Hot Products
0102030405
China Double Eccentric Hydraulic Control Butterfly Valve PN16 EPDM Sealing - Reliable Suppliers & Factory
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
-
Accurate 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.
-
Waterproof 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.
-
Small 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 the main difference between an eccentric butterfly valve and a standard butterfly valve?
An eccentric butterfly valve uses an offset shaft design that causes the disc to disengage from the seat immediately upon opening, significantly reducing friction on the sealing surface. This results in lower operating torque, longer service life, and better sealing performance compared to a concentric (standard) butterfly valve.
Q
What temperature range is this eccentric butterfly valve suitable for?
This eccentric butterfly valve is rated for operating temperatures between -20°C and 120°C, making it suitable for a wide range of industrial fluid control applications including water supply, HVAC, and general process piping.
Q
How does the wafer-type connection benefit installation?
The wafer-type connection eliminates the need for an independent flange on the valve body. The valve is clamped directly between two pipeline flanges using double-headed bolts, reducing axial length to just 1/2–1/3 of a flanged butterfly valve and cutting weight by 30%–60%. This makes it ideal for tight spaces such as equipment rooms, dense pipeline systems, and underground installations.
Q
How does the hydraulic eccentric butterfly valve prevent water hammer?
The valve's hydraulic control box supports programmable fast and slow closing sequences, segmented closing, and flexible opening/closing operations. These features allow the system to gradually reduce flow velocity and prevent sudden pressure surges (water hammer), protecting pipelines, pumps, and connected equipment from 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 compatibility with global pipeline systems and meeting the quality and safety requirements of major industrial markets worldwide.
Q
What are the typical application scenarios for this valve?
This hydraulic eccentric butterfly valve is widely used in large-caliber, medium-to-high pressure pipeline systems where water hammer elimination is critical. Typical applications include municipal water supply networks, pumping stations, industrial process pipelines, fire protection systems, and large-scale HVAC installations.