water aspirator

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wa·ter as·pi·ra·tor

a water-operated jet ejector pump commonly used as a laboratory suction pump.
References in periodicals archive ?
Here's a big, big hint: your water aspirators, despite being a common way of creating low-strength vacuum for many standard laboratory applications, are known contributors to water waste and contamination.
When one considers the number of facilities with multiple water aspirators in operation, these numbers can become staggering.
Standalone pumps, such as diaphragm vacuum pumps, provide an alternative to house vacuum systems and water aspirators
A far less expensive and more effective alternative to the water aspirators exists in the form of compressed air.
These dry, oil-free pumps replace older, resource-polluting equipment such as oil-type rotary-vane pumps and water aspirators with models that require virtually no maintenance, pump oil, water or drain.