China Butterfly Valve Manufacturers, Suppliers and Factory - Wholesale Butterfly Valve

Butterfly Valve Manufacturer & Industrial Flow Control Solutions

Zhengmao is a professional butterfly valve manufacturer and industrial valve supplier, providing reliable flow control solutions for water treatment, HVAC, fire protection, oil & gas, chemical processing, marine engineering, power generation, mining, and industrial pipeline systems worldwide.

Bidirectional Pressure All-metal Seal Butterfly Valve
Bidirectional Pressure All-Metal Seal Butterfly Valve is designed for bidirectional shut-off and flow control in industrial pipeline systems.. Bidirectional pressure sealing structure, allowing the
view more
Wafer Type Multi-lager Hard-seal Butterfly Valve
Wafer Type Multi-Layer Hard Seal Butterfly Valve is a metal-seated butterfly valve for shut-off and flow control in industrial piping systems.. Multi-layer laminated sealing ring, with metal and
view more
API Triple Lug Wafer Butterfly Valve
API Triple Lug Wafer Butterfly Valve is a triple-offset metal-seated butterfly valve designed for high-temperature, high-pressure, and critical shut-off applications in industrial pipeline systems..
view more
GB Triple Offset Flanged Butterfly Valve
The GB Standard Triple Offset Flanged Butterfly Valve is a quarter-turn rotary valve engineered for bi-directional, zero-leakage isolation in high-pressure and extreme-temperature piping systems.
view more
API Triple Offset Flanged Butterfly Valve
The API Triple Offset Flanged Butterfly Valve is a quarter-turn industrial valve designed to start, stop, and regulate flow in high-pressure and high-temperature pipeline systems.
view more
Weld Butterfly Valve
Welded butterfly valves are industrial shut-off valves with welded end connections, suitable for opening and closing media and flow control in pipeline systems.
view more
Insulated Butterfly Valve
Our insulated butterfly valve is made for district heating, cooling, HVAC, and industrial fluid control. It delivers tight shutoff while maintaining thermal efficiency across the pipeline..
view more
GB Standard Butterfly Valve
GB Standard Butterfly Valve is designed for flow regulation and shut-off in industrial pipeline systems in accordance with GB/T 12238 standard requirements. It is ideal for international contractors,
view more
ANSI Butterfly Valve
ANSI Butterfly Valve is designed for reliable on/off and throttling service in industrial piping systems where space-saving structure and stable flow control are required. The valve is manufactured
view more
Low-temperature Butterfly Valve
Our Low-temperature Butterfly Valve is engineered for high-integrity sealing in ultra-low temperature applications down to -196°C. Featuring an optimized extended bonnet design, it keeps the gland
view more
Electric Butterfly Valve
Electric Butterfly Valve is used for flow regulation and shut-off in industrial pipeline systems. It combines a butterfly valve body with an electric actuator for remote or automated operation in
view more
Wafer-type Butterfly Valve
Our Wafer-type Butterfly Valve is engineered for reliable bidirectional shut-off and precise throttling across a multitude of industrial operations, including water supply systems, HVAC, chemical
view more

First 12 Last

Technical Specifications

Category	Technical Details
Design Types	Wafer, Lug, Double Offset, Triple Offset
Size Range	2” – 48” (DN50 – DN1200)
Pressure Class	PN10–PN25 / Class 150–300
Materials	Cast Iron, Stainless Steel, Carbon Steel, Alloys
Sealing	Soft Seat (EPDM/PTFE) / Metal Seat
Actuation	Manual, Gear, Electric, Pneumatic
Temperature	Up to 450°C (Metal Seated Design)
Compliance	API, ISO, CE Standards

Butterfly Valve Types

We offer a comprehensive range of butterfly valves to suit various industrial applications:

Wafer Butterfly Valve：Compact, lightweight, installed between flanges. Used for water supply, HVAC, and general industrial applications where space and cost efficiency are key.

