Thank you for your question. The shower head included with this unit is currently designed to provide a flow rate of 2.0 GPM at 80 PSI. You can measure the flow rate by running the water into a bucket for one minute and then measuring the amount of water. If it is running at the correct flow rate, you could install a Volume Control such as the U4760-PK. This will allow you to reduce the flow to the desired level.
Best regards, Jon
Date published: 2018-10-18