2) to distinguish the different type pneumatic ball valve analysis

to distinguish the different type pneumatic ball valve?
in the first place, to distinguish from structure, the single ball in the pneumatic valve, ptfe ring, lock nut of the ball slightly smaller than the pipe diameter, similar Yu Guangshi ball diameter. Two balls pneumatic valve is composed of two parts, seal than the pneumatic ball valve, ball diameter and pipe diameter, same than an easily removable pneumatic ball valve. Three type pneumatic ball valve is composed of three parts, the pneumatic valve cover and pneumatic valve body, three different type pneumatic ball valve is of the two type pneumatic ball valve, pneumatic valve, ball where is the middle of the maintenance decision. Secondly, from the pressure difference between the three pressure than a pneumatic valve and two balls. Outside the main three type pneumatic ball valve fixed four bolts, fastening play a good role. Casting pressure pneumatic valve can achieve psi material. MPa。 Forging a higher pressure is necessary to use the body. Third, from an economic point of the difference between a pneumatic valve as the main raw material ball than the other two kinds, the most preferential price, less cantonese USES the same ball. Two balls pneumatic valve the style of the price is higher, ability of three pressure in a higher body consists of three parts, material, than that of the other two types of unknown incredible price comparison of air compressor, the compressor is high