and above: 2/1/2%(ASME Grade A), For Ranges Below 30" H2O: 3/1/3% |
|---|---|
| Bezel | 304SS, Removable |
| Connection | 1/4" or 1/2" NPT |
| Design | Meets/Exceeds ASME B40.100 |
| Pointer | Aluminum, Black Painted |
| Mount | Lower Mount |
| Vent plug | N/A |
| Accuracy | For Ranges 30" H2O and above: 2/1/2%(ASME Grade A), For Ranges Below 30" H2O: 3/1/3% |
| Subtitle | Diaphragm/Capsule Internals |
| Series | G44 Series |
| Dial color | Black Markings on White |
| Dial size | 2.5" & 4" |
| Pressure ranges | Low Pressure Vacuum Pressure 10" H20 through 10 psi |
| Case | Stainless Steel |
| Standard case fill | Dry, Non-Fillable |
| Window | Instrument Glass |
| Movement | Brass |
| Dial sizes | 2.5", 4" |
| Ambient temperature | '-40 to 160F |
| Internal material | Copper Alloy |
| Tube socket | Copper Alloy |
| Standard scale | Dual Scale with kPa, Triple Scale: oz/in², in H20, & kPa |
| Weights | see variation page |