Should there be this wiring valve? (HC)
Thread Content
The hydrocracking unit of our factory is currently under construction, and we are preparing to produce qualified products on October 1, as a great gift for the 60th birthday of the motherland! The drawings given to us by the design institute are: The large line control valve of the reaction system has a line valve! And some of us think it shouldn’t be added. The reason is: One more valve, one more leak point! Some people think it should be added, so that when the control valve fails, the control valve can be cut out without shutting down the work! So I want to see what everyone thinks?
The auxiliary line valve is definitely required. What should I do if the control valve freezes and fails in winter? Although the possibility is unlikely, once it occurs, it will be over. This sub-line is necessary.
The control valve must have a auxiliary line valve. If there is no auxiliary line valve, how to operate it if the regulating valve is broken? Besides, the high-pressure part like the cold hydrogen line does not need to have a auxiliary line valve to reduce leakage points, but like the general auxiliary line, that is, the low-pressure part, this must be added.
A large valve has a large pressure difference and needs to overcome a large friction force when opening and closing. A small auxiliary line valve is added to the large valve to balance the pressure difference before and after the large valve, making it easier to open and close the large valve.