The Welch CRV pro 8 Direct Drive Rotary Vane Vacuum Pump (Model 3081-01) combines efficiency, durability, and quiet operation, making it a reliable choice for laboratory and industrial applications requiring deep vacuum levels. Its enhanced features, such as larger oil capacity and cooler running temperatures, contribute to reduced maintenance and extended service life.

Key Specifications

Pumping Speed: 5.6 CFM (158 L/min) at 60 Hz

Ultimate Vacuum:

Without Gas Ballast: 2 x 10⁻³ mbar (1.5 x 10⁻³ Torr)

With Gas Ballast: 7 x 10⁻² mbar (5 x 10⁻² Torr)

Motor Power: 0.4 kW (1/2 HP)

Motor Speed: 1740 RPM at 60 Hz

Noise Level: ≤50 dB(A)

Oil Capacity: 1000 mL

Dimensions: 46.3 x 15.7 x 23 cm (18.2 x 6.1 x 9.1 in)

Weight: 22.5 kg (49.6 lbs)

Electrical Requirements: 115V, 60 Hz, Single Phase

Features & Benefits

Enhanced Oil Capacity: The pump boasts a 40% larger oil reservoir compared to similar models, effectively diluting aggressive chemicals and extending service intervals.

Cooler Operation: Designed to run 10°C cooler than standard rotary vane pumps, this feature reduces chemical activity within the pump, leading to less oil consumption and prolonged pump life.

Chemical Resistance: Equipped with a chemical-resistant coating in the oil case and pump module, it offers protection to non-moving parts against corrosive substances.

Quiet Performance: Operating at ≤50 dB(A), it ensures minimal noise, making it suitable for laboratory environments.

Comprehensive Protection: Features such as gas ballast, forced oil lubrication, anti-suck back valve, and thermal overload protection ensure reliable and safe operation.

Ideal Applications

The Welch CRV pro 8 is versatile and suitable for various applications, including:

Freeze drying

Vacuum ovens

Schlenk lines

Backing turbo molecular pumps

Degassing

Vessel/chamber evacuation