Question about Kohler Coralais Black Single-Control Pullout Spray Kitchen Sink Faucet

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Low flow from Kohler K15160 spray kitchen sink faucet. If I take off the spray handle I can fill a jug through the hose alone (including the filter screen) in 15 seconds while with handle on the same volume takes 55 seconds. The reverse flow prevention flap seems to be functional.

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Are you sure the spray handle is allowing the valve to open enough to allow enough water through? The problem it seems like is physical or mechanical. I am assuming you get good water flow through the faucet itself.

Posted on Mar 04, 2009

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On the front of the faucet handle, there is a small plastic cover with an emblem on it. Gently pry it off with a sharp knife blade. Next you will notice a small "allen" screw head. Remove it by turning it counter clockwise until it's loose. (lefty loosie - righty tighty) Lift the handle straight up to remove.

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No hot water pressure in kitchen, low cold pressure


sounds like a bad faucet//only if you had good pressure before it was installed..to cheaply test..take the hot water off from the shutoff valve and spray it into a milk jug to see if theres good flow..then replace the faucet assmbly..dont forget to turn off the shutoff valve first..or you will get a watery surprise!

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The line connecting to the sprayer hose was bent during installation. Can this cause low water pressure? Can it be fixed without replacing?


Kathryn, the kink could restrict flow of water because there is so much less room. To remove the kink you could try pressing the two sides of the kink BUT that is risky. Have a replacement ready in case you damage it further. DO ALL THIS WITH WATER SHUT OFF. If you manage to straighten the kink even a bit more, water will flow better.GL

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1 Answer

Where can I get a new valve cartridge for our Kohler Coralais R15160-CP faucet? It keeps flowing more slowly and I have cleaned all the filters in the pull out head, etc. The dishwasher on the same line...


Most cartridge's are specific to their faucet and need to be ordered from the manufacturer. Home Depot or another place like that, that carries Kohler plumbing supplies should be able to get one for you and may even have one in stock. Good luck.

Oct 17, 2013 | Kohler K-15160-7 Coralais single-control...

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Yes, contact Kohler and they have a site you can watch that should be helpful.

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te leak most likely is the cartridge you need to take the handle off and there will be a lock nut under where the handle was, turn the water supply off and remove the nut the cartridge will pull staight out, cartridges can't be repaired they need to be replaced. Watch out because some cartridges cost more than what the tap is worth

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You will need to replace the cartridge in the faucet

Jun 25, 2010 | Kohler Home

1 Answer

I have poor water pressure from the faucet, hot and cold, in a single handle faucet


could be a number of things.
most mixer taps have flexible braided inlet hose's make shure there not kinked.
also there may be built pressure reducing valves,usually removerable,a plumbers job really.
is there servive valves on hot and cold if so make shure there fully on.good luck ,any qs ask

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1 Answer

I have a brand new Europlus faucet with hardly any water flow. I had the first Euro faucet with good flow. Why is the water flow so low on a brand new faucet.


when you installed did any teflon tape or debris get inside? you can remove and reverse flush with hose and it may clear the blockage

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