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March 2003

2003.03.01

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Creating Suction from Airflow - Venturi Vacuum
By Jim Cook

Robinaire Manufacturing Corp., a supplier of refrigeration repair tools,
makes a small venturi vacuum pump which uses shop air (100 to 150 psi)
to evacuate refrigeration systems.  It is, however a low volume, high
vacuum pump, and it would not be suitable for driving pipes.  It emits
the noise of air escaping as it is working.

I like it because it requires virtually no maintenance, as compared to
electric vacuum pumps which require regular oil changes and eventually
wear out anyway.

Jim Cook

(Message sent Sun 2 Mar 2003, 01:51:31 GMT, from time zone GMT-0800.)

Key Words in Subject: Airflow, Creating, Suction, Vacuum, Venturi

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