Welch CRVpro 6 Rotary Vane Vacuum Pump
Ultimate Vacuum Without Gas Ballast
2 × 10⁻³ mbar (1.5 × 10⁻³ Torr)
Maximum Pumping Speed
4.2 CFM (7.1 m³/h)
Inlet Connection
DN 16 KF
- Oil-sealed, two-stage rotary vane design delivers reliable vacuum performance for laboratory and industrial applications
- Direct-drive motor construction with elastic shaft coupling ensures smooth and consistent operation
- High pumping performance supports freeze drying, vacuum ovens, degassing, and chamber evacuation applications
- Anti-suckback mechanism helps prevent oil backflow into the vacuum system during shutdown
- Thermal overload protection safeguards the motor against overheating during operation
- Low-noise operation provides a more comfortable laboratory working environment
- Automatic oil lubrication of sliding bearings supports long-term reliability and reduced component wear
- Durable construction designed for demanding laboratory and industrial vacuum applications
The Welch CRVpro 6 Rotary Vane Vacuum Pump is a reliable, high-performance vacuum pump designed for laboratory and industrial applications requiring consistent vacuum performance. Featuring an oil-sealed, two-stage rotary vane design, the CRVpro 6 provides efficient vacuum generation for applications including freeze drying, vacuum ovens, Schlenk lines, degassing, chamber evacuation, and backing turbomolecular pumps. Its direct-drive construction connects the motor and pump shaft through an elastic coupling, providing smooth operation and dependable performance across a wide range of vacuum processes.
The CRVpro 6 incorporates several features designed to enhance operational reliability and simplify maintenance, including a gas ballast valve, forced oil lubrication, an anti-suckback mechanism, and thermal overload protection. Its force-fed lubricated sliding bearings support consistent operation, while the integrated anti-suckback system helps prevent oil from flowing back into the vacuum system. Designed for demanding laboratory environments, the CRVpro 6 offers a durable and practical vacuum solution for applications requiring reliable vacuum generation.
All of our equipment is in excellent condition and will be fully tested to perform at factory specifications before being shipped.
The Welch CRVpro 6 Rotary Vane Vacuum Pump includes:
- Power Cord
- Operator's Manual
- Full 180 Day Parts and Labor Warranty
Welch CRVpro 6 Rotary Vane Vacuum Pump Specifications
| Maximum Pumping Speed | 4.2 CFM (7.1 m³/h) |
| Ultimate Vacuum Without Gas Ballast | 2 × 10⁻³ mbar (1.5 × 10⁻³ Torr) |
| Ultimate Vacuum With Gas Ballast | 7 × 10⁻² mbar (5 × 10⁻² Torr) |
| Number of Stages | 2 |
| Maximum Permissible Inlet Pressure | 1 bar (14.5 psi) |
| Maximum Permissible Outlet Pressure | 1.35 bar (19.6 psi) |
| Inlet Connection | DN 16 KF |
| Outlet Connection | DN 16 KF |
| Ambient Temperature Range | 10°C to 40°C |
| Noise Level | 50 dB(A) at 50Hz |
| Dimensions (L × W × H) | 18.2 × 6.2 × 9.1 in. (46.3 × 15.7 × 23 cm) |
| Weight | 48.5 lb. (22 kg) |
| Electrical Requirements | 115V, 60Hz |
- Confirm Power Supply and Pcb Are Outputting Correct Voltages
- Empty Existing Oil in Unit and Inspect for Particulates (If Applicable)
- Confirm Relays Are Functioning and Replace as Needed
- Fill With New Pump Oil (If Applicable)
- Clean Internal Diaphragms and Check Valves. Replace as Needed (If Applicable)
- Confirm Appropriate Noise Levels for Pump and Test with A Decibel-Meter
- Evaluate Pump Oil Through Viewing Glass (If Applicable)
- Confirm Pump Is Able to Reach Absolute Vacuum with Independent Vacuum Gauge
- Confirm Pump Interfaces with External Controllers (If Applicable)
- Ensure Cosmetics Are Acceptable
Downloads
Click Here to View the Technical Specs for the Welch CRVpro 6 Rotary Vane Vacuum Pump
