Diaphragm Pumps
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 |