Double Eccentric Butterfly Valve
  • Air ProDouble Eccentric Butterfly Valve
  • Air ProDouble Eccentric Butterfly Valve
  • Air ProDouble Eccentric Butterfly Valve
  • Air ProDouble Eccentric Butterfly Valve

Double Eccentric Butterfly Valve

Double eccentric butterfly valve is also called high performance butterfly valve, which is mainly used in water plant, power plant, steel smelting, chemical industry, water source engineering, environmental facilities construction and other systems for drainage, especially for waterway pipeline, as a regulating and intercepting device.

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Product Description

Double Eccentric Butterfly Valve

 

Double eccentric butterfly valve is also called high performance butterfly valve, which is mainly used in water plant, power plant, steel smelting, chemical industry, water source engineering, environmental facilities construction and other systems for drainage, especially for waterway pipeline, as a regulating and intercepting device. Compared with midline butterfly valve, double eccentric butterfly valve is more resistant to high pressure, longer life and good stability. Compared with other valves, the larger the diameter, the lighter the material, the lower the cost. However, because of the butterfly plate in the middle, the flow resistance is large, so the butterfly valve smaller than DN200 is not very meaningful.

Double eccentric butterfly valve is further improved on the basis of single eccentric butterfly valve. Its structure is characterized by the fact that the stem axis is both off the center of the butterfly plate and off the center of the body. The effect of double eccentricity makes the butterfly plate quickly detach from the valve seat after the valve is opened, which greatly eliminates the unnecessary excessive extrusion and scraping between the butterfly plate and the valve seat, reduces the opening resistance, reduces wear, and improves the life of the valve seat. The substantial reduction of scraping also makes it possible to use metal seats for double eccentric butterfly valves, which improves the application of butterfly valves in high temperature fields.

 

Zhejiang Huachi Co., Ltd is a high-tech enterprise integrating valve production, R&D and sales. The main products are butterfly valve series, gate valve series, half ball valve series and so on. The company covers an area of about 30,000 square meters, with a total investment of 150 million RMB. The company has built two new comprehensive workshops, as well as supporting warehouses and technical research and development centers. The workshops are equipped with perfect production processing and testing equipment, as well as dozens of professional and technical personnel, which can complete the production of high-quality, high-quality products with high efficiency.

  

Type

Butterfly valve

Modle

 

Nominal diameter

DN50~DN4500  2inch~180inch

Nominal pressure

0.25Mpa,0.6Mpa,1.0Mpa,1.6Mpa,2.5Mpa,4.0Mpa,150LB,300LB,

Power

Handle,Turbine box,Pneumatic actuator,Ecectric actuator,Hydraulic actuator,Bare shaft

Design

API609 / AWWA-C504 / BS EN593 / GB/T12238

Face to face

API609 / ASME B16.10 / BS EN558 / GB/T12221

Flange end

ASME B16.42 / ASME B16.47 / BS EN1092-2 / GB/T9113/GB/T9115 / GB/T 17241.6

Pressure test

API598 / BS EN12266 / GB/T 13927

Transport

By sea

 



 

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