Product model: D373H
Nominal diameter: DN50~2000mm
Pressure rating: PN0.6~4.0MPa
Applicable media: air, water, steam, gas, oil products, and weakly corrosive media such as acids, alkalis, and salts
Applicable temperature: Carbon steel: -29 ℃~425 ℃ Stainless steel: -40 ℃~600 ℃
Drive mode: worm gear transmission, pneumatic transmission, electric transmission, hydraulic transmission
Main materials: cast steel, stainless steel, chromium molybdenum steel, alloy steel, dual phase steel
Product Overview
The high-temperature butterfly valve was optimized and designed by our company's technical personnel after absorbing the structure and characteristics of similar foreign products, overcoming the defects existing in the original product during use, making its lifespan more durable and sealing more reliable. The butterfly valve adopts a three-dimensional eccentric design principle, and the sealing pair is composed of two overlapping conical oblique sections. The center of rotation of the butterfly plate passes through the eccentricity value of the valve body and valve seat, achieving instant contact and separation of opening and closing. The labyrinth seal is achieved by the metal and graphite laminated structure of the butterfly plate sealing ring, which can reduce the opening and closing torque of the valve while ensuring the sealing performance of the butterfly valve. The bidirectional pressure bearing butterfly valve adopts a method of reducing eccentricity value and enhancing the butterfly plate The strength of the valve shaft, actuator, etc. is used to achieve zero leakage in the bidirectional sealing of the inlet and outlet of the butterfly valve.
Its main structural characteristics
1. Adopting an inclined elliptical butterfly plate radial dynamic balance sealing system, the force on both sides of the valve inlet and outlet is approximately balanced, and the opening torque of the valve is small. The forward and reverse sealing performance is reliable, and can achieve bidirectional pressure bearing;
2. The sealing surface of the valve adopts an integral metal sealing ring, which is processed with high-precision machinery. The sealing section is elliptical, and it forms a sealing pair with the metal sealing surface of the valve seat. When the valve is opened or closed, the sealing surface of the butterfly plate instantly contacts or detaches at various points along the 360 ° circumference, which can quickly and accurately achieve opening or closing actions;
3. Adopting a three eccentric structure, which adds an angle eccentricity on top of the double eccentric butterfly valve.