Electric control valve engineering standards and product standards

- - - - - - - - - - - - : electric control valve is mainly composed of body, sleeve, disc, stem and other parts. Sleeve and the disc drive with orifice by rotary disc in the seat to change flow area, regulate traffic. With ZKJ type or other type electric quarter-turn actuators can realize remote control and automatic control. Electric control valve is widely used in water supply is used to adjust flow line, also can be used in the oil pipeline. Electric control valve motor running of internal heat generating thermal protection, electric regulator to stop work; After multiple reduction due to motor to the output torque, so speed is not fast, in some requiring quick opening and closing is not applicable, big torque and high speed, is a more difficult to solve the contradiction between; Because of the moving parts, relatively prone to failure, especially in adjusting the working condition of frequent, easy to produce motor thermal protection, gear damage, module of fault, thyristor burnt under such conditions, good or choose pneumatic - valve is good. Standard GB/T - electric regulator 'The common valve pressure test' (JB/T - The common valve flow coefficient and flow resistance coefficient test method '(JB/T - The normal valve electric actuator technical conditions GB - The universal signal valve engineering standard GB - electric regulator The ventilation and air conditioning engineering construction quality acceptance specification GB - The building water supply and drainage and heating engineering construction quality acceptance specification'