I have a price pfister 3 handle shower (circa mid 70s) that when set to shower also lets water out of the tub spout. . When set to tub only, flow is completely blocked to shower head. I have replaced the seat washer and the valve seat with no improvement. There are no other replacement parts on this valve. I applied air pressure from the shower nozzle down to the diverter to test if the diverter was sealing and i could hear no bypassing air through the valve. When pulling the valve back out i can physically see where the washer has compressed against the seat.
Any idea why i cant get the divertor to block flow to the tub?
Best Answer
You (almost certainly) need to replace the "diverter washer". In the picture below you can see it on the middle valve assembly (the diverter valve), it's a white plastic disc that sits between the backside of the valve stem bib area and the valve body: