Czy wolisz polską wersję strony elektroda?
Nie, dziękuję Przekieruj mnie tamjaskiniowiec24 wrote:It will drip from the safety valve until the pressure drops to such a level that the valve closes.because I'm afraid if it warms the water to 70 degrees or something will happen?
jaskiniowiec24 wrote:but we don't know what the valve opens at.the pressure rises to 8bar
Krzys55 wrote:It doesn't have to be, it is recommended. I think that the vast majority of apartment block dwellers with water heating with a boiler, especially small bathrooms, have nowhere to install, one more device.The dish must be there !!!
jaskiniowiec24 wrote:And this is normal, because it plays a similar role as a safety valve.I noticed that it is enough to turn on the hot water tap for a second and it drops to the set 2 bar.
stanislaw1954 wrote:Must, because they will not take into account the warranty on the boiler in the event of a breakdown.It doesn't have to be, it is recommended. I think that the vast majority of apartment block dwellers with water heating with a boiler, especially small bathrooms, have nowhere to install, one more device.
jaskiniowiec24 wrote:If you do not have space, just drain the water through a hose to the sewage system or, for example, to a washbasin. You can lower the heating temperature and then the pressure will not increase as much.Do I have to use something else besides the dish?
Krzys55 wrote:If there is such an entry in the boiler warranty, because when buying a boiler, there is a safety valve that must be installed.Must, because they will not take into account the warranty on the boiler in the event of a breakdown.
jaskiniowiec24 wrote:Nothing will happen because the safety valve will work. But as I wrote earlier, this is a last resort. If you want to sleep in peace, only the expansion vessel saves you.It's not just about dripping, but how do I set a higher temperature of 70 degrees per hour to kill the legionnaires, or will nothing happen?
Krzys55 wrote:I do not force anything on anyone. I propose, explain the action, and the decision is up to the "client". If there is something that cannot be installed, then I disagree, and the vessel is voluntary.This is your approach to the matter?
jaskiniowiec24 wrote:Is the regulator only for the boiler or for the entire installation?If there is something to be done, please give me a different hint.
Zbych034 wrote:The non-return valve is used to shut off the return of water to the system and whether it is integrated or not, its task is only that. From other circumstances (installations) it is known that it works with a slight delay - hydrophore pumps, but this is natural => the pump pumps water to a certain pressure, turns off, and looking at the pressure gauge, we can see that the pressure has dropped, because it takes a few moments for the valve to open will close !!!There are safety valves connected to a non-return valve. If it is enough to withdraw the water into the pipes, if the pressure is too high, it is dripping outside.
Zbych034 wrote:There are safety valves connected to a non-return valve. If it is enough to withdraw the water into the pipes, if the pressure is too high, it is dripping outside.
Zbych034 wrote:I am asking for a specific model, because I was looking for a bit on the Internet and I did not find one. I completely agree withWhat I wrote about is not an ordinary check valve. At a pressure below the setting, it works classically, after exceeding how it can pull the water "back", when the pressure does not drop further, it releases it outside.
retrofood wrote:The situation is absolutely unacceptable with this backflow of water
TL;DR: Heating 55 L of water from 10 °C to 50 °C expands volume ≈1 L, spiking pressure from 2 bar to 8 bar—“the dish must be there!” [Elektroda, Krzys55, post #16442991] Fit a 5 L diaphragm vessel behind the check valve to cap pressure below 4 bar.
Why it matters: Unchecked over-pressure cracks enamel tanks and voids warranties.
• Safety valve set point: Typical 6–7 bar (Biawar manual). • Water expansion: +2 % between 10 °C and 70 °C [ASHRAE, 2020]. • Recommended domestic hot-water static pressure: 2–4 bar [EU DWG, 2019]. • 5 L potable-water expansion vessel cost: €25–€40 (market survey 2023).