Lug Butterfly Valve：Threaded inserts allow downstream pipe removal without upstream shutdown. Ideal for maintenance-heavy systems, chemical plants, and flexible pipeline operations.

Double Flanged Butterfly Valve：Provides stable installation. Commonly used in large water transmission, municipal infrastructure, wastewater treatment, and pumping stations.

High Performance Butterfly Valve：Advanced sealing and premium materials offer improved pressure resistance, low leakage, and long service life under demanding industrial conditions.

Triple Offset Butterfly Valve：Metal-to-metal sealing design. Suitable for high-temperature, high-pressure applications — petrochemical, power generation, and refineries.

Pneumatic Butterfly Valve：Compressed air actuation for rapid automatic operation. Used in industrial automation, chemical lines, and continuous processes.

Electric Butterfly Valve：Electric actuators enable precise remote flow control. Applied in intelligent buildings, water treatment automation, and industrial control systems.

Features & Benefits

Excellent Sealing Performance

Quality elastomer or metal seals provide reliable bidirectional sealing — minimizing leakage and ensuring pipeline safety.

Low Operating Torque

Optimized disc profiles reduce torque, making manual operation easier and extending actuator service life.

Compact & Lightweight

Compared to gate or globe valves, butterfly valves require less space and reduce pipeline weight — lowering transport and installation costs.

Wide Material Selection

Bodies, discs, stems, and seals can be selected based on media, temperature, and corrosion requirements — offering flexible solutions for diverse industries.

Corrosion Resistance

Available in ductile iron, carbon steel, stainless steel, and alloys with protective coatings — ensuring excellent corrosion resistance in harsh environments.

Long Service Life

Precision machining, optimized seals, and strict manufacturing standards deliver long-term reliability with minimal maintenance.

Flexible Automation Options

Manual lever, gearbox, pneumatic, and electric actuators available — supporting manual to fully automated systems.

International Standards Compliance

Manufactured to globally recognized standards for easy installation in projects worldwide.

Application Industries

Butterfly valves are one of the most versatile flow control products and are suitable for numerous industrial applications requiring reliable shut-off and flow regulation.

Industry / System	Typical Applications
Water Supply & Distribution	Municipal networks, pumping stations, reservoirs, transmission pipelines
Wastewater Treatment	Sewage plants, sludge handling, reclaimed water, industrial wastewater
HVAC Systems	Chilled water, cooling water, heating, commercial building mechanical
Fire Protection	Sprinkler systems, fire pumps, fire isolation pipelines
Oil & Gas	Crude oil, fuel systems, natural gas distribution, auxiliary lines
Chemical Processing	Acids, alkalis, solvents, corrosive fluids, industrial process lines
Marine Engineering	Shipbuilding, offshore platforms, ballast, cooling, marine piping
Mining	Slurry, mineral processing, tailings, industrial water systems
Power Generation	Cooling water circulation, boiler auxiliaries, utility pipelines
Food & Beverage	Hygienic processing with food-grade valve options

Manufacturing Process

Every butterfly valve is produced through a standardized manufacturing process designed to ensure dimensional accuracy, sealing reliability, and long-term durability.

Raw Material Inspection: Chemical, mechanical, and dimensional checks before production.

Precision Casting or Forging: Controlled casting/forging ensures structural integrity.

CNC Precision Machining: Critical surfaces and bores are machined to high accuracy.

Component Assembly: Valve body, disc, stem, seat, bearings, and actuator interfaces are assembled per SOP.

Pressure & Leakage Testing: Each valve undergoes hydrostatic shell, seat leakage, and operational tests.

Surface Treatment: Epoxy coating or anti-corrosion treatment as per project requirements.

Final Inspection & Packaging: Inspected, cleaned, marked, packed, and ready for shipment.

Quality Control

At Zhengmao, quality is built into every production stage — from raw materials to final shipment. Our system combines advanced inspection equipment, standardized procedures, and experienced engineers to ensure each valve meets international standards and customer specifications.

