Replumbing question

el duderino

Well-known member
Jun 15, 2008
120
Austin, TX
#1
I have had a lot of issues priming my single speed 1.5hp Pentair Whisperflo pump over the years and have had the inlets and outlets replumbed several times. The last plumber hard plumbed the pipes not leaving much (any) room to splice in again that I can see.

I'm considering putting a union back on the outlet side to stop the leaking that is currently happening, but not sure how/where to splice in.

Any suggestions are very welcomed!




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el duderino

el duderino

Well-known member
Jun 15, 2008
120
Austin, TX
#2
Ps, there is not a union there now. It is self bonding tape which I applied to attempt to slow/stop the leak. It did not work btw :)


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Richard320

TFP Expert
LifeTime Supporter
Jan 6, 2010
20,330
San Dimas, CA (LA County)
#3
I can't tell from the picture whether the 3 way valve is connected with an internal or an external coupling. Those valves are dual-sized, so if it's internal, just saw it off at the valve and replace that whole L-shaped section. Put a larger coupling, then a reducer, and go. Or stay larger until after the elbow, then reduce at the pump.
 

Jimrahbe

Mod Squad
TFP Expert
LifeTime Supporter
Jul 7, 2014
10,885
Bedford, TX
#4
el,

I think it should be a crime to install pumps without pump unions... :p

I'd install this basic type which has an O-Ring on the threaded side....



I'd cut the pipe up near the valve where you have the most 2" pipe exposed..

Thanks,

Jim R.
 
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el duderino

el duderino

Well-known member
Jun 15, 2008
120
Austin, TX
#5
I can't tell from the picture whether the 3 way valve is connected with an internal or an external coupling. Those valves are dual-sized, so if it's internal, just saw it off at the valve and replace that whole L-shaped section. Put a larger coupling, then a reducer, and go. Or stay larger until after the elbow, then reduce at the pump.
It's plumbed external on that part of the 3-way:-(


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el duderino

el duderino

Well-known member
Jun 15, 2008
120
Austin, TX
#6
el,

I think it should be a crime to install pumps without pump unions... :p

I'd install this basic type which has an O-Ring on the threaded side....

I'd cut the pipe up near the valve where you have the most 2" pipe exposed..

Thanks,

Jim R.
Jim,

I agree! I have some of those very unions on the way just not sure how I'm gonna make it work. I'm not sure there's enough 2" exposed to connect union.


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el duderino

el duderino

Well-known member
Jun 15, 2008
120
Austin, TX
#7
Would it be possible to cut out the reducer and go from there? I've never done that but heard it's possible.


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borjis

LifeTime Supporter
Aug 19, 2014
2,673
Pacific NW
#9
el,

I think it should be a crime to install pumps without pump unions... :p
Jim I WHOLEHEARTEDLY AGREE!

I've noticed, the last 2 big services I've had done (replaced multiport and heater) both
service techs installed unions. (thank god!)

I see a new pool build with no unions on the pumps or heater and think what the heck!?!

I would insist on unions for a new build for sure.
 
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el duderino

el duderino

Well-known member
Jun 15, 2008
120
Austin, TX
#10
I also wonder if I cut as close to the valve as possible, if the internal connection would be open. I may need to go take some measurements.


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