Welch CRVpro30 Two-Stage Vacuum Pump w/ Filter

The Welch CRVpro30 Two-Stage Direct-Drive Rotary Vane Vacuum Pump with Exhaust Filter is engineered for demanding industrial, analytical, and chemical laboratory applications that require high-throughput pumping speed combined with deep ultimate vacuum. Featuring a direct-drive rotary vane architecture and high chemical tolerance, this high-capacity unit runs significantly cooler than conventional vacuum pumps. Consequently, pilot plants, research laboratories, and production facilities maintain reliable vacuum stability across extended, heavy-duty processing cycles.

Key Technical Specifications of the Welch CRVpro30

• Pumping Mechanism: Two-stage direct-drive rotary vane system
• Displacement / Free Air Capacity: Up to 36 m³/h (21.2 CFM) at 60 Hz; 30 m³/h (17.7 CFM) at 50 Hz
• Ultimate Pressure: Down to 3 × 10⁻⁴ mbar (2 × 10⁻⁴ Torr) for high-depth vacuum demands
• Motor Drive: Heavy-duty dual-voltage electric motor designed for continuous duty
• Exhaust Filtration: Equipped with a dedicated exhaust mist filter to capture and recycle lubricating oil aerosols
• Inlet/Outlet Connections: Standard NW25 / KF25 vacuum flange connections for leak-tight coupling

Design and Operational Advantages

• Cool-Running Operating Architecture: By reducing internal friction and operating up to 10°C cooler than comparable direct-drive units, the pump minimizes thermal stress on the vacuum fluid. As a result, oil breakdown slows down, which directly extends the life of mechanical seals and moving vanes.
• Corrosion-Resistant Surface Treatment: Precision internal metal surfaces are coated to resist attack from aggressive chemical vapors and solvent fumes. Therefore, harsh process streams do not compromise internal clearances as quickly as in untreated standard pumps.
• Integrated Exhaust Mist Filtration: In addition to strong displacement, the high-efficiency exhaust filter removes oil droplets from discharge gases. Consequently, clean air returns to the laboratory environment, safeguarding worker health while reducing oil replenishment frequency.
• Multi-Position Gas Ballast: A built-in gas ballast valve injects controlled ambient air into the compression stage. Therefore, condensable vapors and moisture pass cleanly out of the exhaust without collecting in the oil reservoir.

Common Scientific and Industrial Applications

• Pilot Plant & Industrial Lyophilization: Specifically, it provides the sustained deep vacuum and large displacement required for high-volume freeze-drying trays.
• Large Vacuum Ovens & Distillation: Moreover, it accelerates evaporation rates during large-scale solvent recovery, short-path distillation, and degassing ovens.
• Analytical Instrument Backing: Additionally, it serves as a robust roughing pump backing high-throughput turbomolecular pumps and mass spectrometers.
• Inert Glove Boxes & Schlenk Manifolds: Consequently, synthetic chemists gain rapid chamber evacuation to maintain moisture- and oxygen-free atmospheres.

By combining high displacement capacity with low running temperatures and dedicated exhaust filtration, the Welch CRVpro30 provides an exceptionally durable, low-maintenance vacuum solution for high-throughput operational demands.