Product category:
Pumps, Vacuum pumps
News Release from: Gardner Denver Welch | Subject: Self-cleaning dry vacuum system
Edited by the Processingtalk Editorial
Team on 02 May 2006
Programmable self-cleaning dry vacuum
system
Just set it and walk away! Welch's new programmable 2 torr self-cleaning dry vacuum system is ideal to use with rotary evaporators, concentrators and gel dryers
Welch's new programmable 2 torr self-cleaning dry vacuum system is ideal to use with rotary evaporators, concentrators and gel dryers Welch introduces the latest in dry vacuum pump and vacuum control technology for your laboratory
This article was originally published on Processingtalk on 25 May 2004 at 8.00am (UK)
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The new intelligent self-cleaner is a fully integrated vacuum pump and controller.
The intuitive design incorporates a numeric keypad and electronic variable control valve for precise/reproduceable vacuum control with programmable dual set points, timer, memory, repeat and anti-bumping functions.
The corrosion resistant PTFE (oil-free) diaphragm pump and distinctive self-cleaning purge that automatically runs for two minutes at shutdown to rid the pump of residue - ensures longer diaphragm service life and reduced downtime by cleaning the pump at the correct time - when the process is finished.
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The new walk-away Welch 2 torr self-cleaning dry vacuum system is ideal to use with a rotary evaporator for stripping high-boiling-point solvents <160C such as DMF or low boiling point solvents such as methylene chloride when using the integrated vacuum controller.
The system has a patent-pending two-stage, flexible diaphragm pump that resists chemical vapours thanks to fluorinated plastics used on all wetted surfaces - including the diaphragm itself.
This pump is oil-free yet delivers a vacuum to 2 torr (2.7 mbar, 266 Pa) with a free air displacement of 35L/min (1.2 CFM).
The programmable self-cleaning dry vacuum system is fully equipped with several added protective features.
Features include a glass inlet separator that helps prevent the pump from ingesting liquids or particulates; a fully integrated vacuum controller that can store up to five program settings to allow hand free operation; and an exhaust separator that collects any liquid droplets or particulates flushed from the pump during the purge cycle.
An adjustable vacuum control knob, numeric key pad and up/down arrows ensure precise vacuum control.
A feature especially useful when pumping low-boiling point solvents to minimize foaming or bumping within a flask is the one touch bumping/anti-foaming button.
System includes easy to read lighted display screen, ease of use control knob and numeric key pad to quickly set and forget in either auto or manual modes, an intake and exhaust capture jars, and an automatic fresh air purge that cleans the system after each use and extends the life of the diaphragms.
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