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shower valve
A pressure-balanced valve provides water at nearly constant temperature to a shower or bathtub, despite pressure fluctuations in either the hot or cold supply lines.
If, for example, someone flushes a toilet while the shower is in use, the fixture suddenly draws a significant amount of cold water from the common supply line, causing a pressure drop. In the absence of a compensating mechanism, the relatively higher pressure in the hot water supply line will cause the shower temperature to rise just as suddenly, possibly reaching an uncomfortable or even dangerous level. Conversely, if someone opens a hot water faucet elsewhere, the relatively higher pressure in the cold water supply line will cause the shower temperature to drop suddenly. This is described in US patent 3674048.The pressure-balanced shower valve compensates for changes in water pressure. It has a diaphragm or piston inside that reacts to relative changes in either hot or cold water pressure to maintain balanced pressure. As water pressure drops on one supply line, the valve reduces the pressure in the other supply line to match. A side effect of this is that the pressure and flow at the shower head or tub spigot will drop twice as much as if only one supply line had been affected, but without a large temperature change. There are ball bearings in the valves to regulate forces.
The use of pressure-balanced valves can prevent scalding injuries, in particular to the elderly, the infirm, to children and infants. Based on that, some municipalities require by building codes to have it installed.
Hi.
Could somebody recommend a Muslim shower valve that does not leak please?
Or one that has a washer that you can replace if it leaks?
Some sort of tap will be fine that you can connect the shower pipe to please, ideally in chrome?
Many thanks in advance
I am fitting a thermostatic shower control. The flow knob fitting has a threaded section - 27mm OD - and it would be helpful to get a nut to go on it. Can anyone advise what I need and where to get it please?
Hi Guy's,
Looking for some advice on an issue I have having with a recently installed thermostatic mixer shower in my ensuite. Everything was working fine for a coupe of months however now the valve has started misbehaving which is resulting in having to turn the temperature valve round further...
I have an Arteform shower valve in my bathroom - top lever for the main shower head, middle for the handheld hose and bottom is the thermostatic control. The hot was not getting hot enough recently so (under instructions from the manufacturer) I removed the allen key valves bottom left and right...
Hi all. My hot water feed for my shower is on the left and the cold is on the right. My understanding is that this is correct and this is also stated in the instruction manual for my valve.
However when I turn the mixer clockwise cold water is coming out the shower instead of hot water. When...
Hi all. My hot supply for my shower is on the left and my cold feed is on the right. My understanding is that this is correct and this is also stated in the user manu.al.
However when I turn my mixer clockwise the water is turning cold when it should be hot. When I turn it anticlockwise the...
Hi - recognise this a bit of an odd one. We have an old failed mixer valve which we need to replace. This valve actually predates a temperature controlled boiler, so the mixing functionality is irrelevant, since the cold water pipe is isolated/off.
I'd ideally like to replace the shower valve...
I am redoing my bathroom and not sure what the best way of doing my shower is which is in my bath, I want a rain shower and so I was thinking of using a thermostatic shower valve as I have removed the plasterboard to re tile (new build) and thought this is a good opportunity to do it, my...
Hi all
I've finished running the copper for my concealed shower valve and tested both inlets and the outlet with cold mains (full pressure).
I just wanted to ask is it considered necessary to test the hot inlet with hot water, or will the cold suffice?
Many thanks
P
Hi all
I'm in middle of my bathroom renovation and about to connect up the shower valve. Thus far I've run all copper but would you recommend I use soldered to 1/2 adapters in to the valve or compression fitting to 1/2?
Obviously I'd need to pre-solder the adapter before installing the 1/2...
Hi all,
This shower valve is about 20 years old. Can anyone with a bit more experience than me identify the brand/model? No markings visible. Distance between centre of valves: 70mm
Thanks in advance
We are in a new build (2 years) and the bar shower value on-off bit is jammed. I want to replace it myself as can't afford a plumber. The old one is is Aqualisa and has on/off on right and temperature on the left.
I have purchased a replacement bar shower valve with the on/off on left and...
Ok so, I supplied a shower valve, overhead shower and riser to a customer that was having it installed by a plumber. Hands up I made a mistake when I ordered the valve and supplied a single outlet instead of twin. If the plumber had called me at time of install I could have swapped it for him...
Hi,
I just bought an old house that was renovated in the 1980s. The bathroom shower has some kind of valve on the supply pipe - does anyone know what this is for? The whole bathroom will be going into a skip in a few months but I’m just curious as to what it’s for.
Thanks.
My shower temperature control knob isn't working anymore - only produces hot water. I tried replacing the cartridge but I can't seem to remove the existing one. What's the best way to remove the cartridge I've attached pictures of? It's very very stiff.
I have installed a new shower valve and shower head (the restrictor um fell out) and as a result the tub starts to fill with water. I believe this is simply a math problem of more water coming in than can drain but asking if any known options.
As a sanity check I did snake the drain and...
Help please can anyone tell me how to remove this older model Francis Pegler shower backplate, there are no signs of a grub screw
or a socket headed screw. It cant be rotated either because of the border tiles. Thanks
Hopefully a simple question for someone in the know, but why do some plumbers/installers run everything in plastic pushfit (Hep2O or JG) and then swap over to copper for the last bit before a shower etc? I see this being done on installations where there is a pushfit adaptor available for the...
Hi there, I wonder if someone can help - I'm replacing an exposed shower valve but the hot water is on the right and the cold water on the left, when you look from the front at the existing unit.
Looks like all valves are the wrong way round for purchasing a new unit, have I got this right, are...
Hi all,
Bit of a plumber novice that’s for sure, so apologies if my question is very basic or I haven’t made it too clear.
In essence, shower isn’t very warm, boiler and that is fine. Suggestion was thermostatic valve or mixer valve may need replacing. I have stripped the turners back along...
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