By Waterco



Part # 4590-25

Manufacturer Code 122243B

Dimensions 2-1/2" x 1-3/8"

Alternate Part #'s 122243B, 89-252-1100, WC122243B, 122243

Product Description

Half Barrel Union Hydron (122243)


?     Asked on 8/18/2016by Inyo Visitor

Will the #10 fittings fit to 1 1/2 inch unthreaded pvc for hard plumbing setup? Do I get two sets of #10 fittings for 13.99 or just one set? Thank You

A  Answered on 8/31/2016 by InyoPools Product Specialist Lennox H.

Hi, Yes, the unthreaded end which is called the tail end will fit 1-1/2" pvc plumbing.

?     Asked on 4/25/2017by Bryan

I have a waterco spt450 filter and valve, purchased in 2008. The part I am replacing is one of the half barrel union on the valve itself. I am hard plumbing this in finally and just want to know the nut size. The one I have measures 2 1/2 " inside to connect to the valve. I am using 1 1/2 " sch 40 pvc, so the tail NEEDS TO ACCOMODATE THAT TOO

A  Answered on 4/26/2017 by InyoPools Product Specialist Scott W.

Yes, that union is a 2.5" union that is for the Waterco T450.

?     Asked on 5/21/2018by Chris Mirabito

I have a Waterco Aquamite Model 2402200du. Will this fit for that unit?

A  Answered on 5/22/2018 by InyoPools Product Specialist Lennox H.

Hi, Chris. Yes, this Half Barrel Union will fit the Waterco Aquamite filter. 


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