The output of the actuator is greater than the load of the valve and is reasonably matched. When checking the standard combination, it is necessary to consider whether the allowable pressure diff ...
It involves a simple mechanical principle - The larger the sliding friction, the lower the rolling friction. The valve stem of the straight stroke valve moves up and down, and the packing is slightly ...
Single-seat valves, double-seat valves, and sleeve valves are equally used today. This is because the sleeve valve only improves the throttling form, stability and reduce the maintenance difficulty co ...
The shut-off valve requires that the leakage is as low as possible. Even though the leakage of the soft-sealed valve is the lowest, and the cutting effect is, of course, good, but it is not wear-resis ...
Determine the calculated flow rate (max and min). Determine the calculated pressure difference - select the resistance ratio value according to the characteristics of the system, and then determi ...
Situations where the friction is large and precise positioning is required, such as high temperature, low-temperature control valves or control valves using flexible graphite packing. Situations ...