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Have a Kohler shower control valve, Coralais ? K15102-7 type. Bought what was reccomended by local plumbing shop. Original was leaking up to a quart of water per 2 hours. Put in new, still leaking, but not as much. This thing does not seem that complicated, but how do I stop the leak? I greased all the O rings. There doesn't seem to be much room for skewing the alignment... Any tips or tricks would be appreciated.

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  • Kohler Master
  • 34,148 Answers

The replacement valve could be defective.

Posted on Jul 14, 2017

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 68 Answers

SOURCE: no water coming out of my Kohler Forte R10275-4-BN shower valve

This is a pressure balancing valve that needs both cold and hot water pressure to operated. It is an anti-scald safety operation.

Good Luck, Phil

Posted on Dec 26, 2008

jj505
  • 195 Answers

SOURCE: kohler bath/shower diverter stem stuck on shower

Probably has water deposit minerals build up on it. Push and or pull with pliers until freely moves,soak in Lime away solvent ,toothbrush on.

Posted on Mar 16, 2009

  • 21 Answers

SOURCE: leaking outdoor hose bib

ok this is an easy one.  you have what is called a  frost free hose bib.  this is split or has a hole in it after the seat.  the seat is inside the house wall.  you need to cut off the copper inside the house and replace the valve .  if it is not a solder joint than have someone hold back on the copper on the inside and you should be able to spin it off and replace it.  P.S if this is the case make sure you use T-tape on the threaded conection

Posted on Jun 21, 2009

  • 297 Answers

SOURCE: kohler shower diverter leaks (behind the wall)

if you have a closet behind the shower or a wall you may be able to get to the diverter without damage to the tile ,are you sure you can't just change the cartridge? most times this is all that is needed to fix a problem like yours.

Posted on Jul 24, 2009

  • 3600 Answers

SOURCE: Kohler Fairfax shower faucet repair

You will need to buy the o-rings to fix it. You can buy at most hardware stores if you know how to turn off the water you can fix this with more instructions. Let me know if you need more help.

Posted on Sep 27, 2009

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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...

1 Answer

Kohler Coralais


Check under the sink to be sure the weight on the hose isn't resting on something, preventing it from retracting fully into the base. Also check to see if the weight might be in the wrong spot on the hose and not pulling the faucet back into the base properly.

Aug 30, 2012 | Kohler K-15160-7 Coralais single-control...

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Had a leaky Moen Posi-Temp shower faucet. Installed an Ace Hardware replacement cartridge. Fixed the leak, but now have a water hammer noise in the vicinity of the shower. Is this a common problem with...


I'm not aware of any problems with non moen replacement parts being the cause for a water hammer problem. Start with the simplest and cheapest correction which is using a moen replacement cartridge. If the water hammer persists then you may have to install a water hammer arrester in the plumbing system. This is basically a shock absorber in the plumbing system to stop the effect of water hammer. An arrester will cost you around $10 to $15 at your local plumbing supply shop. If you are not comfortable soldering copper then you will want to hire a licensed plumber to complete the work for you.

I had the same type of problem with an older toilet in my house. It developed a water hammer when it shut off after filling the tank. I replaced the fill valve with a generic universal replacement for about $10 and it stopped. Again sometimes the simplest fix will work. Let me know how it works out.

Jul 19, 2010 | Moen Posi-Temp Single HandleTub And Shower...

1 Answer

Kohler - Coralais Pull-Out Spray Kitchen Faucet


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

Jul 12, 2010 | Kohler K-15160-7 Coralais single-control...

1 Answer

Kohler Coralais K 15160 The body has a machined hole in the back, about the diameter of a toothpick. It has begun to leak water when the faucet is turned on, however this occurs once in awhile.


The front of the handle has a plastic button which can be removed with your thumb nail or tooth pick. Once the button is removed use a 1/8 allen wrench to remove the handle. Remove the decretive sleeve to access the top of the valve. Tighten the valve stem nut and reassemble. It the problem persists you may need a new valve or rubber seal. The best thing about Kohler is they offer a lifetime no leak warranty. I personally will buy Kohler faucets and toilets because of the quality and warranty. Delta has some hi end products but the support and warranty policies will make you never want to service a Delta product again. So if the faucet still leaks just call 1-800-456-4537, and they will send you a new faucet or parts.

Jun 24, 2010 | Kohler K-15160-7 Coralais single-control...

1 Answer

Very little cold water from shower valve


If this is a new installation and has always beenj this way, then I would suspect that there may be an obstruction in the cold water line leading to the valve. Or something stuck in the valve at the point where the cold water is connected. If someone has worked on thius valve recently , then I would suspect that they got the valve cartridge in backwards, If the catridge is not placed in the valve correctly the opperation is messed up.

May 06, 2010 | Kohler K-T10335-4-CP Lyntier Rite-temp...

1 Answer

Leaking kohler faucet


Where the spout pivots on the main body, there are a couple of washers, you can replace these washers pretty easily by removing the handle and then the "cover" from the unit. The water has to be shut off before you do this. I would take this oppurtunity to replace all the washers.

Mar 08, 2009 | Kohler K-15176-PT-7 Coralais...

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