Ductile Iron Wafer Butterfly Valve Description
Ductile iron wafer butterfly valve is an industrial valve with ductile iron valve body as the main body and ductile iron connection. It is specially used for cutting off or regulating the fluid medium in the pipeline. It has the characteristics of compact structure, strong corrosion resistance and reliable sealing. It is widely used in municipal, chemical, water treatment and other fields.
Basic definition
Core structure: It is composed of ductile iron valve body, butterfly plate (ductile iron chrome plating), valve stem (45# steel chrome plating) and soft sealing material (such as EPDM rubber). The butterfly plate is driven by the rotation of the valve stem to realize opening and closing.
Connection method: The two sides of the valve body are installed by ductile iron, which is directly clamped between the pipe flanges by bolts. No additional flange is required, which saves space and is easy to install.
Core features
High strength and corrosion resistance
The ductile iron material gives the valve body high mechanical strength and corrosion resistance. It is suitable for fresh water, sewage, weak acid and alkali and other media. The operating temperature range can reach -20℃~+120℃. Soft sealing performance
Use EPDM or PTFE valve seat to achieve bidirectional sealing, close to zero leakage under low pressure conditions.
Easy to operate
The butterfly plate is designed as a centerline structure, opening and closing only requires 90° rotation, the handle operation torque is low, and supports fast switching; it can be expanded to configure pneumatic or electric actuators for remote control.
Low flow resistance and long life
The full-bore design reduces the flow resistance of the medium, and the thickness of the butterfly plate is the only barrier to the flow channel, with low wear and low maintenance costs.
Ductile Iron Wafer Butterfly Valve Specification
|
Nominal Pressure |
PN6,PN10,PN16,PN25,PN40,Class150,Class300 |
|
Size |
DN50 to DN4000/2"-160" |
|
Drive |
Manual gearbox, Worm gear, Pneumatic, Hydraulic, Electric, etc |
|
Connection |
Flange, Welding, Wafer |
|
Temperature |
-29℃ to 225℃ |
|
Medium |
Air, Water, Sea Water, Sewage, Oil, Gas, etc |
Selection and configuration recommendations
Sealing material: Select EPDM (acid and alkali resistant), PTFE (high temperature resistant) or food-grade rubber according to the characteristics of the medium.
Drive mode: Manual (handle/turbine) is suitable for conventional scenarios; pneumatic/electric actuators meet the needs of automation control.
Pressure level: The nominal pressure covers 0.6MPa~1.6MPa, which needs to match the pressure requirements of the pipeline system.
GNEE Ductile Iron Wafer Butterfly Valve
Applications
Municipal engineering: flow regulation and cutoff of water supply and drainage systems and sewage treatment plants.
Industrial systems: pipeline media control in the fields of power, metallurgy, chemical industry, etc., especially suitable for working conditions containing particles or corrosive fluids.
Environmental protection engineering: gas flow regulation of ventilation and dust removal pipelines, such as dusty cold air or hot air environments.
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