Installing a Recirculating Pump
	Post Reply		Engineering Forum

Posted by: Johnny ® 11/17/2009, 09:01:38 Author Profile eMail author Edit

I have a piping system that is at 50 PSI, but with no flow through it. I want to tap into it near the beginning and end, use tubing to join those two taps, and add a pump in between to keep water moving through the pipe. If the discharge pressure of the pump is 100 psi, would the piping system see 150 PSI? If the pipe is only rated for 100 psi, would I have to go with a 50 PSI pump? The pipe is 10" and taps/tubing would be 3/4"

Post Reply Tell a Friend (must be logged in) Alert Admin About Post

View All

Previous | Next |

Replies to this message

: Installing a Recirculating Pump
: Installing a Recirculating Pump -- Johnny	Post Reply	Top of thread	Engineering Forum

Posted by: Johnny ® 11/19/2009, 16:24:28 Author Profile eMail author Edit

Anyone?

Post Reply Tell a Friend (must be logged in) Alert Admin About Post

Where am I? Original Top of thread

Previous | Next |

: : Installing a Recirculating Pump
: : Installing a Recirculating Pump -- Johnny	Post Reply	Top of thread	Engineering Forum

Posted by: zekeman ® 11/20/2009, 22:31:00 Author Profile eMail author Edit

First of all, pumps are not rated in "discharge pressure" but usually pump curves give pressure differential across the pump vs flow rate. So if the nominal pressure of the existing piping is 50 psi you had better make sure that the pump differential is no greater than 50 psi so the pressure won't exceed 100 psi, your pipe rating. By the way,if you want a small amount of recirculation, I question how you come up with such a large pump.

Post Reply Tell a Friend (must be logged in) Alert Admin About Post

Where am I? Original Top of thread

Previous | Next |

: : : Installing a Recirculating Pump
: : : Installing a Recirculating Pump -- zekeman	Post Reply	Top of thread	Engineering Forum

Posted by: Johnny ® 11/23/2009, 12:48:51 Author Profile eMail author Edit

This did answer my question though. Is the correct term "developed pressure" as opposed to discharge pressure?

Post Reply Tell a Friend (must be logged in) Alert Admin About Post

Where am I? Original Top of thread

Previous |   |