Pneumatic ball valve
is composed of a pneumatic actuator and a ball valve. It is widely used in various pipelines. Today, let's take a look at the characteristics of the pneumatic ball valve structure. The structural features of the pneumatic ball valve are: 1. Pneumatic actuator: the new series GT type pneumatic actuator is adopted, with double-acting and single-acting (spring return), rack and pinion drive, safe and reliable; large-diameter valves use series HAW-type pneumatic actuators Actuator fork type transmission, reasonable structure, large output torque, double-acting and single-acting (spring return); 2. Unique seat sealing structure: The floating ball valve adopts the lip-type elastic sealing ring structure design to ensure the sealing High reliability, for low pressure, ultra-low pressure or vacuum; the normal use of the ball valve, the use of leaf spring loaded valve seat sealing structure, can ensure long-term reliable sealing of the ball valve. The seat material of the medium and high temperature ball valve can be made of para-polyphenylene or metal material. The fixed ball valve chooses the sealing structure before the ball, the sealing structure after the ball or the double sealing structure before and after the ball according to the size of the pressure, the properties of the medium and the sealing requirements. The seat material of the medium and high temperature ball valve can be made of para-polyphenylene or metal material. 3. Blocking and excretion: When the valve is in the closed state, the valve seat on the upstream and downstream sides blocks the liquid, and the accumulation in the cavity of the valve body can be excreted through the excretion device. 4. Reliable sealing of the valve stem: The valve stem adopts a bottom-mounted structure with an inverted seal. The sealing force of the inverted seal increases with the increase of the medium pressure, so it can ensure the reliable sealing of the valve stem. Moreover, when the valve stem is abnormally boosted , the valve stem will not be ejected. 5. Fireproof structure: According to the working conditions and the needs of users, the ball valve can be designed as a fireproof structure. The fire-resistant design of the ball valve complies with the provisions of API607 and JB/T6899 standards. Once a fire occurs and the soft sealing ring is burned, the fire-resistant structure of the ball valve can prevent a large amount of leakage of the medium and prevent the further expansion of the fire. 6. Anti-static structure: When the valve is operated, due to the friction between the ball and the valve seat, electrostatic charges will be generated and accumulated on the ball. The charge on the derivation.
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