China Butterfly Valve Factory
Industrial Butterfly Valves for Global Projects
China-based manufacturer supplying industrial butterfly valves for global projects, with in-house production and custom engineering support.
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DN50-DN1200 | PN10-PN40 / Class 150-300 Covering standard and large-bore industrial applications
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Ductile Iron, WCB, Stainless Steel Seat options: EPDM, PTFE, Metal Seat
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OEM & Project-based Customization Different standards, materials and working conditions
Used in water treatment, oil & gas, chemical processing, HVAC and marine systems.
Fast response within 12-24 hours · Samples available for evaluation
What's On This Page
Jump to the section that matters most to your sourcing or technical questions.
Your Direct Butterfly Valve Manufacturer in China
In-house Machining, Assembly & Testing Under One Roof
You work directly with a factory that controls machining, assembly and testing in-house. No middlemen, no unnecessary markup, no communication gaps between you and the production floor.
Whether you need standard butterfly valves or project-specific configurations, you get stable production, clear specifications and faster turnaround from a team that understands export documentation and international standards.
Integrated
Machine · Assemble · Test
What You Can Expect
Working directly with a manufacturer means fewer variables and more control over your supply chain.
Direct Factory Supply
Clearer communication and better cost control. No trading company sitting between you and production.
In-house Production
Machining, assembly and testing handled under one integrated system for full traceability.
Consistent Quality
Same process and standards applied to every batch, every shipment. No surprises on arrival.
Flexible Production
Support for standard models and custom project requirements across different standards and conditions.
Inside Our Factory
A look at our production facility, equipment and quality control processes.
Whether you are sourcing for distribution, EPC projects or end-user applications, you receive valves built to your specifications, with the documentation and support required for your market.
Our Butterfly Valve Products
Select the right butterfly valve type based on your application, pressure rating and sealing requirements. Standard models and custom solutions are both available.
Double Eccentric Butterfly Valve
For medium to high pressure systems where lower torque and longer service life are required.
Rubber Lined Butterfly Valve
Used in water treatment and general industrial applications requiring reliable sealing and corrosion resistance.
Butterfly Valve With Bypass
Designed for large diameter pipelines to balance pressure during operation and protect sealing performance.
AWWA C504 Butterfly Valve
Built to AWWA standards for municipal water systems, ensuring durability and compliance with project specifications.
Concentric Butterfly Valve
Cost-effective solution for low pressure applications such as HVAC, water supply and general flow control.
Your Specs, Our Production
Custom Butterfly Valve
Built based on your drawings or project requirements, including special materials, dimensions and standards.
Not sure which type fits your project? Chat with us on WhatsApp — share your working conditions and we'll recommend the right model.
Applications
Butterfly valves are selected based on working conditions, pressure, media and industry standards. Below are typical applications where different valve types are commonly used.
Water Treatment
Used for water supply, wastewater treatment and desalination systems. Rubber lined and AWWA standard butterfly valves are commonly applied for corrosion resistance and long service life.
Municipal Water Systems
Designed for city water distribution networks, where AWWA C504 butterfly valves are required to meet project specifications and ensure reliable operation.
HVAC Systems
Applied in chilled water and cooling systems, where concentric butterfly valves provide cost-effective flow control for low pressure applications.
Oil & Gas
Used in pipelines and processing systems requiring higher pressure resistance. Double eccentric and metal seated designs help improve sealing performance and durability.
Chemical Processing
Suitable for handling corrosive media, where PTFE or rubber lined butterfly valves are used to protect internal components and maintain sealing performance.
Power & Industrial Plants
Applied in large diameter pipelines and industrial systems, where butterfly valves with bypass are used to balance pressure and ensure stable operation.
How Your Valves Are Manufactured
We machine key components in-house, assemble each valve step by step, and test every unit before shipment — so you don't have to deal with fitting problems, leakage or rework on site.
All production steps are handled within one system to keep your order consistent, especially for repeat orders and project supply.
Machining
Valve bodies and discs are machined on CNC equipment with dimensional checks built into the process — so the valves you receive fit correctly without field adjustment.
What this means for you: no misfit flanges, no rework, no delays on your installation schedule.
Assembly
Each valve is assembled following fixed procedures with key checkpoints during installation — stem alignment, seat positioning, and torque values are all verified before moving forward.
What this means for you: no misalignment, no hard operation, no inconsistency between units in the same batch.
Testing
Every valve is pressure tested and inspected for leakage before leaving the factory. Test reports are generated per batch and can be included with your shipment documentation.
What this means for you: no returns, no on-site repair, no risk passed to your customer or end user.
Coating & Packing
Valves are coated for corrosion protection based on application requirements, then packed with proper bracing and protection for long-distance ocean freight and overland transport.
What this means for you: no rust on arrival, no handling damage, no need to re-paint or re-pack before delivery to your customer.
Quality Control You Can Verify
We check materials, dimensions and sealing performance at different stages of production, so you don't have to deal with material issues, leakage or inconsistent quality.
Each valve goes through a series of inspections before shipment to make sure it meets your specifications and project requirements.
Raw Material Verification
Raw materials are verified before production to ensure correct chemical composition and material grade, preventing material-related failures down the line.
Mechanical Property Testing
Mechanical tests confirm that materials meet required strength and impact resistance under actual working conditions, so components won't fail under pressure.
Casting & Internal Inspection
Key components are inspected for internal defects such as cracks and porosity, avoiding failure risks during operation that are invisible from the outside.
Machining & Dimensional Check
Dimensions are checked during and after machining to ensure proper fit and alignment, so you don't have to deal with mismatch or rework during installation.
Surface & Coating Inspection
Coating thickness and adhesion are inspected to ensure long-term corrosion protection, especially for valves exposed to water, chemicals or outdoor environments.
Pressure & Sealing Test
Every valve is pressure tested and checked for forward and reverse sealing performance before shipment, reducing the risk of leakage or failure on site.
Technical Specifications
Key specifications of our butterfly valves are listed below for quick reference. Detailed drawings and datasheets can be provided based on your project requirements.
| Item | Specification |
|---|---|
| Valve Type | Concentric / Double Eccentric / AWWA / Custom |
| Size Range | DN50 – DN1200 (2" – 48") |
| Pressure Rating | PN10 / PN16 / PN25 / PN40 / Class 150 / 300 |
| Design Standard | API 609 / EN 593 / AWWA C504 |
| Face to Face | EN 558 / API 609 |
| Connection Type | Wafer / Lug / Flanged |
| Flange Standard | ANSI B16.5 / DIN / EN / JIS |
| Body Material | Ductile Iron / WCB / Stainless Steel |
| Disc Material | DI / WCB / SS304 / SS316 / Aluminum Bronze |
| Seat Material | EPDM / NBR / PTFE / Metal Seat |
| Stem Material | SS410 / SS420 / SS431 |
| Operation | Lever / Gear / Pneumatic / Electric |
| Temperature Range | -10°C to 200°C (depending on seat material) |
| Testing Standard | API 598 / EN 12266 |
| Leakage Standard | ISO 5208 Rate A / Zero Leakage (soft seat) |
Specifications above cover our standard product range. Custom configurations are available upon request.
Need a specification not listed above? We support custom configurations including special materials, non-standard dimensions, alternative flange standards and project-specific requirements. Send us your datasheet or drawing and we'll confirm feasibility.
Project References
Our butterfly valves have been supplied to water treatment, municipal and industrial projects in different markets. Below are selected applications for reference.
