Pneumatic Triple-Eccentric Full Metal Seated Butterfly Valve

• Media: Water,Gas,Oil etc
• Driving Mode: Worm Gear
• Connection Form: Flange
• Model NO.: D643H
• Structure: Double-Eccentric Sealing
• Seal Form: Force Sealed
• Valve Stem: Normal
• Work Pressure: Pn6 – Pn25 (Class 150 – Class 300)
• Working Temperature: -40ºC~+200ºC
• 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
• Customized: OEM
• Transport Package: Wooden Case
• Trademark: SWF VALVE
• Origin: China
• HS Code: 8481804090

Product Description

 

Product Description

Introduction:

The D643H/D673H Pneumatic Bi-directional Pressure Full Metal Hard Seal Butterfly Valve is composed of an imported pneumatic piston actuator and a three-dimensional eccentric hard-seal butterfly valve, commonly known as the pneumatic three-eccentric metal-seal butterfly valve.
 

The D643H/D673H Pneumatic Bi-directional Pressure Full Metal Hard Seal Butterfly Valve consists of an imported pneumatic piston actuator and a three-dimensional eccentric hard-seal butterfly valve, commonly known as the pneumatic three-eccentric metal-seal butterfly valve. The valve seat adopts a multi-level structure compatible with hard seals, featuring exquisite processing and advanced technology.

This pneumatic bi-directional pressure full metal hard seal butterfly valve is paired with an electrical valve positioner, allowing for operation control by inputting a 420mA DC signal and a 0.40.7 MPa air source. It enables control of parameters such as pressure, flow, temperature, and valve position. The valve is equipped with stroke limit switches, solenoid valves, pressure regulators, and a 0.4~0.7 MPa air source for switch operation, and provides two sets of dry contact signals to indicate the valve's open/close status.

The pneumatic bi-directional pressure full metal hard seal butterfly valve consists of the valve body, butterfly plate, multi-level valve seat, valve stem, transmission mechanism, and other main components. It is characterized by a simple structure, compact size, and light weight. Therefore, the pneumatic bi-directional pressure full metal hard seal butterfly valve, also known as the pneumatic three-eccentric metal-seal butterfly valve, is widely used in pipelines handling corrosive media in industries such as metallurgy, power, petroleum, chemicals, air, gas, flammable gases, and water supply and drainage systems.

Product Advantages:

• The pneumatic bi-directional pressure full metal hard seal butterfly valve adopts a three-eccentric sealing structure, ensuring that the valve seat and butterfly plate experience minimal wear, with a sealing function that becomes tighter as it closes.

• The sealing ring is made of stainless steel, offering the dual benefits of metal hard sealing and elastic sealing. It provides excellent sealing performance under both low and high temperatures, with features such as corrosion resistance and a long service life.
• The sealing surface of the butterfly plate is clad with cobalt-based hard alloy, which is wear-resistant and ensures a long service life.
• The large-sized butterfly plate adopts a trunnion structure, offering high strength, large flow area, and low flow resistance.
• The pneumatic bi-directional pressure full metal hard seal butterfly valve has a bi-directional sealing function. It can be installed without regard to the direction of the media flow or spatial orientation, making it suitable for installation in any direction.
• The pneumatic actuator can be installed in multiple positions (rotating 90° or 180°), making it convenient for users.

Product Parameters

Parameter

Size	DN15 - DN2000 (1/2″ - 80″)
Pressure	PN6 - PN25 (Class 150 - Class 300)
Temperature	-40°C to +200°C
Material	Carbon Steel, Stainless Steel, Cast Iron, etc.
Media	Water, Steam, Oil, Gas, Corrosive Media, etc.
Operation	Handle, Gear, Electric, Pneumatic

 

Detailed Photos