Replacing pump unions

[tim_pool_fan]

I’ve purchased a CircuPool SmartFlo 3hp pump to replace my failed Jandy PHPM2.0 and everything was going great. I even removed the filter and raised the plastic pad to add some gravel and get it level again!! I had the pump in position and confirmed the input/output ports lined up exactly and so all I had to do was screw on the previous Jandy fittings to the new pump when low and behold it turns out they are just slightly different in size!!! So now I’m faced with removing PVC fittings.
Any tricks to removing these or is my only option to cut them off and add new fittings? My struggle is the previous configuration does t leave barely any wiggle room for a new connection on the outbound port.

I’m not a plumber so any advice is welcome!!

 

[proavia]

Manufacturer supplied pump unions on some pumps are proprietary and are not interchangeable.

Chances are you will need to remove the old Jandy union fittings and install the ones supplied with your new pump.

 

[HermanTX]

this is my suggestions
On the suction side It appears straight forward to cut off the union, use a coupling and add another short piece of straight pipe to make it all fit. However, I would measure this last. Do the exit side of pump first.
If you have a heat gun you can remove that small straight from the Tee fitting. First cut the union off. Then heat the remainder of the short straight pipe slowly. Take a pliers and as the pipe softens near the Tee fitting twist it and it will pull away from the ID of the Tee fitting. Do not heat the Tee directly, focus the heat on the short pipe from the inside of the Tee fitting.
If you have some extra pipe, do some practice so you see how it reacts.
See photo
Then clean up the ID of the Tee if required with light sandpaper, put the pump in place and put a short straight with the new union. Remember to dry fit it, ensure it all tightens up properly then glue the union to the straight piece and the straight piece to the Tee fitting

Then proceed to the suction side doing the same with a dry fit then glue the union, straight pipe and union.
Good Luck.

 

[tim_pool_fan]

this is my suggestions
On the suction side It appears straight forward to cut off the union, use a coupling and add another short piece of straight pipe to make it all fit. However, I would measure this last. Do the exit side of pump first.
If you have a heat gun you can remove that small straight from the Tee fitting. First cut the union off. Then heat the remainder of the short straight pipe slowly. Take a pliers and as the pipe softens near the Tee fitting twist it and it will pull away from the ID of the Tee fitting. Do not heat the Tee directly, focus the heat on the short pipe from the inside of the Tee fitting.
If you have some extra pipe, do some practice so you see how it reacts.
See photo
Then clean up the ID of the Tee if required with light sandpaper, put the pump in place and put a short straight with the new union. Remember to dry fit it, ensure it all tightens up properly then glue the union to the straight piece and the straight piece to the Tee fitting

Then proceed to the suction side doing the same with a dry fit then glue the union, straight pipe and union.
Good Luck.

I’ve heard of heating the pipe but hadn’t considered it for the section I to the Tee as you describe. Sounds like a perfect solution!! And I just happened to have a heat gun!! Thanks.