Product DescriptionOverview and use:
Elastic metal sealing butterfly valve adopts stainless steel U-shaped elastic sealing ring, which is consistent with polished butterfly plate, and has good sealing performance. It is suitable for adjusting flow and cutting off fluid in metallurgical, electric power, petrochemical, air, gas, water supply and drainage and other medium pipelines with medium temperature ≤425ºC. On the basis of this structure, PTFE can be used instead of multi-layer sealing ring to form a new generation of tri-eccentric PTFE sealing butterfly valve, which is widely used in corrosive medium with temperature ≤200ºC.
Features:
1. The butterfly plate is machined into an eccentric spherical surface with high precision, which has the sealing effect of an eccentric ball valve. Under the working condition of temperature ≤425ºC, it has good sealing performance. Because of its compact overall structure and low cost, it is an ideal substitute for ball valve.             

2. With the three-dimensional eccentric structure, the butterfly plate is completely separated from the valve seat when it is opened by 10, so the friction is small and the service life is prolonged.  

3. Due to the eccentricity, the valve is labor-saving in operation, and is less affected by the fluctuation of medium pressure, so it has the self-sealing effect of closing more and more tightly.   The usual double eccentric butterfly valve is shown in the figure: Eccentricity 1 and Eccentricity 2 have about 25 stroke friction, and Triple Eccentricity adds a unique Eccentricity 3, which not only acts as a cam, but also reduces stroke friction and greatly prolongs the service life of the valve.
Adopted standards:





About US:
After more than 10 years of experience in the market, Zhejiang Huizheng Auto Control Valve Co., Ltd. has become a professional manufacturer focusing on researching, developing and solving the auto control valve, a crucial component of the industrial automatic system. Taking hold in Wenzhou and focusing on the national market, the company follows cutting-edge technologies of advanced manufacturers in the industry both at home and abroad and makes assiduously efforts to surpass and edge out the huge share of overseas brands in domestic control valve field. The company has a powerful team: 8 production technology senior valve engineers, 10 highly-educated pre-sales talents, 5 full-time after-sales, 5 matching logistics personnel and 25 production technicians. The company practices the strategy of paying equal attention to both hardware and software. With more than 3000m2 standard industrial plants currently, the company has excellent equipment including 3 large horizontal lathes, 2 NC processing centers, 5 NC lathes, 1 large shot-blasting machine, 2 high pressure test equipment with large diameter, 5 drilling machines and other matching equipment to meet production demands of various high, large, precise and cutting edge auto control valves. The company has obtained necessary TS certification in the software filed, ISO9001-2015 quality management system certification, 5 registered trademarks, 20-odd Patents for Utility Models, 5 patents of invention and others coming soon.

The company has three subsidiary production workshops: 1.Regulating valve workshop: it manufactures motorized, pneumatic, self-operated regulating valves; 2.Ball valve workshop: it manufactures V-type, cast steel floating, cast steel fixed, forged floating, forged fixed and eccentric hemispherical valves; 3.Actuator workshop: it manufactures AT pneumatic and RG series compact motorized actuators. The company is approved by customers in all industries due to its adherence to the business concept of two "Unique" (i.e. quality is the unique prerequisite of the company survival and market is the unique standard of the product inspection) and the service concept of "Worry about customer's concerns and anxious about customer's troubles". Setting up the brand image of the enterprise and creating excellent products for controlling the valve industry, the nitrogen valve and nitrogen valve micro pressure valve of the self regulating valve of our company is also leading the industry. The automatic control valves are widely used in power, metallurgy, petroleum, chemical, pharmaceutical, papermaking, water supply and drainage industries, and are well received by users.

In the new century, we will eagerly look forward to working with you to seek common development and further promote domestic industrial automation. Your satisfaction is our goal. It will win the praise of more and more users with excellent product quality and perfect service system. The people are greeting you with vigorous vigor and enthusiasm.