Here's another weird FPH issue. These are identical union fittings, 1.5" slip according to the manual. Doing a dry fit test, the bottom one is clearly the right size. A piece of 1.5" pipe goes in with resistance. It's definitely a tight fit, which is what you want (full contact for the cement).
The top one is nominally the same size, and has the same markings on the body. But the dry fit is loose. The same pipe goes in and out with no resistance and doesn't fully contact the fitting. I'm afraid that if I cement this, it will not form a proper seal.
Is this a typical issue, something with an easy workaround, or is it likely a manufacturing defect on this fitting?
As a fallback: the outside of the union seems to fit tightly (VERY tightly) into a 2" coupling. It's probably meant to be a hybrid 1.5/2" union, like the Haywards. So I could plumb this section in 2" if necessary.
Video: 20210922_214531
Also I made the video using a little piece of scrap flex because that's what I had handy, but I tried earlier with a longer piece of straight pipe and it was exactly the same.
The top one is nominally the same size, and has the same markings on the body. But the dry fit is loose. The same pipe goes in and out with no resistance and doesn't fully contact the fitting. I'm afraid that if I cement this, it will not form a proper seal.
Is this a typical issue, something with an easy workaround, or is it likely a manufacturing defect on this fitting?
As a fallback: the outside of the union seems to fit tightly (VERY tightly) into a 2" coupling. It's probably meant to be a hybrid 1.5/2" union, like the Haywards. So I could plumb this section in 2" if necessary.
Video: 20210922_214531
Also I made the video using a little piece of scrap flex because that's what I had handy, but I tried earlier with a longer piece of straight pipe and it was exactly the same.
