The function of the bypass valve
Thread Content
Recently, when looking at flowcharts, I saw some designs for branch valves, but there were quite a few variations. I hope to discuss the models and functions of the auxiliary valve that I have seen.
The bypass valve is usually a gate valve; its main function is to divert the fluid to the bypass route when there are problems with the control valve, thereby facilitating the maintenance of the control valve. It is generally used in conjunction with the valves upstream and downstream of the control valve.
I hope everyone will participate actively; I will give scores to those who do.
The flowcharts I’ve seen generally use stop valves, as they facilitate flow regulation when a bypass line is used
A globe valve is generally used for the bypass line of the control valve, to facilitate flow regulation in case of a fault with the control valve.
The control valve bypass is mainly used during maintenance of the control valve; it allows for switching via a bypass line. A globe valve is employed, which can regulate the flow rate to a certain extent
The bypass valve of large steam pipes is used to facilitate the opening of the main valve. (The pressure difference before and after is large, making it very difficult to open the main valve). There is also a secondary valve (with a flow-limiting orifice plate) designed to preheat pipes or equipment.
Normally, branch valves are used for regulation, maintenance, and backflow control; GATE VALVES and BALL VALVES are generally chosen for this purpose
Looking at the installation location of the bypass valve, it is usually a globe valve; for the dry absorption section, the bypass valve can also serve to provide insulation.
There are branch line valves, such as globe valves and gate valves; this time I also saw throttle valves as well. It depends on the process requirements
This post was last edited by Trace elements on 2014-9-10 at 10:41. Auxiliary control valves, gate valves, and stop valves are chosen depending on the process requirements; their main purpose is to ensure normal production during valve maintenance or when problems arise. Additionally, if the material has a high freezing point, the bypass valve should be arranged separately from the control valve.