What are they good for?
I think that was a song in the 60's. Anyway ran across this today on one of my indoor pool heat pump people. Pump was just repaced by the pool guy. Never knew this kind of fitting existed.
I'm made my share of money repiping the pool people's piping, especially on the pumps.
It's proper and necessary to run a length of discharge pipe at least 3 times the size of the discharge opening before a bend is made. This allows the water to someone stabalized before causing it to go through a turn.
I've repiped so many systems that were piped this way and have reduced the amp draw of the pumps motors as well as made the heat exchange in the heat exchanger much more productive.