I have a leak on the pump's suction inlet side.
For years I have periodic leaks on the pump's inlet and outlet connections, sometimes it leaks, sometimes it self corrects then come back a year later. Often times I would have to take the connections apart and put in a new male adapter and used liberal amounts of tape and pipe sealant to get seal, only to come back with a new leak after a few months.
Finally, the last time I had a leak on the outlet side, I tried a different fitting. Instead of thread in a 2" PVC male adapter, I bought a high temp union that seals with a gasket. It has not leaked for over 6 months now, and if it does, I can easily take it apart at the union and tighten it.
So now the inlet side is leaking again, and my plan is to use a high temp union there as well.

However, if I am redoing the piping there, may be I can redo the upstream connection to the Jandy valve too, which is a 2" male/female threaded connection. That connection may also leak one day. The male adapter was solvent welded into the valve outlet port, then a female adapter connection to it. If this connection is to leak, I will have to connect with a new female adapter fitting, then solvent weld all new pipe and fittings to the pump's inlet correct?

So I am thinking, if I can find a way to use a high temp union there I can simplify this connection for the future. I understand that the Jandy valve port I can solvent weld a new 2.5" PVC fitting to it on the outside. If this is correct then I can cut the existing male adapter off flush with the valve port. Solvent weld a 2.5" coupling onto it, insert a 2.5" SLIP X 2" FIP bushing into the other end of the coupling, then I can connect to it a 2" high temp union on this connection as well. Will this work? That would allow me to get rid of the union in the middle of the vertical pipe too if I have a union on each end of the connections.
For years I have periodic leaks on the pump's inlet and outlet connections, sometimes it leaks, sometimes it self corrects then come back a year later. Often times I would have to take the connections apart and put in a new male adapter and used liberal amounts of tape and pipe sealant to get seal, only to come back with a new leak after a few months.
Finally, the last time I had a leak on the outlet side, I tried a different fitting. Instead of thread in a 2" PVC male adapter, I bought a high temp union that seals with a gasket. It has not leaked for over 6 months now, and if it does, I can easily take it apart at the union and tighten it.
So now the inlet side is leaking again, and my plan is to use a high temp union there as well.

However, if I am redoing the piping there, may be I can redo the upstream connection to the Jandy valve too, which is a 2" male/female threaded connection. That connection may also leak one day. The male adapter was solvent welded into the valve outlet port, then a female adapter connection to it. If this connection is to leak, I will have to connect with a new female adapter fitting, then solvent weld all new pipe and fittings to the pump's inlet correct?

So I am thinking, if I can find a way to use a high temp union there I can simplify this connection for the future. I understand that the Jandy valve port I can solvent weld a new 2.5" PVC fitting to it on the outside. If this is correct then I can cut the existing male adapter off flush with the valve port. Solvent weld a 2.5" coupling onto it, insert a 2.5" SLIP X 2" FIP bushing into the other end of the coupling, then I can connect to it a 2" high temp union on this connection as well. Will this work? That would allow me to get rid of the union in the middle of the vertical pipe too if I have a union on each end of the connections.