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    • WelchNet Modular Vacuum Network
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  1. Home
  2. Products
  3. Belt-Drive Rotary Vane Vacuum Pumps

Belt-Drive Rotary Vane Vacuum Pumps

Welch Belt-drive vacuum pumps are known for their ruggedness world-wide in the most demanding applications.

Key features making these pumps so reliable and durable:

  • Low pump rpm to reduce frictional wear while minimizing reservoir temperature to lessen chemical activity
  • High oil feed to pump models leads to  cleanest oil lubricating the internal pump module
  • Large oil reservoirs dilute contaminants ingested into the pump

Belt-drive vacuum pump are available in three types: DUOSEAL, CHEMSTAR and CAPTURE.

DUOSEAL vacuum pumps are used in most common lab and industrial applications.  DUOSEAL pumps are available in 6 models of two-stage vacuum pumps and 2 models of one-stage pumps.

CHEMSTAR pumps are designed to tolerate harsh chemical contamination with vital parts corrosion resistant and uses Welch Gold oil, a synthetic pump oil designed to resist chemical attack.

CAPTURE pump is used for refrigerant recovery and transfer.

On special requests, both  DUOSEAL and CHEMSTAR vacuum pumps can be fomblinized for oxygen service.

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


Applications: Schlenk lines, freeze dryers, glove boxes, degassing, vacuum ovens, high boiling point distillations,  HVAC service.  

Belt-Drive Rotary Vane Vacuum Pumps subcategories
  • Capture Capture
  • ChemStar ChemStar
  • DuoSeal DuoSeal
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Products [33]

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Welch Refrigeration CRR-1 - CAPTURE, PUMP 115V 60HZ 1PH, 10.6CFM
Welch Refrigeration CRR-1 - CAPTURE, PUMP 115V 60HZ 1PH, 10.6CFM
$5,775.00
In Stock.
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Welch ChemStar 1376N - CHEMSTAR PUMP UNMOUNTED
Welch ChemStar 1376N - CHEMSTAR PUMP UNMOUNTED
$5,775.00
In Stock.
Add To Cart Add to Cart
Welch ChemStar 1376N - CHEMSTAR  PUMP  115V 60HZ 1PH
Welch ChemStar 1376N - CHEMSTAR PUMP 115V 60HZ 1PH
$6,410.00
In Stock.
Add To Cart Add to Cart
Welch ChemStar 1376N - CHEMSTAR MOUNTED PUMP 230V, 60HZ, 1PH
Welch ChemStar 1376N - CHEMSTAR MOUNTED PUMP 230V, 60HZ, 1PH
$6,555.00
In Stock.
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Welch ChemStar 1400N - CHEMSTAR PUMP UNMOUNTED
Welch ChemStar 1400N - CHEMSTAR PUMP UNMOUNTED
$2,820.00
In Stock.
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Welch ChemStar 1400N - CHEMSTAR PUMP 115/60 1PH N.AMERICAN PLUG
Welch ChemStar 1400N - CHEMSTAR PUMP 115/60 1PH N.AMERICAN PLUG
$3,165.00
In Stock.
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Welch ChemStar 1400N - CHEMSTAR 115V 60Hz 1Ph EXPL.PROOF MOTOR
Welch ChemStar 1400N - CHEMSTAR 115V 60Hz 1Ph EXPL.PROOF MOTOR
$4,020.00
In Stock.
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Welch ChemStar 1402N - CHEMSTAR UNMOUNTED PUMP
Welch ChemStar 1402N - CHEMSTAR UNMOUNTED PUMP
$4,285.00
In Stock.
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Welch ChemStar 1402N - CHEMSTAR MOUNTED PUMP, 115V,60HZ,1PH CSA
Welch ChemStar 1402N - CHEMSTAR MOUNTED PUMP, 115V,60HZ,1PH CSA
$4,565.00
In Stock.
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Welch ChemStar 1402N - CHEMSTAR MOUNTED PUMP  230V, 60HZ, 1PH
Welch ChemStar 1402N - CHEMSTAR MOUNTED PUMP 230V, 60HZ, 1PH
$4,885.00
In Stock.
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Welch ChemStar 1402N - CHEMSTAR 1402N-01 W/EXPL MOTOR
Welch ChemStar 1402N - CHEMSTAR 1402N-01 W/EXPL MOTOR
$5,720.00
Back Order.
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Welch DuoSeal 1374 - DUOSEAL, MOUNTED PUMP 115V, 60HZ, 1PH
Welch DuoSeal 1374 - DUOSEAL, MOUNTED PUMP 115V, 60HZ, 1PH
$8,720.00
In Stock.
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