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Dornbracht mixing valve

Hot & cold plumbed in reverse

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Yes it probably is! Now what is the question?

Posted on Nov 26, 2013

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6ya6ya
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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

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SOURCE: Shaking of the valve D500058BNT Parma Shower, not the pipes

The issue you have is known as water hammer per se. It is the result of water logged air chambers in instances such as yours. The easiest solution is to turn off the water supply to the house and drain the entire system from the lowest point available such as a hose bibb/water spigot. Turn off your electric water heater if applicable as lack of water will burn out the elements. Once this is done turn the water supply back on to the house and bleed the excess air out of each appliance by turning it on and running both hot and cold water until air dissipates. Another cause may be an inadequately secured plumbing system behind the shower itself. The piping should be secured to some cross member to prevent movement caused by water pressure. A special device is made in extreme circumstances and larger systems called a water hammer arrester which does the same job as an air chamber but uses different principles to accomplish the task. I hope this is of assistance to you and thanks for using Fix Ya. If I can be of further assistance please let me know.



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Posted on Oct 21, 2008

motor1258
  • 6674 Answers

SOURCE: waters hot instead of cold when you turn it on

You have to remove cartridge and rotate 180 degrees then re-install. Was it removed or replace lately?

Posted on Jan 06, 2010

Testimonial: " Thank you...The plumber put it in wrong.."

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SOURCE: I bought a Danco 3H-10H/C, Hot/Cold stem. The

One of two things has happened. I'm assuming you only get hot water when you open the valve and that this is for a single handle control shower fixture. If so either this is the wrong valve for your shower control or it is installed backwards. Sometimes the valve can be installed at either 180 degree angles. See if it can be installed any other way. If so this may solve the problem.

Posted on Jul 19, 2010

Magaiver
  • 707 Answers

SOURCE: Valve will not mix enough hot water with

Their is a mixer valve if it is a one handle unit which is built in. It may be one half turn out of timing.

Posted on Aug 10, 2010

  • 1015 Answers

SOURCE: which side is the hot and cold pipes plumbed into

They can be piped either way on older valves but they should be piped with cold on the right and hot on the left.
On the newer tub and shower valves that are scald guard or posi temp valves they must be piped properly or they will not work right. Hope this helps you. Thanks and happy holidaysFrodo 959

Posted on Dec 24, 2010

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My maytag washer model lat8006aae hot water flows in slow. I reversed water supply lines, no change, replaced water strainers and new water lines, still slow flow. supply lines, inlet water valve


It is possible the hot cold switch is flawed and stuck on mix of hot and cold I would have the inlet valve checked with a multi meter they can also check it for u at most appliance parts stores

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Hansgrohe iBox reversed hot & cold how to repair


Swap the hoses at the shutoff valves on the wall

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How would you minimise the riskto the elderly or infants when replacing an exsiting hand basin?


If you are referring to limiting the temperature of the hot water to prevent scalding, then a tempering or mixing valve can be plumbed in between the cold and hot water lines. This type of valve adds cold water to the hot water and it is adjustable.

Mar 18, 2013 | Mountain Plumbing Plumbing

1 Answer

I installed a dhc tankless heater, but when I open only the hot water everything is ok, but when I open the cold water at the same time the heater turns off.


Hi and welcome to FixYa, I am Kelly.

What is happening is that your cold water flow is greater in volume (gals per min) than your hot water. So when you open the cold water it is mixing with the hot water inside the faucett or shower plumbing and actually reverse flowing back into the hot water heater plumbing. The reverse flow slows the water flow sensing turbine inside the heater and it is thinking that there is not any water flow. (There isn't actually due to the equalization of water pressure when you open the cold water faucett) Since this is a safety feature of the tankless heater to keep it from overheating, it shuts off.
Somewhere in the hot water plumbing there is a major restriction. It may very well be the internal plumbing of the tankless hot water heater or the flow detector design.

There are 2 ways to correct this. The easy way would be to restrict the available cold water flow. You can do this by installing another shut off valve inline with the cold water plumbing and just not open the valve all the way. You would have to adjust the setting so that the hot and cold water can be on at the same time and the hot water heater stays on. The hard way is to locate the hot water flow restriction and eliminate it.
It is possible.... if you have a flow restrictor in a shower head or a screen in a faucett areator that they are partially clogged. Clean any flow restrictors and screens then see how the hot water heater performs before you start modifying plumbing.

