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Dual Piston Vacuum Pump
Details
Details
Product Overview
The 2508-A Twin-Head WOB-L Piston Vacuum Pump is a compact, oil-less vacuum pump built for laboratory, industrial, and composites applications that need higher vacuum flow. Running on standard 115V / 60Hz power, it delivers up to 4.11 cfm (116.4 L/min) of open flow and pulls a maximum vacuum of 26.6 in-Hg (91%), nearly double the open flow of a single-head pump, making it well suited to larger vacuum infusion setups and higher-demand lab or industrial vacuum tasks.
Because the 2508-A uses a low-vibration, twin-head WOB-L piston mechanism instead of an oil-lubricated design, process air stays free of lubricant contamination while still delivering higher flow than a single-head pump. A thermally protected motor (145 °C ± 5 °C cutoff) safeguards against overheating, while the pump's compact, panel-mountable footprint (7.18 × 9.77 × 9.88 in / 182 × 248 × 251 mm) makes it easy to integrate into existing equipment, benchtop setups, or OEM systems.
Whether you're pulling vacuum for larger resin infusion layups, running a vacuum degassing chamber, or supporting general-purpose lab and industrial vacuum needs where extra flow matters, the 2508-A offers oil-free reliability and higher throughput in a lightweight, easy-to-mount package.
Key Features
- Oil-less operation, discharge / process air stays free of lubricant contamination.
- Twin-head WOB-L piston design, higher flow with low vibration compared to single-head pumps.
- Thermally protected motor, built-in 145 °C ± 5 °C thermal switch helps prevent motor damage from overheating.
- Compact and lightweight, panel-mountable footprint fits easily into existing systems or benchtop setups.
- Versatile vacuum performance, up to 4.11 cfm open flow and 26.6 in-Hg maximum vacuum, ideal for vacuum infusion, degassing, and general lab/industrial vacuum service.
Specifications
| Specification | Value |
|---|---|
| Model | 2508-A |
| Pump Type | Twin-head WOB-L piston, oil-less |
| Thermal Protection | Yes (145 °C ± 5 °C) |
| Operating Voltage | 115 V |
| Frequency | 60 Hz |
| Motor Full-Load Current | 2.9 A (nameplate) |
| Capacitor | 20 mfd |
| Open Flow @ 60 Hz | 4.11 cfm (116.4 L/min) |
| Flow @ 15 in-Hg | 1.88 cfm (53.1 L/min) |
| Max Vacuum @ 60 Hz | 26.6 in-Hg (91%) |
| Intake Port | 1/4-18 NPT (Port B) |
| Exhaust Port | 1/4-18 NPT (Port A) |
| Operating Temperature (Environment) | 10 °C to 40 °C |
| Cord Lead Length | 6 ft ± 3 in |
| Dimensions (W × D × H) | 7.18 × 9.77 × 9.88 in (182 × 248 × 251 mm) |
Performance, Nominal Flow at 115 V / 60 Hz
| Vacuum (in-Hg) | Vacuum (%) | Flow (cfm) | Flow (L/min) |
|---|---|---|---|
| 0 | 0% | 4.11 | 116.4 |
| 5 | 17% | 3.58 | 101.4 |
| 10 | 34% | 2.78 | 78.6 |
| 15 | 51% | 1.88 | 53.1 |
| 20 | 68% | 0.97 | 27.6 |
| 25 | 85% | 0.25 | 7.1 |
| 26.6 | 91% | 0.01 | 0.3 |
Common Applications
- Vacuum infusion for composites and fiberglass layup, including larger panels needing higher flow
- Vacuum degassing and resin/epoxy bubble removal
- Laboratory vacuum filtration and sample prep
- General industrial vacuum handling and process support
- OEM integration into panel-mounted or benchtop equipment
Frequently Asked Questions
What is the maximum vacuum the 2508-A can pull?
The 2508-A reaches a maximum vacuum of 26.6 in-Hg (91%) when operated at 60 Hz.
What is the open flow rate of the 2508-A vacuum pump?
At 60 Hz, the 2508-A produces an open flow rate of 4.11 cfm (116.4 L/min). At 15 in-Hg of vacuum, flow drops to 1.88 cfm (53.1 L/min).
How does flow change as vacuum increases on the 2508-A?
Flow decreases as vacuum depth increases: 4.11 cfm at 0 in-Hg, 3.58 cfm at 5 in-Hg, 2.78 cfm at 10 in-Hg, 1.88 cfm at 15 in-Hg, 0.97 cfm at 20 in-Hg, 0.25 cfm at 25 in-Hg, and 0.01 cfm at its maximum of 26.6 in-Hg.
Is the 2508-A an oil-less vacuum pump?
Yes. The 2508-A uses an oil-less, twin-head WOB-L piston design, so the process air and exhaust stay free of lubricant contamination, making it a good fit for applications where clean vacuum is required.
What's the difference between the 2508-A and the single-head 2507-A pump?
The 2508-A uses a twin-head WOB-L piston design instead of a single head, roughly doubling open flow (4.11 cfm vs. 2.32 cfm) while pulling a similar maximum vacuum (26.6 in-Hg). It's the better choice when a process needs more flow, such as larger vacuum infusion layups.
Can the 2508-A be used for vacuum infusion?
Yes. Its combination of oil-free operation, strong vacuum depth (26.6 in-Hg), higher flow, and low-vibration piston design make it well suited to vacuum infusion processes in composites and fiberglass work, including larger layups.
What voltage and frequency does the 2508-A require?
The 2508-A operates on standard 115 V, 60 Hz power and draws a nameplate full-load current of 2.9 A.
What size are the intake and exhaust ports?
Both the intake (Port B) and exhaust (Port A) use 1/4-18 NPT threaded ports.
Does the 2508-A have overheat protection?
Yes. It includes a built-in thermal protection switch that trips at 145 °C ± 5 °C to help prevent motor damage.
What are the dimensions and mounting considerations?
The 2508-A measures 7.18 × 9.77 × 9.88 in (182 × 248 × 251 mm) and is designed with a compact, panel-mountable footprint for easy integration into benchtop or OEM setups.
What is the recommended operating environment for the 2508-A?
The pump is rated for ambient operating temperatures between 10 °C and 40 °C.
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