- May 23, 2015
- 25,706
- Pool Size
- 16000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Just note that PVC unions can be a blessing AND a curse. All unions require the presence of an o-ring to make a water tight seal, therefore leaks are always a possibility. And I would be very wary of putting a union on the suction side of a pump as suction leaks are a nuisance and o-rings only increase the chances of that nuisance showing up. Is using a threaded nipple annoying if you have to change out a pump, yeah I guess so. Bit how often are you planning to change out a pump (and, no, even in cold climates pumps can be left outdoors). But if you’re doing any significant PVC work at the pad, using a union is going to save you exactly 3 seconds on a 4 hour job … a properly installed threaded nipple will not leak and will go the distance. Certainly up to you but there is a case to be made for keeping the complexity and number of potential leaks to a minimum.