Seat removal

[Rgbujoy]

I have two different type o seat in my shower faucet. Can someone explain to me why? One is round. One is hex. The center one is hex. Hot and cold is round.

 

[SHR]

Your seats are not replaceable. Use a re-seating tool to grind off any imperfections on the seats and replace the stems. Very common situation in laundry tub faucets, not common in other faucets.

 

[Mr_David]

Picture of the stem you took out.
I'll bet it's a Price Pfister ceramic disc type. the hot and cold stems do not have seat. They have a seal on the end of the stem assembly.
The diverter has a seat because that is the standard type stem.

 

[Rgbujoy]

Your seats are not replaceable. Use a re-seating tool to grind off any imperfections on the seats and replace the cartridges. Very common situation in laundry tub faucets, not common in other faucets.

Thanks for your help.