Liquid chlorine cut-off valve

A fluorine-lined ball valve will do; pneumatic or electric ones are both acceptable. If cost is not a concern, use ceramic ball valves; they are durable and long-lasting.

Now some places require that liquid chlorine valves use diaphragm sealing, right?

Dual sealing with bellows and packing is better

This post was last edited by shiwendong on 2017-7-21 at 22:49. Pneumatic ball valve designed for liquid chlorine – A pneumatic ball valve specifically intended for use with chlorine, model: YQ641F46-16. Introduction to the pneumatic ball valve for liquid chlorine: This valve is a fully lined, corrosion-resistant type of valve. The inner walls of the valve body and cover, as well as other pressure-bearing components that come into contact with the medium, and the outer surfaces of components such as the valve stem, butterfly plate, and plug are coated with a layer of fluoroplastic of a certain thickness using molding techniques. This makes it a corrosion-resistant pneumatic valve. In addition to its excellent chemical stability, it also features good anti-fouling and anti-adhesion properties; its static and dynamic friction coefficients are very low and similar to each other, giving it good anti-friction and lubricating properties. Leveraging its unique properties in resisting highly corrosive media, it exhibits inert behavior in various concentrations of hydrochloric acid, dry chlorine, wet chlorine, aqua regia, organic acids, strong oxidizing agents, alternating concentrations of acids and bases, as well as various organic solvents. Technical parameters: Valve body type: Floating ball. Nominal diameter DN (mm): 15–300. Nominal pressure (MPa): PN1.0, 1.6. Connection type: Flange. Sealing filler: Polytetrafluoroethylene (PTFE). Media used: Dry chlorine, wet chlorine, acids, highly corrosive media. Operating range: 0–90°. Supply pressure: 0.4–0.7 MPa. Gas connection interfaces: G1/4, G1/8, G3/8, G1/2. Ambient temperature: -30–+70°C. Optional accessories: Positioner, solenoid valve, air filter regulator, check valve, limit switch, valve position transmitter, handwheel mechanism, etc. When the valve is in the fully open or fully closed position, the sealing surfaces of the ball and the valve seat are separated from the medium, ensuring excellent sealing performance and complete leakage prevention. A new type of rod-mounted sphere, featuring a unique elastic lip-type sealing seat structure. It possesses all the advantages of a conventional ball valve, offering high sealing performance and low operating torque across wide ranges of pressure differences and temperature variations. Operating principle of the pneumatic ball valve designed for chlorine: When air pressure enters the chamber between the two pistons in the cylinder through port (2), it causes the two pistons to separate and move towards opposite ends of the cylinder, forcing the springs at those ends to compress. The air in the air chambers at the ends is discharged through port (4), while simultaneously the racks attached to the pistons drive the output shaft (gear) to rotate counterclockwise. After the air source pressure is switched via the solenoid valve, the two pistons in the cylinder move toward the center under the force of the springs. The air in the central air chamber is discharged through port (2), simultaneously causing the rack attached to the two pistons to drive the output shaft (gear) to rotate in a clockwise direction. (If the piston is installed in the opposite direction, the output shaft will rotate in the opposite direction when the spring returns to its original position.) ① Air-operated off type (B) – The valve is in the open position (FO) when there is no air supply ； Air-operated type (K) – the valve closes when air supply is lost. The working principle of the FC liquid chlorine-specific pneumatic ball valve of the double-acting type is as follows: When air pressure enters the chamber between the two pistons in the cylinder through port (2), it causes the two pistons to separate and move towards opposite ends of the cylinder. The air in the air chambers at those ends is discharged through port (4), and at the same time, the racks attached to the pistons drive the output shaft (gear) to rotate counterclockwise. Conversely, when the air source pressure enters the air chambers at both ends of the cylinder through port (4), it causes the two pistons to move toward the center of the cylinder. The air in the central chamber is discharged through port (2), and this action simultaneously causes the rack connected to the two pistons to drive the output shaft (gear) to rotate in a clockwise direction. (If the piston is installed in the opposite direction, the output shaft will rotate in the opposite direction.) ① Air-shut type (B) – Valve position remains unchanged when air is lost (FL) ； Air-operated type (K) – The valve position remains unchanged when air is lost. This is a pneumatic ball valve designed specifically for liquid chlorine; in such valves, the part where the ball comes into contact with the sealing seat is designed as a cantilevered lip, thereby creating a buffer zone between the valve body and the sealing ring. This allows for automatic compensation for leaks caused by wear of the sealing seat, sudden changes in temperature and pressure, or plastic deformation, thereby improving the sealing performance and extending the service life of the valve. For more details, please refer to: http://www.shylfm.com/lb23_1.html

Hello, you can join my WeChat group for the national chlorine industry to discuss technology, equipment, and design – contact number: 13324528344