It was recommended to me to use high temp unions for installing a new pump. How is that different from a Schedule 80 union and is it necessary.
Leslie's Pool Supply gives you a 5 year warranty on pump installations so I had them come out and give a bid and it specified the use of hi temp unions. I never asked why. Anyway the installation cost was not worth the extra warranty for me so I am going to do it myself. The 5 year warranty is nice though and better than anyone else gives.Who's recommendation? High temp unions might be a good idea when going into a heater but shouldn't be required when going into the pump. Well installed Schedule 40 is enough and rated up to temperatures of 140 F.
What pump are you getting unions for? I used this one for my IntelliFlo.
I am getting Intelliflow XF and it actually comes with unions. I was mostly curious about the virtues of the hi temp unions as I had not heard about them before.
I think if you look carefully the "5 year warranty" is on the installation, not on the pump. I'm pretty sure the pump gets the manufacturer's warranty, in Pentairs case 3 years.Leslie's Pool Supply gives you a 5 year warranty on pump installations so I had them come out and give a bid and it specified the use of hi temp unions. I never asked why. Anyway the installation cost was not worth the extra warranty for me so I am going to do it myself. The 5 year warranty is nice though and better than anyone else gives.
It certainly can't hurt and they don't seem to cost more. But what is really important is that they seal to the pump body by an O-ring.I would recommend the high temp unions. If the pump runs dry regular schedule 40 can shrink and leak.
You may be right but that is what they repeatedly told me, both a store manager and a field rep when he came out, that they extend the manufacturers warranty. If anything goes wrong with the pump they will replace it. However I never saw the extreme fine print. If anyone is interested I would suggest to check it out again.I think if you look carefully the "5 year warranty" is on the installation, not on the pump. I'm pretty sure the pump gets the manufacturer's warranty, in Pentairs case 3 years.
For installing a pump, the best unions are the kind that have a threaded fitting on one end with an O-ring (in addition to the O-ring inside the union connection). That allows sealing it to the pump without tape or other thread sealant (which, in many peoples' experience doesn't work well because many pumps have straight threads that don't properly seal against tapered fittings).