Durable belt-driven vacuum pump known for ultra-reliable deep vacuum and long service life. Designed for continuous-duty lab and industrial use.
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The Welch DuoSeal Belt-Driven Vacuum Pump is an industry standard for high-reliability, long-life vacuum generation in laboratory and industrial environments. Designed with precision-machined cast iron rotors and pump bodies, this oil-sealed, belt-driven pump delivers exceptional vacuum depth with superior durability.
Built to operate continuously, the DuoSeal pump is ideal for freeze drying, vacuum ovens, degassing, distillation, and glove box systems. It provides ultra-low ultimate pressure while remaining quiet and cool during operation.
DuoSeal’s low RPM motor operation reduces wear, heat buildup, and oil mist, extending service intervals and performance life. The pump is designed for users who demand longevity, minimal maintenance, and excellent vacuum consistency.
Key Features
Specifications Table
| Specification | Welch DuoSeal Vacuum Pump |
|---|---|
| Pump Type | Belt-Driven, Oil-Sealed |
| Ultimate Vacuum | Down to 1 x 10⁻⁴ Torr |
| Displacement | Varies by model (e.g., 1376: 5.6 CFM) |
| Construction | Cast Iron Rotor & Body |
| Cooling | Air-cooled, low RPM |
| Noise Level | ~55 dB(A) |
| Oil Capacity | 1.5 to 4.0 quarts (varies by model) |
| Applications | Freeze Drying, Vacuum Oven, Glovebox |
| Voltage | Typically 115V or 230V (Model Dep.) |
| Type | 1402B-01 Belt-Drive 5.6 CFM, 1376B-01 Belt-Drive 10.6 CFM, 1397B-01 Belt-Drive 17.CFM, 1374B-01 Belt-Drive 23 CFM, 1405B-01 Belt-Drive 3.2 CFM |
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