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The new CRVpro family of direct drive vacuum pumps offers increased reliability and longer time between service intervals vs. other direct drive rotary vane vacuum pumps. The CRVpro family consumes up to 36% less oil than comparable pumps.

Three features drive these benefits:
· Runs 10°C cooler than comparable pumps. Slows corrosion.
· Has a 40% larger oil capacity than comparable pumps. Dilutes aggressive chemicals.
· Has a chemical resistant coating in the oil case and pump module. Protects non-moving parts.

The CRVpro family includes all the features you'd expect in a direct drive rotary vane pump: gas ballast, forced oil lubrication, anti-suckback mechanism and thermal overload protection.

Suitable applications include: Schlenk lines, Freeze drying, Degassing, Vacuum ovens and Concentrators.

Direct drive pumps are not recommended for filtration, aspiration, drying electrophoresis gels, or other applications requiring sustained operation above 30 torr.

Pumps are dual voltage. To switch from 115 to 230 operation, one removes the cover plate over the motor then actuates a switch that selects 115 or 230V operation. By default the units will be set to 115v.

Item Number Item Description PQ Price Qty Avail Quantity
Vacuum Pump, CRVpro4, 2.8 CFM,Direct Drive, Welch
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Vacuum Pump, CRVpro6, 4.2 CFM, Direct Drive, Welch
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Vacuum Pump, CRVpro8, 5.6 CFM, Direct Drive, Welch
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  Not Subject to Discount
Part Number AF-0349-P-04 AF-0349-P-06 AF-0349-P-08
Model CRVpro4 CRVpro6 CRVpro8
Free Air Displacement @ 60 Hz, cfm (L/min) 2.8 (78) 4.2 (118) 5.6 (158)
Ultimate Pressure, torr (mbar) 5x10⁻⁴ (4x10⁻⁴) 5x10⁻⁴ (4x10⁻⁴) 5x10⁻⁴ (4x10⁻⁴)
Noise Level, dBA 50 50 50
Motor Speed, RPM, @60Hz, 50Hz 1740 (1450) 1740 (1450) 1740 (1450)
Motor Power, HP (kW) 0.4 (0.5) 0.4 (0.5) 0.4 (0.5)
Oil Capacity (mL) 1150 1150 1000
Connection Flanges NW 16 NW 16 NW 16
Inlet Hose Connection 5/8" to 3/4" 5/8" to 3/4" 5/8" to 3/4"
Weight (lbs/kg) 46.3 / 21 48.5 / 22 49.6 / 22.5
Dimensions (L x W x H, in) 18.2 x 6.1 x 9.1 18.2 x 6.1 x 9.1 18.2 x 6.1 x 9.1