01/

Incoming Raw Material Inspection
Every batch of castings, forgings, steel, rubber seats, shafts, and fasteners is verified for:
Material certificates, chemical composition, mechanical properties
Casting appearance, dimensions, surface defects

02/

Precision Machining Inspection
During CNC machining, we check:
Body dimensions, disc geometry, stem diameter
Shaft concentricity, flange drilling, surface roughness
Sealing surface precision and tolerances

03/

Assembly Process Control
Experienced technicians assemble each valve per standard work instructions, verifying:
Disc alignment, stem position, seat installation
Fastener torque, bearing installation, actuator interface
Operational smoothness — manual operation tested before pressure testing

04/

Pressure & Leakage Testing
Every valve undergoes functional testing to verify sealing and structural integrity:
Hydrostatic shell pressure test, seat leakage test
Low-pressure air test, torque test
Opening/closing cycle test and visual inspection

05/

Surface Protection Inspection
Coatings are inspected for:
Thickness, adhesion, surface finish
Color consistency, corrosion resistance

06/

Final Inspection & Traceability
Before shipment, each valve is checked for:
Product ID, size, pressure rating, material
Painting quality, packaging integrity, quantity, export marking

Engineering & Factory Capability

Zhengmao combines modern equipment, experienced engineering, and standardized management to deliver reliable butterfly valve solutions — from standard products to custom projects.

Modern Production Facilities: Our factory is equipped with CNC machining centers, vertical/horizontal lathes, precision drilling, automatic welding, assembly lines, coating lines, and pressure testing equipment — ensuring high accuracy, consistency, and efficiency.

Professional Engineering Team: Engineers continuously optimize design, materials, and processes. Support includes product design, material selection, structural analysis, custom development, drawing confirmation, technical docs, and OEM engineering.

Stable Supply Chain: Long-term cooperation with qualified suppliers ensures consistent availability of castings, stainless steel, rubber seats, fasteners, bearings, pneumatic/electric actuators, and coating materials — minimizing production interruptions.

Production Planning: Efficient scheduling supports small custom orders to large procurement projects. Advantages include flexible planning, fast samples, batch management, inventory coordination, order tracking, and on-time delivery. Customers receive regular production updates.

Professional Engineering Support Throughout Your Project

Selecting the right butterfly valve involves more than size — media, pressure, temperature, layout, and automation all affect performance. Our technical team provides practical support before, during, and after purchase.

Valve Selection Assistance: We help choose the right valve based on pipe diameter, pressure, temperature, flow characteristics, installation space, manual/auto operation, media type, and required service life — improving efficiency and reducing maintenance.

Material Recommendation: Our engineers recommend suitable body, disc, stem, seat materials, coating systems, and corrosion protection — based on actual operating conditions, not just standard configurations.

Automation Solutions: We assist with actuator selection: manual lever, worm gear, pneumatic/electric actuators, position indicators, limit switches, solenoid valves, and intelligent control systems — tailored to your operating frequency and automation needs.

Customized Engineering Solutions: We support non-standard configurations: special face-to-face dimensions, custom flange standards, high temperature, abrasive/corrosive media, marine, and underground installations — improving compatibility with complex systems.

Technical Documentation: We provide datasheets, GA drawings, dimensional drawings, material lists, installation/operation/maintenance manuals, and test reports — simplifying engineering review, procurement, installation, and long-term maintenance.

After-Sales Technical Support: Ongoing support includes installation guidance, operation assistance, maintenance recommendations, spare parts, technical consultation, and replacement advice — building long-term partnerships through reliable products and responsive service throughout the product lifecycle.

