The Welch CRVpro4 is a high-performance, direct drive rotary vane vacuum pump engineered for enhanced durability and extended service life. Designed to run cooler and handle aggressive chemical vapors more effectively than comparable pumps, it's ideal for demanding lab and industrial applications.
Key Benefits:
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Operates 10°C cooler than similar pumps, reducing wear and extending life
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40% larger oil capacity for better dilution of chemical contaminants
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Chemical-resistant coating on oil case and pump module for added protection
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Slows internal corrosion and protects non-moving components
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Built for continuous use in harsh environments
Specifications
| IP44 | |
| cUL and CE | |
| CRVpro4 | |
| US (NEMA - 5) | |
| 21 kg | |
| 60 Hz | |
| 115 V |
| 1450 rpm at 50 Hz; 1740 rpm at 60 Hz | |
| 46.3 x 15.7 x 23.0 cm (18.2 x 6.1 x 9.1 in.) | |
| 50 dB | |
| 46.3 lb. | |
| Vacuum Pump | |
| 67 L/min. at 50 Hz; 78 L/min. at 60 Hz |
Performance Specifications:
| Operating Condition | Ultimate Pressure |
|---|---|
| Without gas ballast (partial) | 5 × 10⁻⁴ mbar (4 × 10⁻⁴ Torr) |
| Without gas ballast (total) | 2 × 10⁻³ mbar (1.5 × 10⁻³ Torr) |
| With gas ballast (total) | 7 × 10⁻² mbar (5 × 10⁻² Torr) |