Product introduction:
Q41-25c is a cast steel flange ball valve suitable for PN25 on various pipeline, used for cutting off or connecting pipeline medium, material for cast steel, can be used for water, steam, oil, liquefied gas, natural gas, gas, acetic acid, oxidation medium, urea and other media. Ball valve is a ball with a circular channel as the opening and closing parts, the ball with the stem rotation to achieve the opening and closing action of the valve. The opening and closing part of the ball valve is a ball with a hole, rotating around the axis perpendicular to the channel, thus achieving the purpose of opening and closing the channel. Ball valves are mainly used to open and close pipelines and equipment media.
The main advantages of the ball valve are as follows:
1, small fluid resistance, ball valve is all the valve class of fluid resistance is the least, even if the reduced diameter ball valve, its fluid resistance is also quite small.
2. The thrust bearing can reduce the friction torque of valve stem, which can make the valve stem operate smoothly and flexibly for a long time.
3, seat sealing performance is good, the use of polytetrafluoroethylene and other elastic materials made of the sealing ring, the structure is easy to seal, and the ball valve sealing capacity with the increase of medium pressure and increase.
4, the valve stem seal is reliable, because the valve stem only as if rotating movement without lifting movement, the packing seal of the valve stem is not easy to destroy, and the sealing capacity increases with the pressure of the medium.
5, because ptfe and other materials have good self-lubrication, friction loss with the ball valve is small, so the service life of the ball valve is long.
6. The lower valve stem and the protruding step of the stem head prevent the valve stem from ejecting. In case of damage of the valve stem seal caused by fire, metal contact can be formed between the protruding step and the valve body to ensure the valve stem seal.
7. Anti-static function: spring is set between the ball, valve stem and valve body to export the static electricity generated in the switching process.
Scope of use: the product can be used in petroleum, chemical and other industries.
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