What kind of regulating valve should I choose? Is it best to use a self-operated differential pressure regulating valve? Thanks
Thread Content
This post was last posted by Tianya Wandering on 2013-9-13 22:11 The editor plans to choose a self-operated differential pressure regulating valve for the new equipment for sealing water adjustment: L (For the sake of convenience and reliability, the transmitter + regulating valve method is not considered for the time being, and we do not want to use high-level tank control for the time being) The basic requirements are as follows: Pipe diameter: DN25~40mm nominal pressure: PN7.0Mpa traffic: 5～10t/h operating temperature: 70～96℃ source water pressure: 5.0～6.5Mpa reference pressure: 0.08～4.10Mpa differential pressure control requirements (fluid pressure behind the valve and reference pressure): 0.6～0.9Mpa (inlet pipeline control, the valve closes small when the differential pressure rises):$ Is it possible to choose an independent differential pressure regulating valve that can meet this requirement? :funk: Please feel free to enlighten me. This post was last edited by Tianya Wandering on 2008-1-26 12:46 ]
There is something wrong with your parameters, the flow rate is too fast!
It's definitely a bit on the large side. This valve is intended to be installed in the main water inlet pipe. What if the flow rate is adjusted to 5~10t/h after changing the position? The designed normal flow rate is 5.7~6.8t/h. This post was last edited by Tianya Wandering on 2008-1-22 11:11 ]
The inlet water pressure is too high, right? The DN25 pipe requires more than 60 kilograms of pressure? , you can choose the valve, there are high-pressure valves that can be used, and any one weighing more than 100 kilograms is fine. I have used 160 kilograms, but they are not enough to be installed on the atmospheric pressure tank vent, and they are all old. I didn't find out until I took a look after it was installed. Already used. :L
The pressure is determined by the process conditions. Since the normal flow rate of the pipe diameter is only 5.7~6.8t/h, DN25 is sufficient. Can you tell me which valve type to use and which factory can customize this high-pressure independent differential pressure regulating valve? It would be more convenient to use a high-pressure self-operated differential pressure regulating valve to solve this problem. I really don't want to use a high-level tank or a transmitter + regulating valve to solve this problem. Thanks
Too late to watch. :'(What is it? It's not good for a technical person to make a big mistake.
Why is it blocked? What are the taboos about speaking?
Can reach pressure of 300kg.
I forgot to mention, the diameter is only one inch, if it is larger, the price will be higher.
It seems that we have to consider the differential pressure transmitter + regulating valve method.
Indeed, the general self-operated type does not have such a large pressure regulating range. Even if it is customized, it is expensive, much more than the price of the pressure + regulating valve, and the adjustment accuracy cannot be guaranteed. However, since the poster finds it troublesome, you can also try an integrated flow regulating valve (dynamic balance valve), which should be able to meet your requirements.
Cross-version rating is not allowed, thank you Feng Qingqing, friend:handshake. Can you briefly introduce the principle of "mechanical flow dynamic balancing valve"? I have always been fond of the reliability of mechanical regulating valves. Thank you Feng Qingqing, so delicate.
I still have a soft spot for self-operated differential pressure control valves. Even if the price is similar to that of regulating valves, I think it is worth it. Who can tell me which manufacturer can customize it? Thanks