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  1. Home
  2. Products
  3. 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
Chemical Duty Diaphragm Vacuum Pumps and Systems subcategories
  • BTpro BTpro
  • Dryfast Dryfast
  • Explosion Proof Motor Explosion Proof Motor
  • High Capacity High Capacity
  • Self Cleaners Self Cleaners
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Products [25]

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Welch BTpro 40 Diaphragm Pump - BT-40 VAC PUMP 15 TORR 40 LPM
Welch BTpro 40 Diaphragm Pump - BT-40 VAC PUMP 15 TORR 40 LPM
$1,805.00
In Stock.
Add To Cart Add to Cart
Welch BTpro 70 Diaphragm Pump - BT-70 VAC PUMP 15 TORR 70 LPM
Welch BTpro 70 Diaphragm Pump - BT-70 VAC PUMP 15 TORR 70 LPM
$3,350.00
In Stock.
Add To Cart Add to Cart
Welch BTpro 100 Diaphragm Pump with cUL - BTpro 100, 115V  PTFE diaphragm pump
Welch BTpro 100 Diaphragm Pump with cUL - BTpro 100, 115V PTFE diaphragm pump
$4,705.00
In Stock.
Add To Cart Add to Cart
Welch BTpro 170 Diaphragm Pump with cUL - BTpro 170, 115V  PTFE diaphragm pump
Welch BTpro 170 Diaphragm Pump with cUL - BTpro 170, 115V PTFE diaphragm pump
$5,240.00
In Stock.
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Welch Diaphragm Pump with Explosion Proof Motor 2085 - 2085 1-stage Vacuum Pump with Explosion Proof Motor
Welch Diaphragm Pump with Explosion Proof Motor 2085 - 2085 1-stage Vacuum Pump with Explosion Proof Motor
$7,140.00
In Stock.
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Welch Diaphragm Pump with Explosion Proof Motor 2090 - 2090 2-stage Vacuum Pump with Explosion Proof Motor
Welch Diaphragm Pump with Explosion Proof Motor 2090 - 2090 2-stage Vacuum Pump with Explosion Proof Motor
$7,140.00
In Stock.
Add To Cart Add to Cart
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
$4,780.00
In Stock.
Add To Cart Add to Cart
Welch High Capacity 2054 - PTFE PUMP 115V 60/50HZ 6 TORR 100 LPM
Welch High Capacity 2054 - PTFE PUMP 115V 60/50HZ 6 TORR 100 LPM
$5,220.00
In Stock.
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Welch High Capacity 2062 - PTFE PUMP 115V 60HZ 1.5 TORR 119 LPM
Welch High Capacity 2062 - PTFE PUMP 115V 60HZ 1.5 TORR 119 LPM
$5,980.00
In Stock.
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Welch High Capacity 2064 - PTFE PUMP 115V 60HZ 6 TORR 174 LPM
Welch High Capacity 2064 - PTFE PUMP 115V 60HZ 6 TORR 174 LPM
$6,665.00
In Stock.
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Welch High Capacity 2067 - PTFE PUMP 115V 60HZ 56 TORR 221 LPM
Welch High Capacity 2067 - PTFE PUMP 115V 60HZ 56 TORR 221 LPM
$7,505.00
In Stock.
Add To Cart Add to Cart
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
$4,315.00
Back Order.
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