Discharge Venturi ?

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I bought a new pump and it says it has a discharge venturi.

Please explain what this is and it's purpose ?
 
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It should be a fitting (perhaps) with a slight restriction in it's diameter, and a small hole (& airline connector) close to the restriction. This creates suction at the small hole when the pump is operating, sucking in air if the hole's nipple is exposed to air (or has an airline going up to the water's surface)

All Venture-type skimmers use this principle to suck air into the skimmer pump, thus creating the bubbles which makes the skimmers work.

Here are some links:

http://en.wikipedia.org/wiki/Venturi_effect

http://www.ce.utexas.edu/prof/KINNAS/319LAB/Applets/Venturi/venturi.html

Hennie
 
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If I don't use venturi, can this small outlet be used to drive a reactor ?
 
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It will also pull water, although not very strongly, so yes, you would be able to use it to suck water through a reactor if everything is close to water level. I use this to circulate water through my calcium reactor.

Hennie
 

dallasg

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If I don't use venturi, can this small outlet be used to drive a reactor ?
It will also pull water, although not very strongly, so yes, you would be able to use it to suck water through a reactor if everything is close to water level. I use this to circulate water through my calcium reactor.

Hennie
great idea, got DIY potential
 

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