Why I like Thermostatically controlled Shower Valves

Discussion in 'Tutorials' started by jadnashua, Jan 5, 2016.

  1. Andy

    Andy New Member

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    Lawn Care
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    Portland, OR
    This is interesting. I didn't even know thermostatically controlled valves existed.
     
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Joined:
    Sep 2, 2004
    Occupation:
    Retired Systems engineer for defense industry.
    Location:
    New England
    Look at the differences between a thermostatically controlled valve and all others:
    - a thermostatically controlled valve is controlling the outlet temperature, regardless of the pressure changes or inlet water temperatures of both the hot and cold both momentary and long-term (as when the season changes or the WH starts to cool off)
    - all others, you manually adjust the proportion of hot/cold...a pressure balanced valve will try to retain that balance, but has no real effect if the inlet temperatures change, only a pressure change.

    So, essentially constant outlet temperature through pressure and supply changes with a thermostatically controlled valve, or a relatively constant proportion of the hot/cold supplies mix.

    My vote is the thermostatically controlled valve.
     
  3. Keith Frank

    Keith Frank New Member

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    Phoenix, Arizona
    Thanks for sharing, this is good stuff
     
  4. DIYorBust

    DIYorBust Active Member

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    Mar 5, 2019
    Location:
    Long Island, New York
    I picked up two delta tempassure valves, with rough trim and cartridge, for about 200 each. Thought that was pretty good for a thermostatic. Any other good options that don't cost an arm and a leg?

    I also noticed a nice byproduct from this upgrade. The shower is far from the water heater, so normally there is a period of waiting for the hot water temperature to stabilize. With the thermostatic, you can just hope in as soon as the water is comfortable, and it will ramp up to the desired temperature without further adjustment. Saves some time and wasted hot water every day, it wouldn't surprise me if this one mostly pays for itself before the next renovation. I suppose that depends on how long the cartridges last, but I'm hopeful it will be at least 10 years.
     
  5. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

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    Occupation:
    Retired Systems engineer for defense industry.
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    New England
    I have a Grohe thermostatically controlled valve. THe volume control started to leak after 15-years and was easily replaced. The thermostatic cartridge is still going fine. 10-years should be an easy goal to reach.
     
  6. FDNY/RETIRED

    FDNY/RETIRED Member

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    Retired Lt FDNY/EMS
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    NY

    Interesting you bring this up small world. I have been retired since 911. But my partner who just retired was on that job was Hunts Point don't even have to look at the link. He told me about it and still does. I am telling you that you have no idea how it affected him. I can't tell you how many 911 calls I have been to for burns to children from scalding. I can also tell you how the parent is tried to be blamed for child abuse. Yet IMHO when being in the apt. Be it a family in a shelter, city housing or even private house. Looking around how things were around the house. Showing how caring and devoted these parents or care givers were to these kids. There is no way these people deliberately burnt their children. Some were stupid leaving their kids in a bath tub for just a couple of seconds. To go deal with something in another room. But thats all it takes In most of the calls I was on it was the exception to the rule. I spent 2 yrs Downtown Manhattan and Midtown and 10 yrs in Harlem. Then the Bronx and finally Rockaway. You knew when an adult or a caregiver was responsible for doing something on purpose to their child. I was a Medic in Chicago in some of the worst areas of South and West Chicago. The Cabrini Projects, and the same was true there. Still it always seemed the city or landlord tried to pin it on child abuse.

    I am no plumber a handy guy yea. I came to this site for advice on something to do with my new Navien combi boiler. Just started looking at different posts. But I started life out has an auto mechanic in Rockaway. Became an automotive design engineer/mechanical engineer. Then took a 180 turn and went into the Emergency services profession. I remember every child abuse case, shooting, stabbing and burn case I have been on over 23 yrs. I went to many of those children's funerals. The memories this post has just brought up.
     
  7. blue_bleeder

    blue_bleeder New Member

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    Mar 14, 2017
    Location:
    Colorado
    Arguments about gov't regulations and victimhood aside, there is a reason that technology advances and gives us opportunity to have advanced valves like thermostatic cartridges. That being said, just like every other plumbing part, they eventually fail. We see that after about 15 years. There are two types of thermostatic cartridge controls (that I know of): wax element and bi-metal. The wax element ones are the most common and that part makes up such a tiny part of the multi-piece cartridge. (pic below).

    upload_2020-12-24_10-51-32.png

    We have come a long way from replacing bibb washers and seats to throwing out a cartridge that costs hundreds of dollars. Just an observation.
     
  8. Sylvan

    Sylvan Still learning

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    Sep 23, 2004
    Occupation:
    plumbing - fire suppression - boiler inspector
    Location:
    New York
    Ironic Hunts point and children murdered OPPS I mean scalded ... I work for over 37 law firm as an expert witness and the worst case I have been called to investigate was this one at Hunts points


    I even spoke to the lieutenant at the property clerks warehouse in Brooklyn and the SGT neither one could give a damn

    I told them this radiator DID NOT EXPLODE and if you read " Two tottled die in Hunts point explosion" each FAKE newscasters spews even bigger lies and what they don't know they make up

    One moron stated "High-pressure steam" the code states any steam pressure 15 PSI or above is considered high pressure, most apartment building operate below 3 pounds

    I do have a lot of legitimate scalding cases where nonlicensed stumblebums or a handyman or building Superintendant installed a shower body without scald protection or the low flow shower head caused the water to become extremely hot when another fixture was used


    Over 80% of my cases are scalding of children of course the low life single parent is never held accountable or the fact there are crack viles all over the apartment

    https://www.nydailynews.com/new-york/bronx/bronx-radiator-explosion-kills-toddlers-article-1.2901985


    And


    https://www.ny1.com/nyc/all-borough...arents-suing-nyc-for-radiator-explosion-bronx

    And

    https://abc7ny.com/children-burned-apartment-in-hunts-point-the-bronx/1645983/

    Notice NOT A single government agency drug tested the father, Also how could he not hear the screams? How did he have a video game on when he was homeless a few days before EACH fake news carrier spews a different story IMHO
     
  9. DIYorBust

    DIYorBust Active Member

    Joined:
    Mar 5, 2019
    Location:
    Long Island, New York
    It would be great if a company would make cheaper cartridges. I bought I generic thermostatic valve, probably from china, on the internet an few years ago, and hooked it up to some hoses to make a temporary yard shower. It close 10 bucks I think and worked fine.
     

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