jamal November 4, 2007 November 4, 2007 i am putting in my current uv and i wanted to know should i glue the slip unions to hold them down or should i use something else
Grav November 4, 2007 November 4, 2007 Glue the slip unions to hold them down? Not sure I understand. Many UVs have a large bushing that reduces from 1.5 or even 2 inch slip down to 3/4 threaded... you need to glue them in. If you are installing PVC unions or true unions, then yes you would be gluing in the PVC pipe to either side of the union, but you don't glue the two parts of the union to each other. That seems like an obvious thing to say... I think the "hold em down" part is confusing me. Where are they gonna fly off to?
jamal November 4, 2007 Author November 4, 2007 thanx. i found the owners manual and it says glue them as well. hold them down means that the water flowing through it pushes the bushings or slip unions up.
Grav November 4, 2007 November 4, 2007 Sure. Okay so hold them "in." Are you using unions, or true unions?
jamal November 4, 2007 Author November 4, 2007 they call them slip unions. the pieces that came with the unit. they slide into the unit so that you can put pvc fittings in them. no water flow control
davelin315 November 4, 2007 November 4, 2007 Sounds like you could change it out to whatever you want. Most units have a threaded adapter at the point where the water comes in and also where it exits. You could probably change it out to whatever you want. If you stick with what you've got, you definitely have to use solvent to hold the pipes together. Last thing you want is for a pipe to slip out and drain your system... plus, it'll leak if you don't use solvent.
YBeNormal November 4, 2007 November 4, 2007 The fitting on the Current UV units is a slip fitting. For the 40w unit, the fitting was 2". I used a short piece of PVC and added a 2" PVC union to both ends of the UV unit with the threaded ring on the union installed close to the UV unit. By going with a 2" union, my thought is that I can always throttle the size down somewhere else if necessary but I will also always have an option of going 2" through the entire plumbing path. Using a union also makes it very simple to disconnect the unit for cleaning or replacement without having to redo all of the plumbing in the process.
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