Welch 3301-01 CRVpro 30 Rotary Vane Direct Drive Pump
| CRVpro Direct Drive Rotary Vane Vacuum Pump CRVpro30 115V, 60Hz,1 Ph with N. Amer. 115V Plug, and |
The new CRVpro family of direct drive vacuum pumps offers increased reliability and longer service interval vs. other direct drive rotary vane vacuum pumps. The CRVpro family consumes up to 36% less oil than comparable pumps. Three features drive these benefits:
- Runs 10°C cooler than comparable pumps. Slows corrosion.
- Has a 40% larger oil capacity than comparable pumps. Dilutes aggressive chemicals.
- Has a chemical resistant coating in the oil case and pump module. Protects non-moving parts.
Welch CRVpro 30 Technical Specifications
| Parameter | Specification |
|---|---|
| Free Air Displacement @ 60 Hz | 22.1 CFM (627 L/min) |
| Free Air Displacement @ 50 Hz | 33.1 m³/h (551 L/min) |
| Ultimate Pressure | 2 × 10⁻³ Torr (3 × 10⁻³ mbar) |
| Noise Level | 55 dB(A) |
| Motor Speed | 1750 RPM @ 60 Hz / 1450 RPM @ 50 Hz |
| Motor Power | 1.1 HP (0.85 kW) |
| Oil Capacity | 2100 mL |
| Connection Flanges | NW25 |
| Inlet Hose Connection | 5/8" to 3/4" |
| Weight | 87 lbs (39.5 kg) |
| Dimensions (L x W x H) | 22.4 x 8.1 x 11.4 in (569 x 206 x 289 mm) |
The CRVpro family includes all the features you'd expect in a direct drive rotary vane pump: gas ballast, forced oil lubrication, anti-suckback mechanism and thermal overload protection.
Suitable applications include freeze drying, degassing, vacuum ovens and concentrators.
| CRVpro Direct Drive Rotary Vane Vacuum Pump CRVpro30 115V, 60Hz,1 Ph with N. Amer. 115V Plug, and |
The new CRVpro family of direct drive vacuum pumps offers increased reliability and longer service interval vs. other direct drive rotary vane vacuum pumps. The CRVpro family consumes up to 36% less oil than comparable pumps. Three features drive these benefits:
- Runs 10°C cooler than comparable pumps. Slows corrosion.
- Has a 40% larger oil capacity than comparable pumps. Dilutes aggressive chemicals.
- Has a chemical resistant coating in the oil case and pump module. Protects non-moving parts.
Welch CRVpro 30 Technical Specifications
| Parameter | Specification |
|---|---|
| Free Air Displacement @ 60 Hz | 22.1 CFM (627 L/min) |
| Free Air Displacement @ 50 Hz | 33.1 m³/h (551 L/min) |
| Ultimate Pressure | 2 × 10⁻³ Torr (3 × 10⁻³ mbar) |
| Noise Level | 55 dB(A) |
| Motor Speed | 1750 RPM @ 60 Hz / 1450 RPM @ 50 Hz |
| Motor Power | 1.1 HP (0.85 kW) |
| Oil Capacity | 2100 mL |
| Connection Flanges | NW25 |
| Inlet Hose Connection | 5/8" to 3/4" |
| Weight | 87 lbs (39.5 kg) |
| Dimensions (L x W x H) | 22.4 x 8.1 x 11.4 in (569 x 206 x 289 mm) |
The CRVpro family includes all the features you'd expect in a direct drive rotary vane pump: gas ballast, forced oil lubrication, anti-suckback mechanism and thermal overload protection.
Suitable applications include freeze drying, degassing, vacuum ovens and concentrators.



