Power outageAutomaticOpen valveOr shut off valve，Second-tierThe actuator has only two wires, the neutral (or common) wire and the live (or positive) wire, and the actuator is generallyDC3V motor, powered by a Faraday capacitor or lithium battery, provides power to the actuator motor during power outages, enabling the actuator motor to operate.DynamicValveOn or OffThe lifespan of this type of actuator is significantly affected by the DC motor brushes and the lifespan of the electrolytic capacitors (or lithium batteries). It is generally used in special applications, such as solar heating equipment, coal-to-electricity conversion equipment, and situations where power needs to be interrupted.Automatic open or closeValve location.

Regarding the small-bore electric ball valves primarily used in two-link supply systems, fan coil units, solar heating, coal-to-electricity conversion, and heating industries, the general driving torque is typically4-6 Nm, valve port diameter is typically DN15-DN40; for pipe sizes over DN40, it is recommended to use an electric actuator with higher driving torque.