Need help replacing suction valve for pool spa

[jonnyd91]

I need to replace the valve with the broken handle with a new diverter valve, The valve the builder put on is Crud and gave me issues when they closed the pool recently. Basically the valve didnt close all the way leading to the air lock leaking and then the handle broke off.

Im going to replace it with a hayward 2" 2 way diverter valve (all my pool valves are hayward so wold like to keep it the same), I just want to confirm this is the right one - Hayward PSV2S2DGR 2-Port PSV Diverter Valve
The pipe is a 2" pvc pipe.

The other thing I want to do is put a union on the pipe for the spa pump, What is the best way to do this?
Should I just add a 2" slip union after the pump before the valve or should I add a threaded slip union at the pump inlet like my pool pump has (circled in red).
I don't care which is easier, I want it done the proper (best) way.

 

[proavia]

That 2-way diverter valve will work.

Might be better to use high temp pump unions....

Amazon.com

 

[jonnyd91]

That 2-way diverter valve will work.

Might be better to use high temp pump unions....

Amazon.com

Given the ones in the link would you also recommend putting the union at the pump inlet instead of inline on the actual pipe?

 

[proavia]

Yes - pump union at pump. Really no need for the inline union then.

It's best to have a pump union on both pump ports.

 

[jonnyd91]

Yes - pump union at pump. Really no need for the inline union then.

It's best to have a pump union on both pump ports.

Speaking of that is there really any point to having the valve on the return side of the spa pump? The jets get blocked with rubber inserts in the winter so I’m not getting the point of that valve?