ZAZP, ZAZN, ZAZS, ZAZM-II electric control valves include ZAZP electric single seat valve, ZAZN electric double seat valve, ZAZS electric angle valve, and ZAZM electric sleeve valve (hereinafter referred to as electric control valves). Electric regulating valves can accept 0-10mA · DC direct current signals, and automatically control the valve opening according to the signal size, thereby achieving the regulation of the medium.

Characteristics of electric control valve:
1. A single seat valve has only one valve seat inside. When the nominal diameter is less than 25mm, the valve core is a single guide structure, while all other specifications are double guide structures. The leakage of a single seat valve is small, but the unbalanced force of the fluid acting on the valve core is large.
2. The double seat valve has two valve seats inside, with a double spherical valve core and a double guiding structure. The leakage of a double seat valve is greater than that of a single seat valve, but it has the advantages of a larger flow coefficient and smaller unbalanced force.
3. Angle valve is a right angle single guide structure with a simple flow path, low resistance, and low leakage. Suitable for regulating high viscosity fluids containing suspended and granular media, it can avoid coking, bonding, blockage, etc., and is also easy to clean.
4. Sleeve valve is a type of valve that inserts a cylindrical sleeve into a single seat valve. The sleeve has a window with certain flow characteristics, and the cylindrical valve core slides axially along the sleeve wall guided by the sleeve to change the opening area on the sleeve, achieving the purpose of regulating flow. Sleeve valves have a larger flow coefficient than double seat valves. And it allows for a large pressure difference and good stability. Due to the high stiffness of the guiding structure, it is not easy to generate vibration during operation. By replacing different sleeves, different flow capacities and flow characteristics can be obtained. The sleeve valve has fewer threaded connections, making it easy to assemble and disassemble. Due to the aforementioned characteristics, sleeve valves can replace single or double seat regulating valves in most usage scenarios.