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Noob question about pumps

post #1 of 14
Thread Starter 
I just got my Blueline pump today, and i wanted to test it.
I took a large glass of distilled water and tryed to suck it up with the pump...
Nothing happend. When i poured water into the pump it worked fine.

Question... Do pumps suck in water? or do i need to mount the res higher to allow the water to force itself into the pump??
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post #2 of 14
You should NEVER run a pump without water. The pump's impeller and motor needs water to operate properly. Otherwise, they can grind and burn out.

In a closed loop, the water coming out of the pump pushes the water into the pump. In an open loop, you need to feed the water into the pump.
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post #3 of 14
pumps are made to run when full of water. They need the resistance and the cooling the water provides. Also, water molecules are bound together, so when the system is bled, the water helps "pull" itself along. (very much like syphoning gas out of a car, once it starts flowing, it will keep flowing even after you stop sucking)

When you run a pump without fluid, it spins much too fast and can overheat. Always try to prime the system as much as possible before turning the pump on.
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post #4 of 14
Quote:
Originally Posted by Chromey View Post
Question... Do pumps suck in water? or do i need to mount the res higher to allow the water to force itself into the pump??

Heed the other two post. Yes the res should always come right before and be higher than the pump
post #5 of 14
Thread Starter 
Thanks Guys, Answered my questions 100%. If i had rep, i would give 1 to both of you.
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post #6 of 14
Quote:
Originally Posted by TonyL222 View Post
Heed the other two post. Yes the res should always come right before and be higher than the pump
The res does not have to come before or be higher than the pump. However, it helps bleeding and slightly improves pump performance.


Quote:
Originally Posted by Chromey View Post
Thanks Guys, Answered my questions 100%. If i had rep, i would give 1 to both of you.
You don't need rep to give rep.
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post #7 of 14
Quote:
Originally Posted by DuckieHo View Post
The res does not have to come before or be higher than the pump. However, it helps bleeding and slightly improves pump performance.
Okay, of course one can order any way one wants. But I would recommend that the res/T always come before and be higher than the pump as a rule of thumb.
post #8 of 14
A pump pushes great, it doesn't have much suction...Never run it dry, that Blueline I would put the res about 12-18" over it with a 5/8 or 3/4" suction line from the res..That way it will have a true flooded suction...I have a 5 gallon bucket res for my vertical Iwaki with a 3/4" suction line going down to it, its a sealed res, if you ran one open it would have crud growing in it in a week......

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post #9 of 14
Thread Starter 
So My swiftech Res has 1/4 threads.. Do they make a 1/4 to 3/4 nipple?
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post #10 of 14
Quote:
Originally Posted by Chromey View Post
So My swiftech Res has 1/4 threads.. Do they make a 1/4 to 3/4 nipple?
Threading has nothing to do with nipple or fitting size.

Threading is the angle and number of threads on the screw. The nipple size is how big the fitting is.


Are you looking for a G1/4" thread, 1/2" Outer Dimension fitting? This will fit tubing that has a 1/2" or 7/16" Inner Dimension.
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