I have a 10 year old Hayward Tristar 1hp 1.85 sf currently in use but want to pull and set aside for a spare. I would like to be able to slide in a 2 speed Xtreme Power without any replumbing...hoping union threads from existing will screw right on to the Xtreme power pump. FYI both pumps are 2" pipe.
Hayward pump union threads same as Extreme power?
- Thread starter willygee
- Start date
- Jul 3, 2013
- 9,028
- Pool Size
- 15000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool SJ-40
I didn't take measurements, but I have a Sta-Rite (Pentair) Dynamo 1.5 single speed. I bought an ExtremePowerUS 1.5 two speed to take advantage of having two speeds and have my current pump as a spare on hand. This was the only 2 speed pump I could find this summer. It took a month to get it. Anyway, the outlet union threads were about 1/4 inch larger than my current pump and I had to use the internal threads to connect it. That was "bummer" no. 1 because I had hoped to be able to quick swap them if I ever had a problem.
Additional "bummers": When I disconnected my Sta-Rite, the gauge read 7 PSI. The XPUS read only 4 PSI on high speed. I was expecting the same 7 PSI. On low speed it squealed like it had bad bearings. I reinstalled my Sta-Rite and the gauge again read 7 PSI.
I returned it of course and more carefully read XPUS reviews after that and saw quite a few "died after a month" type reviews. The price was very low, but it seems the quality may match that low price. I also remember reading in at least one review a comment about the odd union thread size.
Additional "bummers": When I disconnected my Sta-Rite, the gauge read 7 PSI. The XPUS read only 4 PSI on high speed. I was expecting the same 7 PSI. On low speed it squealed like it had bad bearings. I reinstalled my Sta-Rite and the gauge again read 7 PSI.
I returned it of course and more carefully read XPUS reviews after that and saw quite a few "died after a month" type reviews. The price was very low, but it seems the quality may match that low price. I also remember reading in at least one review a comment about the odd union thread size.
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Thanks for the response...Hayward VS or inteliflow may be best...Pinch a Penney 20% off this week.
- Jul 3, 2013
- 9,028
- Pool Size
- 15000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool SJ-40
If the pump end is still good you could reuse it, get a repair kit and throw a V Green motor on there and have a VSP motor... then you would not have to change any pipes or fittings and still have the motor for backup 
You will need to find the correct fit for your flange ( round or square) but the 1.67 motor would be a perfect fit for your pump end..
www.inyopools.com
You will need to find the correct fit for your flange ( round or square) but the 1.67 motor would be a perfect fit for your pump end..
Century (A.O. Smith) 1.65 HP Motor, V-Green, Round Flange 56J, Variable Speed, 208-230V - Model ECM16CU - INYOPools.com
V-Green 1.65 HP Round Flange 56J Variable Speed Motor - ECM16CU
www.inyopools.com