Discuss the issue of keeping or removing the vent valve in high-pressure systems
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The issue of whether to retain the vent valve in high-pressure systems: In older installations, such vent valves were always included in the design. However, some newer installations omit this vent valve. Whether to keep it or not is a matter of personal opinion and different perspectives
This post was last edited by ythwangbo on 2010-11-5 at 17:58. Nowadays, foreigners prohibit the use of high and low pressure systems; they do not approve such designs. If such systems are used, they will cause environmental pollution, and some manufacturers engage in risky practices by continuing to use them despite the need to stop. There is a lack of measures to ensure that operators remain vigilant and to strictly control system pressure
It seems it’s not that crucial after all; otherwise, there would be no need to argue about whether to keep it or not.
You should know that a valve like this still has to be worth something – imported ones cost millions
Personally, I think it is still necessary; in case the system experiences overpressure, it can be vented urgently to ensure safety.
This valve was designed for safety, and for that very reason, it shouldn’t be removed.
For units that can start up with feed at low pressure, it may not be necessary to have such a vent valve; otherwise, the valve must be retained.
For devices equipped with this valve, are they used for pressure relief during normal production operations, aside from start-up and shutdown procedures? Anyway, I haven’t seen any other uses for it. Has the machine stopped running due to a fault with this valve? It should be understood that every additional such point represents an extra potential hazard. By using the low-pressure startup method, the function of starting up this valve can be fully replaced; during shutdown, the pressure can be released gradually into the circulation system. If we establish strict operational rules requiring that the system pressure be stopped when it exceeds 15 MPa, and if our operators increase the sensitivity of the parameters during operation so as to take action promptly when an upward trend in pressure is detected, instead of always relying on this valve – would anyone still dare to go to the site once this valve is opened? Claiming to retain this valve for safety is purely an excuse to shirk responsibility.
Friends, this valve is not installed for safety purposes; it’s best not to misunderstand that. For safety reasons, there are PSVs, and there are two of them. This valve is a control valve used in high-pressure startup procedures.
Yes, it’s good; it’s mainly used for driving, but it can also be used in cases of overpressure, although it is not environmentally friendly. When talking about driving at high pressure, one thinks of driving at low pressure – is this a feature exclusive to new factories? I wonder if there are any old factories in use these days?