Customer Challenges & Our Solutions

Customer Challenges	Zhengmao Solutions
Inconsistent product quality	Standardized manufacturing procedures and strict quality management throughout every production stage
Difficult valve selection	Professional engineering recommendations based on operating conditions, media, pressure, and temperature
Long production lead times	Flexible production scheduling, efficient manufacturing management, and stable supply chain
Limited customization capability	OEM & ODM manufacturing, custom materials, sizes, pressure ratings, and actuator configurations
Complex international standards	Products manufactured according to ANSI, DIN, BS, JIS, API, and other applicable standards
Complicated export procedures	Complete export documentation and experienced international logistics support
Lack of technical support	Professional engineering consultation before, during, and after delivery
Need for reliable long-term supplier	Continuous product improvement, responsive communication, and dependable manufacturing capability

Packaging & Global Logistics

We offer multiple packaging solutions, including:

• Protective Plastic Wrapping

• Moisture-Proof Packaging

• Rust Prevention Treatment

• Bubble Protection

• Carton Packaging

• Wooden Cases

• Plywood Export Cases

• Wooden Crates

• Export Pallets

Available transportation methods include:
• Full Container Load (FCL)
• Less than Container Load (LCL)
• Sea Freight
• Air Freight
• Railway Transportation
• Multimodal Transportation

Supporting Industrial Projects Worldwide

Zhengmao supplies butterfly valves to customers across a wide range of international markets, serving distributors, engineering contractors, industrial manufacturers, wholesalers, EPC companies, and infrastructure developers.

Markets We Serve:
• Europe
• North America
• South America
• Southeast Asia
• Middle East
• Africa
• Oceania
• Central Asia

Certifications & Compliance

Our butterfly valves can be manufactured according to various international standards, including:

ANSI

API

DIN

JIS

ISO

2026042910190411c8f

FAQ

Q: What is a butterfly valve?

A: A butterfly valve is a quarter-turn flow control valve designed to regulate or isolate the flow of liquids, gases, and slurries in pipeline systems. It operates by rotating a circular disc mounted on a central shaft. Butterfly valves are widely used because of their compact design, lightweight construction, low operating torque, and cost-effective performance.

Q: What are the advantages of butterfly valves compared with gate valves?

A: Butterfly valves are generally lighter, more compact, and easier to install than gate valves. They require less installation space, offer faster opening and closing, reduce operating torque, and are typically more economical for medium and large-diameter pipelines. They are also easier to automate with pneumatic or electric actuators.

Q: Can butterfly valves be used for high-temperature applications?

A: Yes.For high-temperature services, we recommend selecting appropriate body materials, metal sealing structures, and high-temperature seat materials. Triple offset butterfly valves are commonly used for demanding temperature conditions.

Q: Can butterfly valves handle corrosive media?

A: Yes.By selecting suitable materials such as stainless steel, PTFE seats, or specialized corrosion-resistant alloys, butterfly valves can be used for many chemical and corrosive applications.

Q: What is your minimum order quantity (MOQ)?

A: MOQ varies depending on valve type, size, and customization requirements.For standard products, flexible order quantities are available. Please contact our sales team for detailed information.

Q: How long is your production lead time?

A: Lead time depends on product specifications and order quantity.Standard products are generally produced faster than customized valves. Our sales team will confirm the estimated production schedule after reviewing your order requirements.

Q: Do you provide samples?

A: Yes.Sample availability depends on valve specifications and project requirements.
Samples allow customers to verify product quality, dimensions, and performance before placing volume orders.

Q: Do you provide technical drawings?

A: Yes, we provide comprehensive technical documentation including general arrangement drawings, dimension drawings, installation drawings, material lists, technical datasheets, and operation manuals to support your engineering design, installation, and project approval.

Q: What standards and certifications do your valves comply with?

A: Our butterfly valves are manufactured in accordance with international standards such as API, ISO, and CE, ensuring reliable performance for global projects.

Q: How do you ensure product quality and reliability?

A: All valves are produced under strict quality control, from raw material inspection to final pressure and sealing tests.

As one of the most professional butterfly valve manufacturers and suppliers in China, we have world-leading production equipment and strong manufacturing capabilities. Please feel free to wholesale advanced butterfly valve at competitive price from our factory.