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Rotary Vane Vacuum Pumps for Demanding Industrial Applications

If you're working with sensitive biotech samples, freeze drying processes, or thin film evaporation, you need vacuum pumps that deliver consistent performance under pressure. The Welch CRVpro 48 and CRVpro 65 are built for exactly that. These two-stage rotary vane pumps are designed to handle industrial workloads with high displacement, low ultimate pressure, and quiet operation.

 

CRVpro 48 & 65

Key Features

  • High Free Air Displacement
    • CRVpro 48: 55.7 m³/h (928 l/min) @ 50 Hz
    • CRVpro 65: 74.3 m³/h (1238 l/min) @ 50 Hz
  • Low Ultimate Pressure
    • Down to 3×10⁻⁴ mbar (2×10⁻⁴ Torr) without gas ballast
  • Quiet Operation
    • ≤58 dB(A) at 50 Hz
  • Robust Build
    • Steel frame trolley available for roots pump systems
    • Weight: ~100 kg
    • Dimensions: 796 × 262 × 369 mm
  • Ready to Use
    • Ships with Directorr™ Premium vacuum pump oil, centering rings, and clamping rings

 

Applications

  • Industrial Freeze Drying
  • Vacuum Coating
  • Thin Film Evaporation
  • Refrigeration & HVAC
  • Space Simulation

 

Accessories

Inlet Options

  • PT40 Separator (700146): Prevents condensate suction
  • ADT40 Trap (705185): Eliminates oil back-streaming
  • ASF70 Dust Filter (700436): For non-chemical use

Exhaust Options

  • OME85/40 Mist Filter (700623): Corrosion-resistant surface

General

  • Oil Drain Kit (340011)
  • Premium Vacuum Pump Oil: Available in 5L, 20L, 200L
  • PFPE Oil (Labovac 13): 1L (800131-01)

Ordering Information

ModelStandard VersionPFPE VersionService Kit
CRVpro 483487T-01—S3405-99
CRVpro 653657T-013657T-01-03S3406-99

Performance Insights

Both models offer optimized pumping curves for rapid evacuation. When paired with roots pumps, they reach speeds up to 400 m³/h. The motors run at 1460/1760 rpm (50/60 Hz) with 2.2 kW power, making them suitable for continuous-duty industrial use.

FAQs

The CRVpro 65 offers higher displacement and pumping speed, making it better suited for larger systems or faster evacuation needs.