Why does your shower temperature change when someone flushes the toilet or uses another sink in your home?
Your water pressure is low. Consequently, when cold water is diverted to another application such as a toilet or a sink, the amount of cold water available at the shower mixing valve decreases as the low pressure is unable to keep up with the shower's demand. This causes a hotter mixture at the shower head. The solution is to either improve the cold water supply to the shower or to replace the shower control valve with a temperature compensating type. Pressure balancing is the cheapest and simply changes the shower temperature according to the pressure in the cold and hot water lines. When the toilet or sink is used, reduced pressure to the shower valve is detected and the valve reduces the hot water pressure, thereby maintaining the temperature. The more sophisticated approach is a thermostatic shower control valve. These are significantly more expensive, but will not reduce the pressure at the shower head (a drawback of the pressure balancing valve). The thermostatic valve would be required when one shower control valve is operating several shower heads. Moen, Kohler and Delta all make both types of control valves. They can be readily obtained from a local plumbing supply house.
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Why would the water temperature of the shower change to very hot from lukewarm even when no other taps or toilets are being used in the apartment?
If you have an old complex built pre 80's, you may not have pressure balance shower valves. Replace existing valve with a new pressure balance valve. The problem is most notab…le in second and above floors, but can occur at the ground level as well. Setting at the water heater has been chaged. This most probably due to the thermostat being faulty. It can no longer regulate the tempreature which causes the heat of the water to spike.
Answer . Drain is partially clogged or the vent pipe is stopped up. Also check the vent holes underneath the rim of the toilet and clean them out..
Based on the limited data in the question:- If the toilet flush is working in that it cascades water in to thepan then the flush IS working. If the water in the pan is notflu…shing away and the bowl fills with water and is slow to emptyleaving waste in the bowl then you have a blockage behind the "S"Bend and in to the stench pipe that carries the grey water from theshower and sink away. Common Causes; Sanitaryware caught in the bend and waste pipe. Toilet cleans which have plastic or metal fixing to the bowl brokenfree and flushed (caught) Toilet wipes etc caught on a breaking pipe join Card from a toilet roll flushed and jammed All of the above. It might require the bowl to be removed checked. - You can byproprietary toilet unblocker liquid. However, tis can be dangerousin the hands of someone not conversant with the effects You might need a plumber with a jetting system to break up thewaste. If the flush is NOT working in that it does not cascade water in tothe pan then there are a number of causes; Handle from the flush to the siphon is broken or unhooked from thesiphon Lift rod to the siphon has snapped Diaphragm inside the siphon has spilt causing loss of water lift Ballcock is jammed and not filling the flush/Inlet value on theballcock is jammed stopping the water fill. Corrective options; Take the lid off the flush and check its filling, If not check thatballcok is not jammed, check the valve is allowing water through -if this area is the issue replace the upstand and ballcock Handle has snapped from the uplifter on the siphon - - replace thehandle of connecting hook Uplifter rod broken/ water not being lifted (damaged diaphragm) -replace siphon
Bad vent or particle stoppage
\nIncrease your main line pipe size. When you have a small pipe installed, and while you showering the toilet is flushed it has to distribute the amount of water running in th…e pipes, resulting in the drop in pressure. Once you have increased the pipe size, you'll notice that the extra volume of water will accommodate for the extra water needed to fill the cystern while showering, therefore fixing the problem with a drop in pressure.
You can change the seals on your shower to ensure that you don'thave a leak. You can also make sure that your fixtures are firmlyattached to the shower head.
This is not an uusual as when the toilet is flushed more cold water is drawn usually from the cold water pipe that suplies the shower with cold water so generaly the water und…er the shower gets hotter. The only way to stop this from happening is to lay an extra pipe all the way to the ater suply point, or fit a pump to maintain the presure
Check the vent pipe
The drains for the shower, toilet and sink all connect to a common line. Assuming the toilet is not backing up, the problem indicates that there may be a partial blockage, eno…ugh so that some of the toilet flow is backing up through the shower drain line. You need plumbing repair. The shower leak you mention should only be in the shower, or else you have a broken drain line as well.
How do you keep shower temperature from changing when someone flushes the toilet or uses another sink?
Temperature / balence shower body
Depends on the make of flush valve. Some have a screw under the cap that you turn clockwise to increase, counter-clockwise to decrease the pressure. Best thing to do is change… the diaphragm and go from there.
Of course as water seeks its own level thus the toilet is NOT effected by a fixture above it
When you take a shower, you're mixing a combination of hot and cold water to make a comfortable temperature for the shower water. A toilet draws only off the cold water system…. In older or poorly designed plumbing systems, when you flush the toilet, the cold water is pulled by toilet, so the water coming through the shower is only drawing from the hot water tank.
Imagine a hose pipe in the garden. When the water is on and there is nothing attached to the working end, the water comes out in a steady pour. Now, if you put your thumb over… the end suddenly the water starts to squirt out under pressure from beneath your thumb. This is because as you constrain the flow the mains pressure behind the water mounts up to its maximum value while with the unobstructed hose there is no pressure because the water is moving out of the pipe at an equilibrium rate. Now, if you think of the shower, it constrains the flow of the water, rather like your thumb over the hose end and when someone flushes the toilet this creates another opening in the pipe coming to your house and the pressure goes away like the unconstrained hose end. To avoid this problem many people supply their shower from a header tank in the roof which is filled from the mains separately and provides a constant dedicated supply to the hot water system and the cold side of the shower so that the pressures in each balance.
It means that you should sell your home and move far away! No jk If its your faucet that is dripping I think in time your faucet needs repaired or replaced because if it drips… only when you run water at another fixture (faucet) and doesn't drip if you have everything off then you have a strange faucet but its most likely caused by water hammer (sudden stop of water flow) and if you don't think its cause by that then it also could be from water pressure which when you turn on another faucet and the pressure drops a little and from the drop of pressure and it vibrates your seal in your faucet which could make it drip but very rare but possible.
Clogged drain line downstream of basement sink or possibly problem with venting.