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Home>Welch Vacuum>Chemical Duty Diaphragm Vacuum Pumps and Systems
 

Chemical Duty Diaphragm Vacuum Pumps and Systems

Clean operation (oil free), low cost of ownership, highest reliability these are just a few benefits that customers can appreciate when they use a diaphragm pump for laboratory or industrial applications. With a broad range of diaphragm pumps ultimate vacuum from 75 to 1 mbar and peak flow rates up to 138 l/min Welch offers specific pump families and models for a variety of uses.


Diaphragm pumps work completely without oil which has several advantages for the user:

  • Less maintenance compared to other technologies saves time and money
  • Dry vacuum allows cleaner workplace and environment
  • Uncontaminated pumping of gases results in cleaner samples and no risk of oil back-streaming


Overview of Welch Diaphragm Pump Families

DryFast BTpro
Self-Cleaners
High-Capacity
XPRF
Free Air Displacement, cfm
0.9 to 2.5 1.4 to 6 1.2 2.3 to 7.8 4.5 to 6.9
Ultimate Vacuum, torr 40 to 9
15 to 6
9 to 2
56 to 1.5 100 to 25
Chemical Resistant? Yes
Yes
Yes
Yes
Yes
Self-Cleaning Feature? No
No
Yes
No
No
Tunable Vacuum? Yes Select Models Yes
No
No
Explosion-Proof Motor?
No No
No
No
Yes
 Sub-Categories
BTpro
Dryfast
Explosion Proof Motor
High Capacity
Self Cleaners
 
 Products (Total Items: 22)
 
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Welch Self Cleaning Vacuum System 2025 - 202501: SELF CLEANING DRY VACUUM SYSTEM 115V/60HZ,CSA
Welch Self Cleaning Vacuum System 2025 - 202501: SELF CLEANING DRY VACUUM SYSTEM 115V/60HZ,CSA

$4,190.00

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Welch Self Cleaning Vacuum System 2026 - 202601: SELF CLEANING DRY VACUUM SYSTEM 115V/60HZ,(2 TORR)
Welch Self Cleaning Vacuum System 2026 - 202601: SELF CLEANING DRY VACUUM SYSTEM 115V/60HZ,(2 TORR)

$4,925.00

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Welch Self Cleaning Vacuum System 2027 - 202701: SELF CLEANING DRY VACUUM SYSTEM 115V/60HZ,(DIGI)
Welch Self Cleaning Vacuum System 2027 - 202701: SELF CLEANING DRY VACUUM SYSTEM 115V/60HZ,(DIGI)

$5,250.00

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Welch Self Cleaning Vacuum System 2028 - 202801: SELF CLEANING DRY VACUUM SYSTEM, Programmable
Welch Self Cleaning Vacuum System 2028 - 202801: SELF CLEANING DRY VACUUM SYSTEM, Programmable

$6,625.00

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Welch DryFast Collegiate Diaphragm Pump 2014 - 2014 DRYFAST 115V, 60HZ, 25LPM, 40TORR
Welch DryFast Collegiate Diaphragm Pump 2014 - 2014 DRYFAST 115V, 60HZ, 25LPM, 40TORR

$1,765.00

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Welch DryFast Ultra Diaphragm Pump 2032 - DRY PUMP / DRYFAST ULTRA 2 TORR, 25 LPM
Welch DryFast Ultra Diaphragm Pump 2032 - DRY PUMP / DRYFAST ULTRA 2 TORR, 25 LPM

$3,560.00

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Welch DryFast Diaphragm Pump 2034 - DRY PUMP / DRYFAST 9 TORR, 25 LPM
Welch DryFast Diaphragm Pump 2034 - DRY PUMP / DRYFAST 9 TORR, 25 LPM

$2,500.00

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Welch DryFast Diaphragm Pump 2037 - 2037 DRY PUMP / DRYFAST 35 TORR, 50 LPM
Welch DryFast Diaphragm Pump 2037 - 2037 DRY PUMP / DRYFAST 35 TORR, 50 LPM

$2,750.00

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Welch DryFast Diaphragm Pump 2042 - DRY PUMP / DRYFAST ULTRA 2 TORR, 35 LPM, 115V
Welch DryFast Diaphragm Pump 2042 - DRY PUMP / DRYFAST ULTRA 2 TORR, 35 LPM, 115V

$4,020.00

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Welch DryFast Diaphragm Pump 2044 - DRY PUMP / DRYFAST 9 TORR, 35 LPM
Welch DryFast Diaphragm Pump 2044 - DRY PUMP / DRYFAST 9 TORR, 35 LPM

$2,910.00

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Welch DryFast Diaphragm Pump 2047 - DRY PUMP / DRYFAST 35 TORR, 70 LPM
Welch DryFast Diaphragm Pump 2047 - DRY PUMP / DRYFAST 35 TORR, 70 LPM

$3,245.00

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Welch High Capacity 2052 - PTFE PUMP 115V 60/50HZ 1.5 TORR 65 LPM
Welch High Capacity 2052 - PTFE PUMP 115V 60/50HZ 1.5 TORR 65 LPM

$4,640.00

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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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