Zhejiang Demelong Fluid Technology Co., Ltd.: Your Professional Eccentric Plug Valve Manufacturer!
Zhejiang Demelong Fluid Technology Co., Ltd. (DMLV) is a leading industrial valve Manufacturer headquartered in Wenzhou, China. We specialize in the design, development, and production of high‑performance plug valves and flow control solutions for diverse industries such as petrochemical, power generation, wastewater treatment, oil & gas, and industrial fluid systems.
Quality Control
We manage the entire production process, from raw material procurement to final inspection. Each valve undergoes rigorous quality inspection to ensure stable performance, durability, and compliance with international standards.
Customization Available
We support customization based on drawings or samples, meeting non-standard sizes, materials, and coating requirements to suit specific operating conditions.
Advanced Production Equipment
We possess advanced equipment including automatic internal and external cylindrical grinding CNC vertical lathes, CNC machine tools, valve grinding machines, and intelligent universal drive motors.
Wide Range of Applications
Our products are widely used in industries such as petroleum, chemical, natural gas, pharmaceutical, power, and construction.
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Pneumatic Actuated Eccentric Rotary Plug ValveProduct Introduction Pneumatic Actuated Eccentric Rotary Plug Valve is designed for large pipelines handling slurry or viscous fluids. It provides tight sealing and automated flow control, reducing -
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Electric Actuated Eccentric Plug ValveProduct Introduction Electric Actuated Eccentric Plug Valve is designed for large-diameter pipelines handling slurry or high-solid media. It solves leakage, high torque, and rapid seat wear issues, -
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API Elastic Seat Eccentric Plug ValveProduct Introduction API Elastic Seat Eccentric Plug Valve is designed for large-diameter pipelines and viscous or sediment-laden fluids. It ensures tight sealing, low operating effort, and reliable -
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Elastic Seat Eccentric Plug ValveProduct Introduction Elastic Seat Eccentric Plug Valve features an eccentric plug and elastic seat for tight shut-off. It prevents leakage and ensures smooth operation with viscous or abrasive -
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Elastic Seat Plug ValveOptimize Your Fluid Systems with the Elastic Seat Plug Valve For industries where fluid control is critical, the Elastic Seat Plug Valve offers a robust and efficient solution tailored to demanding
An Eccentric Plug Valve is a quarter-turn rotary valve designed for reliable isolation and throttling control in pipelines.
As a professional Eccentric Plug Valve Manufacturer, we supply valves for water treatment, petrochemical processing, power plants, pulp & paper, and industrial pipeline systems, providing stable flow control and long service life.
Features
Eccentric Motion Design
The plug follows an eccentric path during operation. Contact with the seat occurs only at the final closing stage, which reduces friction and extends sealing life.
Reliable Shut-Off Performance
When fully closed, the plug presses firmly against the seat to create a tight seal and prevent leakage.
Low Operating Torque
Minimal contact between plug and seat during rotation lowers operating torque and allows easy manual or automated operation.
Strong Flow Capacity
The streamlined flow path reduces pressure loss and allows stable flow control in large pipeline systems.
Raw Material Inspection
All valve body and internal components undergo chemical composition and mechanical property verification.
Machining Inspection
CNC machining ensures accurate plug geometry, shaft alignment, and sealing surface precision.
Assembly and Functional Test
Each valve is assembled by experienced technicians and tested for smooth rotation and sealing alignment.
Pressure and Leakage Test
Hydrostatic shell testing and seat leakage testing verify the valve’s pressure resistance and sealing performance.
Final Quality Inspection
Finished valves are checked for dimensions, coating quality, marking, and packaging before shipment.
Custom Eccentric Plug Valve
We provide flexible customization to meet project requirements.
Material Options
Available materials include ductile iron, carbon steel, stainless steel, and alloy steel for different corrosion and pressure conditions.
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Size and Pressure Range
Typical production range: DN50–DN900 (2″–36″) with pressure classes such as ANSI 150 or PN10–PN25.
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Connection Types
Flanged, mechanical joint, threaded, or welded ends can be supplied according to pipeline design.
03
Actuation Options
Manual lever, gear operator, pneumatic actuator, and electric actuator are available.
04
Special Engineering
Options include anti-corrosion coatings, rubber-lined plugs, and special trim materials for abrasive service.
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Certificate
FAQ
Find professional eccentric plug valve manufacturers and suppliers in China here! With abundant experience, we warmly welcome you to buy high quality eccentric plug valve made in China here from our factory. Customized orders are welcome.
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