The double seat control valve adopts double guide structure and is equipped with multi spring actuator. The utility model has the advantages of compact structure, light weight, sensitive action, large valve capacity, flow characteristics, convenient disassembly, etc. It is widely used to control the process parameters of gas, liquid, steam and other media, such as pressure, flow, temperature and liquid level, to keep at a given value. It is especially suitable for the occasions where the pressure difference is large, the leakage is large and the medium is not very clean.

Double seat control valve is used to regulate the flow, pressure and liquid level of medium. According to the signal of the regulating part, the opening of the valve is automatically controlled, so as to achieve the regulation of medium flow, pressure and liquid level. The control valve consists of electric actuator or pneumatic actuator and control valve. The latter has the characteristics of large flow capacity, small imbalance and stable operation, so it is especially suitable for large flow, high pressure drop and less leakage.

Valve is the control component of fluid transportation system, which has the functions of cut-off, regulation, diversion, prevention of countercurrent, pressure stabilization, shunt or overflow relief. Valves used in fluid control system, from * simple stop valve to * various valves used in complex automatic control system, have many varieties and specifications. The valve can be used to control the flow of air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media.

There are standard type, bellows sealing type, jacket insulation type and other varieties. The nominal pressure rating of the product is dn25-400. The applicable fluid temperature ranges from - 250 ℃ to + 560 ℃. The leakage standard is grade III and grade IV. The flow characteristics are linear or percentage. A variety of varieties and specifications are available.

Double seat control valve: with the advantages of large rated flow coefficient and small unbalanced force, it is widely used.