It appears that there is a flow restrictor in the spray head at the point where it attaches to the hose. I experienced unacceptably low water flow immediately after installing this faucet, so I took another look and discovered the flow restrictor. I removed the O-Ring and the little plastic part with holes in it…then reinstalled the spray head. My water flow is now just right. I went from about .9 gallons per minute to about 1.33 gpms after removing these parts.