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Home>Welch Vacuum>Direct-Drive Rotary Vane Vacuum Pumps
 

Direct-Drive Rotary Vane Vacuum Pumps


CRVpro vacuum pumps are two-stage direct-driven vacuum pumps. 

They are nine models of CRVpro available with free air displacement from 1.8 cfm to 52.5 cfm.  Ultimate pressure to 2x10⁻³ torr. Three models of pumps with explosion proof motors, with free air displacements from 2.8 to 12.8 cfm, are available by clicking on the "Explosion Proof" tab below.

The benefits of CRVpro pumps are:

  • reduced risk of chemical attacks and oil breakdown by diluting chemical vapors with a larger oil chamber
  • slowing down corrosion by cool running operation
  • provides a measure of protection from sublimed chemical vapors with coating on pump module and oil case.

These benefits lead to extended service interval.

Depending on model, motor options include 1 Ph TEFC,  3 Ph TEFC,  and 1 Ph ex proof motors.

Welch vacuum pump oil is specifically formulated for the unique needs of vacuum pumps. Use of non-Welch vacuum pump oil voids any performance claims and product warranties.

In Duoseal belt driven rotary vane pumps, use Welch Duoseal or Welch Gold Oil

In CRVpro rotary vane pumps use Welch premium or Welch gold oil

In Chemstar belt driven rotary vane pumps use Welch gold oil


CRVpro vacuum pumps can be used for 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, vessel/chamber evacuation. CRVpro vacuum pumps prepared with perfluoropolyether (PFPE) for oxygen service are available. Contact your local Welch sales representative for details on PFPE prepared pumps and for selecting correct vacuum pump for your application.


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 Sub-Categories
Accessories
CRVpro
Explosion Proof
Service Kits
  
 Products (Total Items: 24)
 
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Welch CRVpro4 XPRF - CRVpro4 PUMP 115/230V 60Hz XPRF
Welch CRVpro4 XPRF - CRVpro4 PUMP 115/230V 60Hz XPRF

$4,075.00

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Welch CRVpro8 XPRF - CRVpro8 PUMP 115/230V 60Hz XPRF
Welch CRVpro8 XPRF - CRVpro8 PUMP 115/230V 60Hz XPRF

$4,590.00

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Welch CRVpro16 XPRF - CRVpro16 PUMP 115/230V 60Hz XPRF
Welch CRVpro16 XPRF - CRVpro16 PUMP 115/230V 60Hz XPRF

$5,620.00

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Welch ProBoost Air-Cooled Diffusion Pump ProBoost - PROBOOST PUMP, 115V
Welch ProBoost Air-Cooled Diffusion Pump ProBoost - PROBOOST PUMP, 115V

$3,485.00

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Welch ProBoost Air-Cooled Diffusion Pump ProBoost - PROBOOST PUMP, 230V
Welch ProBoost Air-Cooled Diffusion Pump ProBoost - PROBOOST PUMP, 230V

$3,485.00

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Welch CRV PRO 2 - CRVpro2 VAC PUMP 1.8 CFM 115V
Welch CRV PRO 2 - CRVpro2 VAC PUMP 1.8 CFM 115V

$2,770.00

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Welch CRV PRO 2 - CRVpro2 VAC PUMP 42 l/min  230V
Welch CRV PRO 2 - CRVpro2 VAC PUMP 42 l/min 230V

$2,770.00

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Welch CRV PRO 4 - 3041-01: CRVpro4 VAC PUMP 2.8 CFM 115V 50/60HZ
Welch CRV PRO 4 - 3041-01: CRVpro4 VAC PUMP 2.8 CFM 115V 50/60HZ

$3,160.00

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Welch CRV PRO 4 - CRVpro4 VAC PUMP 230V 50/60HZ
Welch CRV PRO 4 - CRVpro4 VAC PUMP 230V 50/60HZ

$3,160.00

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Welch CRV PRO 4 - CRVpro4 PUMP 3 PH, 50/60Hz
Welch CRV PRO 4 - CRVpro4 PUMP 3 PH, 50/60Hz

$3,265.00

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Welch CRV PRO 6 - CRVpro6 VAC PUMP 4.2 CFM 115V 50/60HZ
Welch CRV PRO 6 - CRVpro6 VAC PUMP 4.2 CFM 115V 50/60HZ

$3,465.00

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Welch CRV PRO 6 - CRVpro6 VAC PUMP 230V 50/60HZ
Welch CRV PRO 6 - CRVpro6 VAC PUMP 230V 50/60HZ

$3,465.00

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SMC Pneumatics, SMCEtech, Etech, SMC Now and SMC USA are marks currently or in the past used by the SMC Corporation of America. We have no affiliation with Air Logic division of Knapp manufacturing. Product selection is the sole responsibility of the user, regardless of any recommendations or suggestions made by the factory. The user shall make selections based upon their own analysisand testing with regard to function, material compatibility and product ratings. Proper installation, operation and maintenance are also required to assure safe, trouble free performance.
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