Q: Pump Outputs

Chris · Joined: 16 Aug 2007 Posts: 7

Can i send a 3/4" ouput from a pump into 1/2" will the effect just be of
adding head to the system or is it really something not to do?

Archived from group: rec>aquaria>tech

Roger Sleet · Joined: 16 Aug 2007 Posts: 39

In article ,
chrispol@videotron.ca (Chris) wrote:

> Can i send a 3/4" ouput from a pump into 1/2" will the effect just be of
> adding head to the system or is it really something not to do?

You will increase back pressure, which is a bit like adding head to the
system. The result we be a big reduction in flow - but it won't harm the
pump. The question is why would you want to - either get a smaller pump
or a bigger pipe.

Roger Sleet
Roger's Aquatic Pages http://www.sleet.plus.com

Ian Smith · Joined: 16 Aug 2007 Posts: 16

On Wed, 24 Sep 2003 21:05:05 -0400, Chris wrote:

> Can i send a 3/4" ouput from a pump into 1/2" will the effect just be of
> adding head to the system or is it really something not to do?

If it's a centrifugal pump it won't mind - centrifugal pumps are
themselves happy up to back pressures such that there is no flow
through them.

Some other pumps may be upset by increasing back-pressure above what
they are intended for, but the pressure you'll be adding i sprobably
low enough it won't be a big problem.

regards, Ian SMith
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