Zhejiang YHG Flow Contro Co.,Ltd.

The ball valve is a rotary-operated stop valve with a ball inside the valve body as the disc. The ball valve controls the flow of media by rotating the ball. The round hole on the ball is paired with the sealing surface on the valve cover to open or close the fluid.Ball valves have a wide range of applications and are widely used in petroleum, chemical, natural gas, water treatment and other industrial fields. According to the requirements of the medium, ball valves can be made of different materials, such as stainless steel, carbon steel, cast iron, etc. In addition, ball valves can also adopt different structural forms according to needs, such as full-through ball valves, fixed ball valves, socket-type ball valves, etc., to meet the requirements of different working conditions.

Gate valve is a common hydraulic control device widely used in industry, construction, municipal administration, agriculture and other fields. Gate valves control the flow of fluid by raising or lowering the valve plate. Its working principle is to control the flow of fluid through the gap between the valve plate and the valve seat. The main features of the gate valve are simple structure, small size, light weight, large flow capacity and good sealing. It can be operated manually or equipped with electric or pneumatic devices for remote automatic control. Gate valve consists of valve body, valve cover, valve stem, valve plate and other components. Usually, the valve body and valve cover are made of cast iron, ductile iron, carbon steel and other materials to ensure the strength and corrosion resistance of the valve. The valve plate is usually removable for easy maintenance and replacement. The valve stem is used to control the lifting and lowering of the valve plate and can be driven by a handwheel, motor or cylinder.

A stop valve (also called a check valve) is a device that prevents fluid from flowing back, mainly used in pipeline systems. The stop valve can control the flow direction of the fluid through the valve disc or ball inside the valve body, thereby achieving one-way flow of fluid. Globe valves are generally divided into many different types, including lift valves, swing valves, ball valves, and more. Each type of stop valve has its specific working principle and application scenarios. Lift valve is a common stop valve. It consists of valve body, valve disc and valve seat. When the fluid flow direction is consistent with the vertical plane on the valve disc, the valve disc will be raised, thereby opening the channel and allowing fluid to flow. When the fluid flows in the reverse direction, the pressure of the fluid pushes the valve disc down and the valve closes, preventing the reverse flow of the fluid.

Check valve is a common fluid control device, also known as non-return valve, reverse water valve or check valve. Its main function is to prevent fluid from flowing back in the pipeline system and maintain one-way flow of fluid even when the fluid supply is stopped or the power is cut off. The check valve achieves its function through a simple design. It usually consists of valve body, valve cover, valve disc and spring. When the direction of fluid flow is consistent with the arrow on the valve disc, the valve disc will open and the fluid can pass smoothly. When the reverse flow of fluid occurs, the valve disc will be pushed toward the valve body, closing the channel and preventing the reverse flow of fluid. Check valves are usually divided into many types, including lift type, swing type, ball type, plug-in type, etc. Each type of check valve has its specific working principle and applicable scenarios.

Butterfly valve is a commonly used fluid control valve, which consists of valve body, valve plate, valve stem, sealing ring and driving device. The valve plate of the butterfly valve is like a butterfly wing, hence the name. The butterfly valve mainly controls the fluid through the rotation of the valve plate. When the valve plate is aligned with the pipe, fluid can pass freely; when the valve plate is perpendicular to the pipe, the valve closes, preventing the flow of fluid.Butterfly valves have many different types and structures, such as cartridge butterfly valves, triple eccentric butterfly valves, double eccentric butterfly valves, etc. Each type of butterfly valve has its specific application scenarios and working principles, and the appropriate type and specifications need to be selected according to specific needs.

The actuator valve is a valve integrated with an actuator. The actuator can switch, adjust and control the valve through electric, pneumatic or hydraulic means.Depending on the specific application scenarios and requirements, the actuator valve can also have some special functions, such as remote control, feedback signal output, automatic adjustment, etc. These special functions can meet different control and adjustment needs and improve the automation and intelligence level of the valve. Generally speaking, the actuator valve integrates the actuator and the valve, realizes the opening and closing operation of the valve through electric, pneumatic or hydraulic means, and has some special functions. It is widely used in various fluid control systems, improving the stability, reliability and automation level of the system.

A water valve is a device used to control water flow. It can open, close or regulate the passage of water flow. Water valves are mainly used in pipeline systems and can be used in water supply, drainage, irrigation, fire protection systems and other applications.The materials of water valves usually include cast iron, copper, stainless steel, etc. Different materials are selected according to specific use occasions and requirements. In addition, the water valve can also choose different connection methods according to needs, such as threaded connection, flange connection, etc. In general, a water valve is a device used to control water flow. Water valves with different types and functions can meet the water flow control requirements of different occasions and needs.

Part of valve，mainly used for valve maintenance and assembly