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China Suppliers Factory Double Eccentric Hydraulic Control Butterfly Valve PN16 with EPDM Sealing
Valve Type: |
Eccentric butterfly valve |
Structure: |
Eccentric |
Standard: |
EN/DIN/API |
Workmanship: |
Investment casting |
Sealing direction: |
Single-directional |
Sealing grade: |
Zero leakage |
Temperature: |
-20°C < T < 120°C |
Operation: |
Handle/Lever |
Characteristics
Wafer type connection with minimal space occupation. The valve body does not have an independent flange and is directly clamped between two pipeline flanges using double headed bolts. Its axial length is only 1/2~1/3 of that of a flange butterfly valve, and its radial size is compact, reducing weight by 30%~60%. It is particularly suitable for narrow installation environments such as dense pipelines, equipment rooms, and underground pipelines, while reducing labor/equipment costs for handling and installation.
Advantages
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01Accurate Regulation and Stepless Flow Control The eccentric butterfly valve's hydraulic drive + adjustable stroke enables precise control of medium flow/pressure, stable throttling and stabilization, suitable for fine working conditions.
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02Waterproof Hammer and Slow Closing Protective Pipe Network The control box can set fast and slow closing, segmented closing, flexible opening and closing, eliminate water hammer impact, and protect pipelines, pumps, and equipment.
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03Small Opening and Closing Torque, Wear-Resistant and Durable Eccentric structure (conventional combination) opens and disengages immediately, with low friction on the sealing surface, resistance to cavitation and impurities, and long service life.
Packing
Standard export wooden case packaging
Application Scenarios
The adjusted hydraulic eccentric butterfly valves are widely used for working conditions with large caliber, medium high pressure, and the need to eliminate water hammer.
Frequently Asked Questions
Q
What is an eccentric butterfly valve and how does it differ from a standard butterfly valve?
An eccentric butterfly valve uses an offset disc design where the shaft is positioned away from the center of the disc and the pipe bore. This eccentric structure reduces friction between the disc and seat during opening and closing, resulting in lower operating torque, less wear, and a longer service life compared to a concentric (standard) butterfly valve.
Q
What temperature range is this eccentric butterfly valve suitable for?
This eccentric butterfly valve is designed to operate within a temperature range of -20°C to 120°C, making it suitable for a wide variety of industrial fluid control applications including water treatment, HVAC systems, and general pipeline use.
Q
What are the main advantages of the wafer-type connection?
The wafer-type connection allows the valve to be clamped directly between two pipeline flanges without an independent flange body. This significantly reduces the axial length (only 1/2 to 1/3 of a flanged butterfly valve), saves weight by 30%–60%, and is ideal for installations with limited space such as underground pipelines, equipment rooms, and dense pipe networks.
Q
How does this valve prevent water hammer in pipeline systems?
The hydraulic control box integrated with this eccentric butterfly valve supports configurable fast and slow closing sequences, segmented closing operations, and flexible open/close timing. These features effectively eliminate water hammer impact, protecting pipelines, pumps, and connected equipment from pressure surge damage.
Q
What standards does this eccentric butterfly valve comply with?
This eccentric butterfly valve is manufactured in compliance with EN, DIN, and API international standards, ensuring it meets global quality and performance benchmarks for industrial valve applications.
Q
What industries and applications is this valve best suited for?
This hydraulic eccentric butterfly valve is widely used in large-caliber, medium-to-high pressure pipeline systems where water hammer elimination is critical. Typical application scenarios include municipal water supply, drainage systems, power plants, pumping stations, fire protection systems, and industrial process pipelines.