Do you understand how to choose a valve actuator?
Strength Performance: The strength performance of a valve actuator refers to its ability to withstand the pressure of the medium. Valves are mechanical products that withstand internal pressure, therefore requiring sufficient strength and rigidity to ensure long-term use without deformation or breakage.
Sealing Performance: The sealing performance of a valve actuator refers to its ability to prevent medium leakage through the valve's sealing components. This is a crucial technical performance indicator for valves. The three sealing components of a valve actuator include: the contact between the opening/closing element and the valve seat; the contact between the packing and the valve stem and stuffing box; and the contact between the valve body and the valve cover. Leakage in the first part is called internal leakage, often referred to as incomplete closure, which affects the valve's ability to cut off the medium.
Flowing Medium: When the medium flows through the valve, pressure loss occurs, meaning the valve provides some resistance to the flow of the medium. To overcome this resistance, the medium must overcome a certain amount of resistance. When designing and manufacturing valve actuators, the resistance to the flowing medium should be minimized as much as possible.
Opening/Closing Speed: The opening/closing speed is expressed as the time required for the valve actuator to complete the opening and closing action. Generally, there are no strict requirements for the opening and closing speed of valves. A few require rapid closing or opening to prevent accidents, while some require the supplier to slowly open or close the valve to prevent water hammer. Careful consideration should be given when selecting the type of electric actuator for the valve.
