Shutoffs on Price Pfister 0X8 shower valve

[jmulla]

I can't get the water to shut off by turning the integrated H/C shutoffs on the Pr Pf 974-0420 0X8 valve. I turned both screws vertical as well as horizontal and it didn't stop the flow one bit.

This is in a high rise apartment bldg and we are on the top (7th) floor. But why should that matter? Valve is probably 25 -30 years old.

Any ideas?

Just trying to change the cartridge.

Thanks.

 

[Matt30]

Shut offs that haven't been exercised in 25 years likely will never seat properly to stop flow. The rubbers are long since deteriorated.

 

[jmulla]

Thanks, Matt30:

I thought those shutoffs were ball valves. In replaced a diverter in another shower faucet (Rohl RMV-2) and its integrated shutoff valves only required a quarter turn to shut off the water.