Direct Drive Rotary Vane

High-Performance Rotary Vane Vacuum Pumps

Welch offers a comprehensive range of belt-driven and direct-driven rotary vane pumps, engineered for reliability and high performance across various scientific and industrial applications. Our vacuum pumps are designed to ensure a deep and dependable vacuum, making them an essential component for processes such as mass spectrometry, freeze-drying, vacuum ovens, and rotary evaporation.

Introducing the Welch CRVpro Series: The Ideal Backing Pump

The Welch CRVpro series offers an economical and durable alternative for backing pumps used in mass spectrometry. Designed to replace units from other manufacturers—including Edwards, Agilent, and Pfeiffer—the CRVpro series delivers reliable performance and compatibility across a wide range of systems.

Key features of the CRVpro series include:

• Cooler Operation: Enhanced airflow design allows the pumps to run 10°C cooler than standard rotary vane pumps.
• Enhanced Durability: A PTFE-coated oil case and a black oxide-coated pump module reduce metal corrosion and extend the time between service intervals.
• Chemical Resistance: The large oil chamber dilutes chemical vapors, minimizing oil breakdown and reducing chemical attacks within the pump.