Thermostatic valve or pressure balance valve?
janesylvia
11 years ago
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enduring
11 years agolast modified: 9 years agoRelated Discussions
Pressure Balance or Thermostatic Valve?
Comments (5)zl700, we are having problems with our tankless water heater during the winter months. We will turn on the hot water in the shower (full hot), wait for it to heat up, and then dial in a comfortable temperature before stepping in. In the middle of the shower, the water heater will suddenly shut off, indicating an error code, and of course the water becomes ice cold. We have found that simultaneously running the hot water on a second faucet, for instance the bathroom sink, prevents this problem. We have PBV's in our showers and are looking to replace them with thermostatics in order to eliminate this problem, but it would be nice to find some published literature that confirms that this is likely to remedy the situation, especially given how invasive a valve replacement can be. Can you tell me where you learned about the possible problems with using PBV's with tankless water heaters?...See MorePressure balanced or Thermostatic valve cartridge?
Comments (1)Untrue. No reason you can't get the same benefits of a thermostatic valve with just one showerhead, and certainly two....See MorePressure Balance Vs Thermostatic Shower Body Valves
Comments (11)I am thinking that you simply are reacting negatively to the newly implemented 2.5 gpm restriction. As you point out in your other thread, going from 8 gpm to what you have now is a huge adjustment. Will your plumber (or contractor) tell you if 3/4" pipe was ripped out? Or was it also 1/2"? You are right that either are in the code, but does the valve and shower head combo prevent any difference in what gets to you in the shower, anyhow? Does your apartment building now require 1/2" and that is why you got it? However, if the supply valve is supplying a satisfying pressure at a "warm" setting, where both hot and cold are mixed, I understand your question about why you can't get the same pressure and volume of water when you turn to only hot water. Barnes Custom Builder does not address that in their first answer. It sounds like you are willing to replace your valve if that will get you the shower you want, you just want someone with more understanding of the way these valves work to give you word that it will be worth it. I can understand your reasoning about the valve you have, because the handle controls both volume and temperature, you should have max volume at the highest temperature, yet you are getting less pressure with just hot water being called to the shower. What is going on? Does pressure coming from the hot water tank naturally differ from the pressure of the cold water delivered directly from the city? These are all questions that a plumbing professional with an understanding of the dynamics of this type of apartment building situation needs to address with you....See MoreWhat is a combination thermostatic/pressure balanced shower valve?
Comments (2)My best guess is that the hybrid does not let you adjust the water pressure? But perhaps you can set the temp and leave it when you turn the shower off? But that is just a guess. I couldn't find any of that technical info on their site (I'm sure you looked as well) I would assume that whoever is selling you this manufacture should have that info. I have never heard of them, but I do see it is a Canadian company....See MoreMongoCT
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