About Pipe Size
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About Pressure Gauges
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About Vacuum Pumps
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Absolute Pressure Gauges
Unlike other gauges that measure the difference between your system and the atmosphere, these give measurements relative to zero pressure. They’re often used in laboratory applications, and they are barometrically independent.
Gauges with a Torr scale are also known as Torr gauges.
Stainless steel gauges have excellent corrosion resistance, so they can be used with more corrosive liquids and gasses than gauges with a brass connection and aluminum case.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air
- Accuracy: ±2% Full Scale (Not Graded)
Available Pressure Ranges | |||||
|---|---|---|---|---|---|
Numeric Increments | Graduation Marks | ||||
| Pressure Range, mbar | Pressure Range, Torr | mbar | Torr | mbar | Torr |
| 0 to 50 | 0 to 40 | 10 | 10 | 1 | 1 |
| 0 to 130 | 0 to 100 | 20 | 20 | 2 | 2 |
| 0 to 1,000 | 0 to 760 | 200 | 100 | 20 | 10 |
Bottom Connection | ||||||
|---|---|---|---|---|---|---|
| Dial Diameter | Pipe Size | Environment Temp. Range, °F | Process Temp. Range, °F | Lens Material | Each | |
NPT Male | ||||||
| 4" | 1/4 | 5° to 120° | 0° to 145° | Glass | 000000 | 0000000 |
- For Use With: Air, Carbon Dioxide, Diesel Fuel, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Natural Gas, Water
- Accuracy: ±1% Full Scale (Not Graded)
Available Pressure Ranges | ||
|---|---|---|
| Pressure Range, mbar | Numeric Increments, mbar | Graduation Marks, mbar |
| 0 to 25 | 5 | 0.5 |
| 0 to 60 | 10 | 1 |
| 0 to 160 | 50 | 5 |
| 0 to 600 | 100 | 10 |
| 0 to 1,000 | 200 | 20 |
Bottom Connection | ||||||
|---|---|---|---|---|---|---|
| Dial Diameter | Pipe Size | Environment Temp. Range, °F | Process Temp. Range, °F | Lens Material | Each | |
BSPP Male | ||||||
| 4" | 1/2 | 5° to 120° | 0° to 200° | Glass | 000000 | 000000000 |
Hand-Held High-Vacuum Gauges
Check the vacuum levels in high-vacuum pumps, valves, and chambers with this compact gauge. Use a ring and clamp (both sold separately) to connect them to another quick-clamp high-vacuum fitting, also known as KF, QF, and NW fittings. The digital display shows measurements in torr, mbar (millibar) and hPa (hectopascal).
- For Use With: Air
- Accuracy: ±10% @ 7.5 to 1.5 × 10 -4 torr, ±30% @ 75 to 22.5 torr
Vacuum Range | ||
|---|---|---|
| Torr | mbar | hPa |
| 750 to 3.7 × 10 -4 | 1000 to 5 × 10 -4 | 1000 to 5 × 10 -4 |
Gauges with Center Back Connection | Clamps | Rings | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High-Vacuum Flange Size | Wd. | Ht. | Dp. | Environment Temp. Range, °F | Process Temp. Range, °F | For Tube OD | Flange OD | Number of Batteries Included | Each | Each | Each | |||
Quick Clamp Tube Connection | ||||||||||||||
| 16 | 2 3/8" | 4 3/4" | 1" | 40° to 100° | 0° to 140° F | 3/4" | 1.18" | 1 | 000000 | 000000000 | 00000000 | 00000 | 00000000 | 00000 |
Electric Ultra-High-Vacuum Pumps
Achieve vacuum levels up to 1 x 10 -12 torr with these ultra-high-vacuum pumps. Each unit includes two pumps—a diaphragm pump and a turbomolecular pump—that work together to create extremely high levels of vacuum in your chamber. The turbomolecular pump meets IP54 for protection in damp and dusty environments. Units are compact, so they fit on top of a workbench or table.
Pumps are ready to use as soon as they’re plugged in and connected to a chamber. Since they don’t use oil, they won’t introduce contaminants into your system. They hardly vibrate, minimizing interference with sensitive instruments and measurement devices.
Pumps with claw-clamp intake connections require a ring and four double-claw clamps (all sold separately) to connect to other components. Claw-clamp connections are also known as ISO-K fittings. These pumps include a gauge with quick-clamp connections, which requires a quick clamp and a ring (both sold separately) to connect. Quick-clamp connections are also known as KF fittings.
Pumps with flanged intake connections and the included gauge each require a gasket (sold separately) to connect to your chamber. Flanged connections are also known as CF fittings.
Intake Connection | Gauge Port Connection | Discharge Connection (BSPP Threads) | O'all | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max. Vacuum | Max. Flow Rate, cfm | Volume, dBA | Current, A | For Tube OD | Flange OD | High-Vacuum Flange Size | High Vacuum Connection Type | For Tube OD | Flange OD | High-Vacuum Flange Size | High Vacuum Connection Type | Pipe Size | Gender | Ht. | Wd. | Each | |
Claw-Clamp Intake Connection—120V AC/240V AC, Single Phase | |||||||||||||||||
| 1 × 10 -8 torr @ 72° F | 142 | 50 | 4.6 | 2 1/2" | 3 3/4" | 63 | ISO-K | 1" | 1.57" | 25 | ISO-KF | 1/8 | Male | 13 5/8" | 11 7/8" | 000000 | 000000000 |
Flanged Intake Connection—120V AC/240V AC, Single Phase | |||||||||||||||||
| 1 × 10 -12 torr @ 72° F | 142 | 50 | 4.6 | 2 1/2" | 4 1/2" | 63 | CF | 1 1/2" | 2 3/4" | 40 | CF | 1/8 | Male | 13 7/8" | 11 7/8" | 000000 | 00000000 |
| For Tube OD | For Flange OD | For High-Vacuum Flange Size | High Vacuum Connection Type | Material | Max. Vacuum | Each | |
For Claw-Clamp Intake Connection—Double-Claw with Bolt | |||||||
|---|---|---|---|---|---|---|---|
| 2 1/2", 3", 4" | 3.74", 4.33", 5.12" | 63, 80, 100 | ISO-K | Aluminum | 1 × 10 -9 torr @ 72° F | 0000000 | 00000 |
For Quick-Clamp Gauge Connection—Clamp with Wing Nut | |||||||
| 1" | 1.57" | 25 | ISO-KF | Aluminum | 1 × 10 -7 torr @ 72° F | 0000000 | 00000 |
Material | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| For Tube OD | For Flange OD | For High-Vacuum Flange Size | High Vacuum Connection Type | O-Ring | Inner Ring | Max. Vacuum | Max. Temp., °F | Each | |
For Claw-Clamp Intake Connection | |||||||||
| 2 1/2" | 3.74" | 63 | ISO-K | Viton® Fluoroelastomer Rubber | 304 Stainless Steel | 1 × 10 -9 torr @ 72° F | 400° | 0000000 | 000000 |
For Quick-Clamp Gauge Connection | |||||||||
| 1" | 1.57" | 25 | ISO-KF | Fluoroelastomer Rubber | 304 Stainless Steel | 1 × 10 -7 torr @ 72° F | 300° | 0000000 | 00000 |
