API Cast Steel Pneumatic Butterfly Valve (D645H-PN25-800)
Product Details
Basic Info.
Model NO.: D645H-PN25-800Work Pressure: Mid-Pressure (2.5mpa< Pn <6.4mpa)Material of Seal Surface: Metal Hard SealedConnection Form: FlangeStructure: Three-Eccentric SealingSeal Form: Force SealedWorking Temperature: Medium Temperature (120° CApplication: Industrial Usage, Water Industrial UsageExport Markets: GlobalProduct Description
Standards
Design and Manufacture: API 609, MSS SP-67, MSS SP-68
Inspection and Test: API 598
End flange dimension: ASME B16.5(NPS≤ 24), ASME B16.47 B
BW end dimension: ASME B16.25
Face to face and end to end: API 609
Pressure-temperature ratings: ASME B16.34
Trait and purpose
Hard Seal Butterfly Valve triple offset series are our company's leading products,
Which are used in such fields as metallurgy, light industry, electric power, petrochemistry,
Coal gas channel etc.
The Seal principle of hard Seal Butterfly Valve triple offset
The Triple Offset Butterfly Valve Provides a bi-directional bubbletight shut-off.
This geometry ensures that the disc seal contacts the body seat only at the final shut-off
Position without rubbing or galling, providing atorque generated resilient seal with sufficient
"wedging" to ensure auniform seal contact.
China zhongya valve Co., Ltd. is a collection research and development, manufacturing, sales and integrated high-tech enterprises. The company is located in NO. 3511 Yongqiang Avenue Longwan District Wenzhou city Zhejiang China...The company introduces advanced technology from abroad, the modern scale production, and equips Germany processing center, Taiwan CNC machine, super precision vertical lathe, automatic painting line and special equipment, machining center, CNC machine tools, special molding, slinging cleaning, passivation treatment, ultrasonic cleaning equipment and a variety of valve pressure testing equipments. As well as equipped with photoelectric direct reading analyzer, thickness tester, radiographic, ultrasonic and liquid penetrant ect, non-destructive testing equipment to ensure that the company's products can be manufactured strictly in accordance with clients'requirements of related standard, to meet the different demands of them.
The company mainly in producing gate valve, globe valve, ball valve, check valve, butterfly valve, hydraulic control valve, supply and drainage water equipment and a variety of special non-standard special valves.
The company implements API (USA) and EN (European Union), ISO (international organization for standardization), BS (British), JIS (Japan) and GB (China) and other major advanced industrial countries and the latest standards of the national standard designing production. Valve body materials are used of carbon steel, alloy steel, chrome molybdenum steel, stainless steel, low-temperature steel, high-temperature steel, nickel base and cobalt base alloy and other materials, and materials specified by the user. Products are widely used in petroleum, chemical, natural gas, coal chemical industry, electric power, shipbuilding, pharmaceutical, paper making, beer industry, food, building, water supply, prevent pollution, and a large number of them are exported to the United States, Europe, Russia, Middle East, Japan, South Korea and southeast Asia and other regions.
