High temperature metal hard sealing Double-eccentric center butterfly valve
Pneumatic & Electric eccentric butterfly valve
1) ZSHWB/ZDRWB
Double offset butterfly valve (high performance butterfly valve) it uses peculiar eccentric structure both valve disc and sealing gasket, with characteristics of compact structure, good shut-off property and long life, and compatibility of regulating and shut-off functions, which is widely used to cut off or regulate the processing mediums such as tap water, sewage, oil, air, coal gas, natural gas and water vapor in the industries such as chemical engineering, electric power, light textile, food, pharmaceutics, paper manufacture and pipes of municipal engineering and water plants.
2) The PN grade is ANSI(class) 150 and 300 and the DN is about 2-48 inches under the temperature of -60celsius to 450celsius.
The sealing grade of the metal sealing type is IV and the soft sealing VI. There is zero leakage and the flow property is equal percent approximately.
Characteristics:
A. The valve body is made by weight impact structure, small cubage, forged and light.
B. The disc is installed double eccentrically. When it is closed, the valve disc expands for the best sealing effect. When it is open, the disc disengages from the gasket quickly to avoid the abrasion of the gasket.
C. The gasket is new-designed, simple-used and free of maintenance.
D. There are soft and metal sealing for selection to meet the different demands of the working situation.
E. The eccentric structure reduces the operating torque greatly.
F. Low flow resistance and high rated flow coefficient which is about 3 times of that of the single valve seat with the same diameter.
G. Strong self-cleaning ability and long service life.
H. Non-flange structure is used for the valve and wafer type installation is used for process pipes.
I. The standard actuator units (pneumatic plug type and electric) can be counterchanged.
Main Material
Valve body: WCB, CF8, CF3, CF8M, CF3M
Disc: CF8, CF3, CF8M, CF3M
Valve rod: 420, 304, 30L, 316, 316L, 630
Sealing gasket: Reinforced PTFE, 304, 630
Packing: Polytetrfluoroethylene, flexible graphite
Guiding sleeve: QA19-4, 304, composite
Yoke: WCB
Please contact us for more details if any interesting, thanks
Zhejiang Yongsheng Instrumentation Co., Ltd. is a professional shareholding enterprise. We specialize in the production of instrumentations of industrial automation - control valves.
Located beside the beautiful Fuchun river in the south of Hangzhou City, our company covers an area of over 30, 000 square meters and possesses more than 200 employees, including over 60 senior and medium-level technicians in various fields. Our main products include: Pneumatic diaphragm control valve, self-operated pressure control valves, linear-motion regulating valve series, rotary-motion regulating valve series, intelligent control valve series with more than 200 types and thousands of specifications. With annual output of control valves more than 20, 000 sets. In 2008 our company invested 30 million yuan found the Yongsheng fluid machinery Co., Ltd. With annual output of 5000 tons and start the processing line of new craft cast steel, stainless steel, cast iron which guarantee the valve quality at first manufacture process.
Our company adopts the scientific management, strictly according to the ISO9001: 2000 quality management system. We carry out the high-standard production relying on the solid technological power, advanced equipment, production technique and perfect means of test, and provide the systematic services based on the complete after-sales service system. In addition, we constantly produce high-quality products expected and required by the customers, for pursuing for existence in competition, benefits in quality, advancement in technology and promotion in management.
If you are interested in our products, please feel free to contact us for more information. We are looking forward to cooperating with you in the near future.
