Need help adapting an old style Hayward Pump, non-threaded union.

[Levetation]

I am replacing a 2007 and prior Hayward Northstar pump, SPX4020. It has the non-threaded Quad Lock unions, spx4000unpak1. The new pump is a Black and Decker variable speed pump with common 2-inch threaded unions. The output side of the pump is just going to take some re-piping with PVC pipe, no problem. The intake side of the pump is the problem. The non-threaded union butts right up to the valves requiring me to replace three valves to change to a threaded union. Is there any way to adapt from the old style, non-threaded Hayward union to a standard 2-inch threaded union?ward union to a standard 2-inch threaded union?

 

[JamesW]

The union should take a 2" coupling to the outside.

The valve will take a 2.5" union to the outside.

Use a 2 x 2.5" reducer coupling to join them.

Cut at the red line and a 2.5" coupling will fit over the valve.

 

[JamesW]

2023 BD IG VS manual 10-26-22

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2-1/2" x 2" PVC Schedule 40 Reducer Coupling
Brand:
Spears
SKU:
429-292

429-292 - Spears 429-292 - 2-1/2" x 2" PVC Schedule 40 Reducer Coupling

Spears 429-292 - 2-1/2" x 2" PVC Schedule 40 Reducer Coupling - PVC Schedule 40 Coupling

www.supplyhouse.com

 

[JamesW]

The union should take a 2" coupling to the outside.

The valve will take a 2.5" union to the outside.

Use a 2 x 2.5" reducer coupling to join them.

 

[Levetation]

The union should take a 2" coupling to the outside.

The valve will take a 2.5" union to the outside.

Use a 2 x 2.5" reducer coupling to join them.

Cut at the red line and a 2.5" coupling will fit over the valve.

View attachment 618755

Thank you for the quick reply. The OD of the valve is 2.75". Do you know of a 2.75" to 2" reducer?

 

[JamesW]

The OD of the valve is the same as the OD of 2.5" PVC pipe.

A 2.5" coupling will work.

 

[JamesW]

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Help Support TFP Trouble Free Pool is run by a dedicated group of volunteers that … Read more…

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[1poolman1]

The union should take a 2" coupling to the outside.

The valve will take a 2.5" union to the outside.

Use a 2 x 2.5" reducer coupling to join them.

Cut at the red line and a 2.5" coupling will fit over the valve.

View attachment 618755

Cut the old Hayward part off flush with the valve. Install a 2" pipe extender. Attach the new union to it. The very-short reduction in the inside diameter will have no affect on water-flow.

 

[JamesW]

The new pump will be about 3/8" low, so you might want to get a 3/8" sheet of rubber as a pad and spacer.

https://mag.pioneerfamilypools.ca/media/mageworx/downloads/attachment/file/n/o/northstarmanual.pdf

 

[Levetation]

TFP is a registered 501(c)3 non-profit that is maintained by user donations.

All of our content is free of advertisements.

Please consider donating at:

Become a TFP Supporter

Help Support TFP Trouble Free Pool is run by a dedicated group of volunteers that … Read more…

www.troublefreepool.com

Ok, I just donated.

 

[Levetation]

The OD of the valve is the same as the OD of 2.5" PVC pipe.

A 2.5" coupling will work.

View attachment 618777

Thanks again, I think I like the idea of a 2 x 2.5" reducer best. I haven't found one yet. I guess I could use a 2.5" coupler and a bushing. I am still looking for 2.5" PVC pressure fittings. Do you know a good source?

 

[ajw22]

.

 

[JamesW]

429-292 - Spears 429-292 - 2-1/2" x 2" PVC Schedule 40 Reducer Coupling

Spears 429-292 - 2-1/2" x 2" PVC Schedule 40 Reducer Coupling - PVC Schedule 40 Coupling

www.supplyhouse.com

2-1/2" x 2" Schedule 40 (S x S) 429-292 | Sch 40 Couplings

2-1/2" x 1-1/2" Schedule 40 (S x S) 429-291 PVC Reducing Coupling at PVC Fittings Online and receive huge savings on all Schedule 80 CPVC, Schedule 80 PVC and Schedule 40 PVC fittings

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[JamesW]

Brand: Spears
SKU: 429-292

 

[JamesW]

SPEARS MANUFACTURING CO. 429-292 2.5"s X 2"s White Reducing Coupling Socket Sch 40 Pvc

Buy SPEARS MANUFACTURING CO. 429-292 2.5"s X 2"s White Reducing Coupling Socket Sch 40 Pvc online at DKHardware.com. Our Pool & Patio category offers a great selection of Fittings - PVC products at the best price!

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