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I have a single knob shower, Valley brand. Almost the entire range of the turn from off to completely hot, it is just cold water. Only in the last half inch of the turn does any hot water start mixing in.

Unfortunately, this leaves little room for adjustment. Is there any way to change the mix so hot water is introduced sooner?

This is the mixer in question:

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1 Answer

This depends on the shower valve you have.

On some there is nothing you can do short of replacing it. On others there are pressure balancing settings that you can change and these should be adjustable once you take off of the trim. Most of the time they are right in front and you will see notches.

For American Standard valve they call it the "hot limit stop". The picture I have below shows how to change it. You will need some pliers (to turn on the shower without the trim on it) and a screw driver (to take off trim and adjust setting).

This is kind of hit and miss with most valves - you really just have to change it and see if it is what you want. I have mine on the hottest setting and the range is kind of warm to pretty hot. Can't take a really cold shower in one of my bathrooms!

Warning: If you have children using the shower then I would really test the settings for scalding water. Most newer ones that I have installed don't allow all hot to got through but who knows. Test it out.

Also if you look like you could or might break something when you are adjusting the valve, I would leave it alone until you can figure out what your replacement options are. You might want to figure out what model it is so you can look up instructions and then to have that model # to replace if needed. Changing this is a very easy process for new valves but the much older ones can have issues.

enter image description here

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I don't think the question is how to get hot water faster, but how to get hot water sooner when turning the dial. So its not a question of time, but a question of when hot water begins to noticeably mix in with the cold. –  Josh Aug 29 '13 at 15:58
    
@Josh - both would have same answer. –  DMoore Aug 29 '13 at 16:01
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From my reading, the OP doesn't have an issue with hot water in the pipes; it is that the valve switches from fully cold to fully hot in a 10° (angle) turn of the valve, whereas the OP wants to know how to adjust things to allow something closer to the full 120° range of the valve. So this has nothing to do with cooling of the pipes, it is about the ability to adjust to a desired temperature. –  gregmac Aug 29 '13 at 17:07
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Sorry read that wrong and edited. –  DMoore Aug 29 '13 at 17:26
    
@DMoore Josh is correct, it's not about the delivery of hot water, but the point on the dial where they start mixing. Thanks for fixing! –  tghw Aug 29 '13 at 18:45
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