Electric cage sleeve axial flow labyrinth control valve

Common problems in product selection

ZL941 is used for larger pressure differentials, do we still need to choose specialized valve internals?

Need. Please provide the upstream and downstream pressure, medium temperature, and flow range to assess the risks of noise, cavitation, flash evaporation, and erosion. The name of sleeve or cage does not equal the already configured multi-stage pressure reducing or anti cavitation valve internals, and the specific plan should be confirmed according to the working conditions.

Do I need to confirm the input signal and valve position feedback when connecting ZL941 to DCS?

It is necessary to confirm the control input, valve position feedback, power or gas source conditions, interfaces, and fault location separately. Input and feedback are not the same function, and it cannot be assumed that all analog signals or communication protocols are fully equipped based solely on the name "regulating type".

Will ZL941 automatically shut down after a power outage?

The power-off action cannot be determined solely by the name of the electric drive. Ordinary electric actuator cannot default to having automatic valve closing function when power is lost; If the process requires fault closure, the energy storage or other fault safety scheme of the actuator should be confirmed at the time of ordering, and the entire valve interlock verification should be completed.