Classification and characteristics of pneumatic ball valve
Pneumatic ball valves have O-type ball valves and V-type ball valves. O-type ball valve adopts floating structure, the ball core is precision casting, the surface is plated with hard chrome, the seat adopts enhanced polytetrafluoroethylene material, the caliber of the runner and the pipeline is the same, the flow capacity is very large, the flow resistance is very small, no leakage when closed, generally used as an on-off valve, especially suitable for high viscosity, fiber, granular media; V-shaped ball valve adopts fixed structure, and V-shaped incision is opened on the ball core, which can realize proportional adjustment, and the flow characteristic is approximately equal percentage.
Pneumatic ball valve according to different process equipment can choose pneumatic or electric actuator, respectively composed of pneumatic ball valve and electric ball valve, which pneumatic ball valve if to achieve proportional adjustment must be equipped with valve positioner, electric ball valve if to achieve proportional adjustment must choose electronic electric actuator or with servo amplifier.
From the material, can be divided into: carbon steel ball valve, stainless steel 304 ball valve,316 ball valve and copper ball valve.
In application, it can be divided into: high pressure ball valve and low pressure ball valve.
High-pressure pneumatic ball valve: mainly used in petroleum, natural gas, hydraulic oil, construction machinery and other industries.
Low pressure pneumatic ball valve: mainly used in corrosive pipes such as water.