WCB Casting Steel Triple-Eccentric Butterfly Valve with Hand Worm Gear

• Media: Water,Gas,Oil etc
• Driving Mode: Worm Gear
• Connection Form: Flange
• Model NO.: D343H
• Structure: Three-Eccentric Sealing
• Seal Form: Force Sealed
• Valve Stem: Normal
• Work Pressure: Mid-Pressure (2.5mpa< Pn <6.4mpa)
• Working Temperature: Medium Temperature (120°C<T<450°C)
• Material of Seal Surface: Metal Hard Sealed
• Valve Body: Casting
• Standard: ANSI DIN JIS GOST GB/T
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Size: 1/2"-80"
• Operation: Handwheel, Gear, Electric, Pneumatic
• MOQ: 1
• Transport Package: Wooden Case
• Trademark: SWF VALVE
• Origin: China
• HS Code: 8481804090

Product Description

 

Product Description

Introduction:

Sanwei's triple-eccentric butterfly valve features an advanced three-offset geometry that completely eliminates rubbing contact between sealing surfaces. The unique conical sealing design with a metal seat ensures zero leakage (Class VI per ANSI/FCI 70-2) while requiring 50% less operating torque than conventional designs.

Standard:

Structural formation	Single eccentric structure,Double eccentric structure,Three eccentric structure,Variable eccentric structure
Design reference	GB	API
Driving manner	Hand-operated,worm wheel&worm screw pneumatic operated,Electric-driving
Design standard	GB/T12238	API 609,MSS.SP-68
Face to face	GB/T 12221	ASME B16.10,API609,MSS.SP-68
Flanged ends	JB/T 79,JB/T 82,GB/T9115	ASME B16.5,ASME B16.47
Test&inspection	JB/T 9092	API598

Application:

Butterfly valves are suitable for flow regulation. Due to the large pressure loss of the butterfly valve in the pipeline, the firmness of the butterfly plate to withstand the pressure of the pipeline medium when closed should also be considered. In addition, the limitations of the operating temperature to which the elastomeric seat material can be subjected at high temperatures must also be taken into account. The structural length and overall height of the butterfly valve are small, the opening and closing speed is fast, and it has good fluid control characteristics, and the structural principle of the butterfly valve is most suitable for making large-diameter valves. When a butterfly valve is required to be used to control the flow rate, it is important to select the correct size and type of butterfly valve so that it can work properly and effectively.

In general, in throttling, regulation control and slurry media, short structural length and fast opening and closing speed (1/4 revolution) are required. Low pressure cut-off (small pressure difference), butterfly valve is recommended.

Butterfly valves can be used when there is a small amount of leakage into the atmosphere and abrasive medium in the case of double-position adjustment, necked ground channel, low noise, cavitation and gasification, a small amount of leakage to the atmosphere, and abrasive medium.

When the butterfly valve is used under special working conditions, such as throttling adjustment, or strict sealing, or severe wear, low temperature (cryogenic) and other working conditions, it is necessary to use a special butterfly valve with metal seal with adjustment device.

Butterfly valves are suitable for fresh water, sewage, seawater, salt water, steam, natural gas, food, medicine, oil and various acids and alkalis and other pipelines that require complete sealing, zero gas test leakage, high life requirements, and working temperature of -10 degrees ~ 150 degrees.

The soft-seal eccentric butterfly valve is suitable for two-way opening and closing and adjustment of ventilation and dust removal pipelines, and is widely used in gas pipelines and waterways in metallurgy, light industry, electric power, and petrochemical systems.

Metal-to-metal wire sealed double eccentric butterfly valve is suitable for urban heating, gas supply, water supply and other gas, oil, acid and alkali pipelines, as a regulating and throttling device.

In addition to being used as a program control valve for large-scale pressure swing adsorption (PSA) gas separation devices, metal-to-metal sealed triple eccentric butterfly valves can also be widely used in petroleum, petrochemical, chemical, metallurgy, electric power and other fields, and are a good alternative to gate valves and globe valves.

 

Product Parameters

Parameter

Size	DN15 - DN2000 (1/2″ - 80″)
Pressure	PN10 - PN25 (Class 150 - Class 300)
Temperature	-40°C to +200°C
Material	Carbon Steel, Stainless Steel, Alloy Steel, etc.
Media	Water, Oil, Gas, Steam, Corrosive Media, etc.
Operation	Handwheel, Gear, Electric, Pneumatic

Detailed Photos