Welch CRVpro vacuum pumps are two-stage, direct driven rotary vane pumps designed for general laboratory vacuum and chemical applications.  Ranging from 1.8 SCFM to 52.5 SCFM they cover a wild variance of flow requirements found in most collegiate, commercial, and industrial laboratory environments. All CRVpro pumps provide deep vacuum to .002 Torr (29.919"HgV)

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The CRVpro line is built for reliability to provide stable operation and a long product lifespan when maintained properly.  These models are designed with enhanced air flow, allowing the pump to operate 10°C cooler than standard direct drive models.  Lower operating temp leads to reduced chemical reactivity within the pump and also slows down the rate of oil consumption.  

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The CRVpro also features a PTFE coating on the inside of the oil casing, along with a larger oil capacity, to slow chemical corrosion and extend service internals.  

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Available in 1 Phase TEFC Motor, 3 Phase TEFC Motor, and Explosion Proof Motors.  ​

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Common laboratory applications for Welch CRVpro pumps : Freeze drying, vacuum ovens, concentrators, glove boxes, schlenk lines, HVAC/refrigeration service, coaters, backing diffusion pumps and turbo molecular pumps, short path, wiped film, metallurgy/vacuum furnaces, lamp manufacture, space simulation, degassing, and vessel/chamber evacuation.