Kitchen faucet has very little flow. however my sprayer works fine.

If there is a way to remove the end of the sprayer, take it off and inspect for a loose piece of debris. They have a small port where the water flows and it may be clogged.

to reduce the 'thumping' noise, open the supply valves more. If they are already at maximum, you may have a restriction further up the supply lines. Thumping is typically caused by unbalanced flow around the seat and washer, usually caused by restrictions.

Check to be sure the hose isn't kinked somewhere below the faucet. If there aren't any kinks there is likely debris stuck behind the nozle screen, remove it and clean it- or your handle mechanism is broken. Replacement handles and hoses are fairly inexpensive if you need one they're easy to find at most big hardware stores or on Amazon

The specs say that there are two check valves but the diagram does not show them. Take the weight off the hose and see if it is causing the restriction. If it is not, what is the water pressure in the house? The 2.2 GPM is the maximum flow rate.

I had the same issue with an American Standard faucet that I installed new 6 months ago. The diverter can be the issue if you have a sprayer attachment. Try unscrewing the sprayer head from the hose it's attached to. Now run the water full pressure with the hose pointed into the sink, obviously :~). After running the water for about 1 minute, connect the sprayer head back onto the hose, make certain the flat rubber washer and ring gaskets are seated in their grooves properly, and tighten until you have no water leaking from the sprayer head/hose connection. Now try the water through the faucet. If the problem was a temporary diverter issue, your pressure should be fine now. Good luck

The Diverters Parts is C7005. Here's the parts breakdown for your Rohl faucet. Contact Rohl and have them send you new diveter for free, the A3608 seriers came with a limited liftime warranty.

probably hard water build up.I used a tooth pick inserted into each little hole to dislodge the build up

try tightening the nut that attaches the flex line to the pull out spout

I would turn off the water then check to make sure you have good flow up to the faucet itself. If you do then there might be a proplem with the cartridge or diverter. does it have a sprayer? If it has a sprayer head for the spout of the faucet then there will be what the call a check valve inside the spray head itself that canbe removed with a skinny screwdriver or something thin and long

If you have a Delta faucet your diverter may need to be replaced. The diveter is located under the spout (see diagram)(this is not your faucet but works the same)



Here are the instructions:

1. Turn off water to faucet.
2. Remove handle.
3. Remove top cap.
4. Turning spout back and forth gently lift and remove.
5. Remove and replace diverter.

Hope this helps and please remember to rate this!