Welch – Belt-Driven Vacuum Pump DuoSeal

DuoSeal Vacuum Pumps are known for their ruggedness world-wide. These rotary vane pumps have large oil reservoirs to dilute contaminants. Low pump rpm reduces friction and wear while minimizing reservoir temperature to lessen chemical reactivity. Pump can be ordered with an optional exhaust filter to control oil mist.

Welch DuoSeal & Chemstar Belt Drive High Vacuum Pumps

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  • 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

Additional information


1402B-01 Belt-Drive 5.6 CFM, 1376B-01 Belt-Drive 10.6 CFM, 1397B-01 Belt-Drive 17.CFM, 1374B-01 Belt-Drive 23 CFM, 1405B-01 Belt-Drive 3.2 CFM



Welch provides state-of-the-art vacuum pumps for numerous applications in chemical and biological laboratories, as well as for high vacuum manufacturing, air-conditioning and refrigeration.