Question regarding breather valve
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Regarding breather valves, for the same diameter (under the same operating conditions), is the price of a pilot-operated breather valve much higher than that of a gravity spring-type one?
Structural technology and materials determine the price of valves. ;P
It is recommended that for critical equipment located in key areas, unless the price is extremely high, cost should not be a factor to consider. It would be three times as much at a higher height, which is around ten thousand yuan (for ones with a not very large caliber).
Yes, it will. Weigh it, and it will be different.
This post was last edited by feilong213_NQPB on 2020-4-13 16:18. The pilot type is relatively complex and costs much more.
Of course, the pilot valve of a pilot-operated vent valve can be much more precise than the spring of a gravity-spring operated vent valve. For pilot-operated breathing valves, the better the sealing performance as the pressure approaches the set value. Spring-operated breathing valves, similar to safety valves, start to leak at 90% of the set pressure, and the higher the pressure, the more severe the leakage.