Hello Chops,
The Venturi Bath faucet flows at a maximum rate of 1.2 gallons per minute at 60 PSI. This should create a ribbon of water flowing from the faucet spout. If the faucet is experiencing low water pressure, we have provided a link below to the maintenance for this model that shows how to remove and clean the inlet adapters to remove any debris or particles that may have got caught up in the screens. Please refer to the 3rd page and step “Adaptor Cleaning.” If this doesn’t restore the flow, the cartridge will need to be replaced. Please call our Support Team at 1-800-732-8238 to get your new cartridge and get this resolved right away.
Maintenance Guide:
https://pfisterstorage.blob.core.windows.net/documents/47362-0900%20web.pdf
Thank you,
Pfister