Butterfly Valve Manufacturer & Supplier – MACTOR HEAVY INDUSTRIES CO., LTD

About MACTOR

MACTOR Heavy Industries Co., Ltd was founded in 1995 as a butterfly valve manufacturer originally known as JS Valve. For over 20 years, we have specialized in the design, development, and production of high-quality butterfly valves for a wide range of industrial applications.

Our manufacturing facilities are certified under ISO 9001 standards, ensuring consistent quality, durability, and compliance with international safety regulations. Our products have also obtained CE certification, reflecting our commitment to meeting European safety and performance standards.

We strive to earn our customers' trust by offering an extensive line of reliable, high-performance valves with a proven track record across global markets. From oil and gas to water treatment and power generation, MACTOR valves deliver precision, longevity, and value.

Our Valve Products

Explore our comprehensive range of butterfly valves engineered for reliability, efficiency, and long service life in demanding industrial environments.

Lug Triple-offset Sealing Butterfly Valve

Ideal for high-pressure applications with superior sealing performance and minimal maintenance requirements.

Triple offset design
Metal-to-metal sealing
Bi-directional sealing

Wafer Central Line Soft Seal Butterfly Valve

Cost-effective solution for low to medium pressure systems with excellent bubble-tight shut-off.

Resilient EPDM/NBR seat
Wafer type installation
Corrosion-resistant body

Wafer Triple-offset Sealing Butterfly Valve

Advanced sealing technology for critical applications requiring zero leakage and high cycle life.

Zero friction during operation
Fire-safe design
API 609 compliant

High Performance Butterfly Valve

Engineered for demanding services in chemical, petrochemical, and offshore industries.

Double offset design
High torque capability
Extended temperature range

Metal To Metal Butterfly Valve

Designed for extreme temperatures and abrasive media where soft seals are not suitable.

Stellite or tungsten carbide sealing
High wear resistance
Suitable for steam service

Concentric Butterfly Valve

Standard design for general-purpose on/off and throttling applications in water and air systems.

Simple and reliable operation
Low operating torque
Compact and lightweight

Flange Triple-offset Sealing Butterfly Valve

Integrated flanged ends for easy installation in pipeline systems requiring high integrity sealing.

ASME B16.47 compatible
Full port design
Bolted seat construction

Resilient Seat Butterfly Valve

Economical and efficient valve for water, wastewater, and HVAC applications.

Bubble-tight shut-off
Low maintenance
Long service life

Why Choose MACTOR Valves

ISO 9001 Certified

Our manufacturing processes meet international quality standards for consistent product excellence.

CE Certified

Our valves comply with European safety and performance requirements for industrial equipment.

20+ Years Experience

Founded in 1995, we bring decades of expertise in butterfly valve engineering and production.

Global Reach

Trusted by clients in over 50 countries across oil & gas, water, power, and chemical industries.

Frequently Asked Questions

What is a triple offset butterfly valve?

A triple offset butterfly valve features three design offsets: one at the seat, one at the shaft, and one at the disc. This design eliminates friction between the seat and disc during operation, providing bubble-tight sealing, long service life, and suitability for high-pressure and high-temperature applications.

What certifications do MACTOR valves have?

Our manufacturing facilities are ISO 9001 certified, and our valves have obtained CE certification. We comply with international standards including API 609, ASME B16.10, and EN 593 to ensure quality, safety, and performance.

What materials are used in MACTOR butterfly valves?

We manufacture valves using a range of materials including ductile iron, carbon steel, stainless steel (CF8, CF8M), and alloy steels. Seats are available in EPDM, NBR, PTFE, or metal-to-metal configurations depending on application requirements.

What is positive shut-off in valves?

Positive shut-off refers to a valve's ability to completely stop the flow of fluid without any leakage. MACTOR's triple offset and resilient seat butterfly valves are designed to provide positive shut-off, making them ideal for safety-critical and isolation applications.

Get in Touch

Have questions about our butterfly valves or need a custom solution? Contact us today for expert support.

Contact Information

Frank Zhang

+86 177 0663 2370

[email protected]

Dong’ou Industrial Area, Oubei, Yongjia, Wenzhou, Zhejiang, China

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