Motor Operated Valves - MOV

The ECONTROL Motor Operated Valves (MOV) family of valves are an important item of Plant & Piping system. These valves are generally of large size and are used for different applications such as pump discharge etc. Motor Operated Valves are often called as On-Off valves as the motors serve the purpose of fully opening or fully closing valves in pipelines. For example, cooling water lines, process pipelines where regulation of fluid is not required, motor operated valves can be used to fully allow or fully stop the fluid flow. These valves are not used for throttling or precise control / regulation purposes as they serve mainly On-Off service application.

Key differences between Control Valves and MOV:

• Control valves have a faster response as compared to MOV
• Control valves used to have an analog control element, while the motorized operated valves have a digital control element. This has evolved over the recent years
• Control valves can be used for any type of control: pressure control, flow control, temperature control etc while motorized valves are used for flow control only
• Control valves usually are used in closed loop control, while MOV are predominantly open loop (with the exception of precision flow control valves)
• Control valves are used for precision control. MOV are not intended used for precision control

Motor operated valves can be of various types e.g. Gate/ Ball/ Butterfly etc. with actuator control. Design of Motors and valves is fully integrated by ECONTROL's Valve Engineering Unit (V.E.U.) that precisely engineer all items case-by-case. An electric motor is mounted on the valve and geared to the valve stem so that when the motor operates the valve will open or close. For MOV, motor operation with actuator local control from local panel or from control room is foreseen. Our V.E.U. valve engineers coordinate with end user Piping-Electrical-Instrumentation-Process engineers and for design and engineering of such motor operated valves.