Balance valve pilot operated relief valve DPBC-LAN

1. Is the balance valve adjusting rod screwed to a minimum of 140bar and a maximum of 350bar?

A: The pressure adjustment range of the balance valve is 140Bar-350bar, which does not mean that the maximum adjusting pressure is 350bar and the minimum adjusting pressure is 140bar; The 140bar here means that the minimum regulating pressure can be adjusted to 140bar (the actual minimum pressure is lower than 140bar), and 350bar means that the maximum regulating pressure can be adjusted to 350bar (the actual maximum pressure is also higher than 350bar).

Some people may wonder, why can't the maximum and minimum values be fixed? As an industrial product, the assembly size of the spool and the difference of the working spring determine that it is very difficult to fix the maximum and minimum setpoint. If the maximum and minimum values need to be fixed, the production cost of this spool will be very high and the user will not accept it. At the same time, the actual use is meaningless.

In short, the so-called adjustment range is the value that can meet the needs of your working condition setting.

2. Can the balance valve be adjusted with load?

A: It is very, very not recommended that you adjust the balance valve under load, because there is a great risk. The balance valve greatly improves the stability of the control because of the special adjustment structure, but the disadvantage of this structure is that the tolerable limit torque is not large, especially in the case of load. In the case of heavy load, there is a certain probability that the regulating rod will be damaged