What are the classifications of ball valves?

1. Classified according to the structure of the valve body:
It can be divided into top entry ball valve and side entry ball valve. The side-mounted ball valve can be divided into integral type, two-stage type and three-stage type. Composed of three structural forms.
2. Classified by valve sealing material:
It can be divided into soft sealing ball valve and hard sealing ball valve. The sealing material of the soft sealing ball valve is: polytetrafluoroethylene (PTFE), reinforced polytetrafluoroethylene, nylon and other polymer materials and rubber, and the sealing material of the hard sealing ball valve is metal.
3. According to the function of the valve:
It can be divided into two-way switch valve, three-way and four-way reversing valve, and regulating ball valve.
4. Classified by operation mode:
It can be divided into manual, worm gear transmission, pneumatic, gas-hydraulic linkage, electric, electro-hydraulic linkage, hydraulic and so on. According to the connection mode of the valve, it can be divided into flange end connection, welding end connection and threaded end connection, and the welding end can be divided into socket welding and butt welding connection. , such as pipeline ball valves for long-distance pipelines; jacketed ball valves for pipeline heating and heat preservation; plastic-lined ball valves for anti-corrosion: slag lock ball valves for slag liquid discharge in coal gasification furnaces, and drain ball valves for high-temperature and high-pressure steam in power plants, etc. .
5. Classified according to the shape and size of the sphere of the ball valve opening and closing parts:
It can be divided into V-shaped ball valves, hemispherical valves, full-bore and reduced-bore ball valves, etc.
6. Classified according to the temperature of the medium used:
It can be divided into high temperature ball valve, low temperature ball valve and cryogenic ball valve.
7. According to the valve body material classification:
Can be divided into carbon steel ball valves, stainless steel ball valves, titanium alloy ball valves, Monel ball valves, plastic ball valves, copper ball valves, aluminum alloy ball valves, etc.