Thanks for choosing FixYa,
Kelly

Apr 10, 2011 | Stiebel Eltron DHC-E 8 Tankless Electric...

1 Answer

The hot and cold are reversed on our single handle shower (no tub faucet -- shower only)


Hot on left.
Cold on right.
Some single handle faucets have bleed-over where both hot and cold enter mixing valve each time handle is turned on, even when faucet calls for just cold or just hot.
Otherwise maybe a do-it-yourself plumber got pipes backwards... or maybe the tub used to be on other side of wall, and tub was moved during remodeling but pipes were not changed.

To fix problem:
First of all, turn off shower faucet. Turn on Hot at sink and put ear against shower faucet listening for sound of water flowing through the mixing valve.
If mixing valve is working fine, you need to open wall and investigate more.
For example if you have access door, reach in and feel which pipe is hot.
Pipes might need to be reversed if problem comes up in home inspection, otherwise the problem will not harm anything.

Feb 19, 2011 | Price Pfister Plumbing

1 Answer

SINGLE VALVE SHOWER FAUCET TURN ON TO GET HOT WATER ONLY GETTING WARM WATER LUKE THE OTHER TUB AND SINK FAUCET COME OUT HOT HELP PLEASE


I can think of a few possibilities. 1) Something is blocking the hot water in to the mixing valve. Fixing this would probably mean cutting out the valve (then redoing the water lines with a new valve (possible option)).

2) The hot water line is losing too much heat going to this second faucet. (If the two tubs are on different floors this is more common. Many places are plumbed with one line with Ts to all fixtures.) Insulating the water lines might help; alternatively an point of use water heater would help.

3) The hot water and the cold water in are reversed. (Test by leaving the water on full cold and full hot for a few minutes each.) If you get full hot when it should be cold, valves with a cartridge are easy to fix. Open the valve assembly, remove the cartridge and reinsert it after turning it around (side closest to you when you removed it goes in first). Otherwise, the incoming plumbing needs to be redone at the point where the cold and hot lines come into the shower.

I hope this helps.

Cindy Wells

Dec 15, 2010 | Price Pfister Home

1 Answer

Rinnai Infinity 26 hot water system set to 55 degrees with remote temp adjuster. Water only luke warm for showers. Burnner working, water & gas pressure ok. Any thoughts ... Stephen


If you aren't getting any error codes, then the heater is probably doing its job. Your problem is probably somewhere in your plumbing system. The most common reason you get this sort of problem is due to cold water mixing in the hot water system. There are a number of causes for a "cross connection" :

-Faulty check valve
-Missing check valve on reciculation return line
-Faulty shower cartridge
-Thermostatic mixing valve set too low
-Faulty thermostatic mixing valve
-Faulty anti-scald valve

The easiest way to confirm a cross connection is to: 1) shutoff the cold water entering the tankless heater 2) open hot water valves around the house. If you still have water flowing at your hot water fixtures, then you have a cross connection.

Jul 09, 2010 | Rinnai Digital Remote Water Heater Control...

1 Answer

Hot water coming out of cold water faucet


The hot/cold water mixing valve is already defective, it
needs to be replaced to get the right result.

Nov 19, 2009 | Plumbing

1 Answer

Delta single handle faucet. Hot or cold no in between.


well they should be same size but unless you getting more of one then other then sound like mixing valve is not mixing. do have 3/4 hook up to mixing valve? you only need 1/2" to valve.

Jun 25, 2009 | Delta & Single Handle Shower Faucet

1 Answer

Mixer shower connected to combi boiler running hot and cold and also not much pressure


Mixing valves usually have a diaphragm inside that keeps the hot and cold separate. If the diaphragm is old it may be allowing the hot and cold to mix improperly at the back of the valve. This is similar to a cross connection (a hot water line tied into a cold line) in your plumbing. Cross connections interfere with the performance of Combination Boilers and Tankless Water heaters due to their having no water storage or a very small buffer tank. The brand of the valve will help as each one is different in their mechanical design. If this is the problem you or a licensed plumber can replace the cartridge in the valve. Refer to your valve's owner's manual for part numbers.

Mar 17, 2009 | Home

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