Help with changing Price Phister knob to Moen lever tub handle

I'm trying to change my bath tub handle from a Moen knob to a Moen lever but have a problem. The posi-temp adapter that came with the lever kit does not fit onto the cartridge. I'm used to a brass or metal piece that the adapter screws into but the one that is currently attached is plastic and a different shape than I've seen before. See pictures. The bottom 2 pics are the posi-temp adapters that came with the new lever handle. Any suggestions on how to do this? Thanks!

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I believe you have a Price Phister cartridge there.

It's not a Moen cartridge in the wall.


Price Phister Avante valve

You need something that fits your PP Avante valve.



Moen Posi-Temp

Thanks for the reply. Can I change out just the cartridge or do I have to change the entire Avante valve to the Moen Posi-Temp to make it work? Sound like it might be easier to just get a Price Phister knob.

qutoe; Sound like it might be easier to just get a Price Phister knob.

That is the ONLY way you are going to do it without changing the entire valve inside the wall. And, it would be the same no matter which brand you chose if it was NOT Pfister.