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2014B-01 Diaphragm Pump

Delivery time: 1-2 weeks

$1,929.00 USD Excl. tax
$1,929.00 USD Incl. tax

Diaphragm pumps are the ideal vacuum pump for solvent distillation applications and are commonly used with rotary evaporators, vacuum filtration, and vacuum ovens. Welch DryFast™ PTFE diaphragm vacuum pumps enable precise vacuum control for organic evaporations with exclusive easy to use needle valve.

Oil-Free, portable, and chemical resistant design simplifies maintenance. Economical DryFast™ vacuum pumps are perfect for tough lab applications.


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


Model Number
Tubing Needed, I.D. in. (mm)
1/4 (7)
Ultimate Pressure
115V Order Number
Dimensions, LxWxH, in (mm)
Built-in Adjustable Vacuum
Inlet Connection
Free Air Displacement
1.2 (35)
Gas Ballast
Exhaust Connection
M14 (1/8)
Motor Power, HP (kW) at 60 Hz
1/5 (150)
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