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  • triple offset butterfly valve 01
  • triple offset butterfly valve 02
  • triple offset butterfly valve 03
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  • triple offset butterfly valve 05

Triple Offset Butterfly Valves Collection

With a stainless-steel hardening treatment, our triple-offset butterfly valves (or triple eccentric butterfly valves) come with abrasive resistance to withstand harsh environments. As a qualified industrial valve company, along with wear and scour resistant seal rings, our valves are made with a one-piece casting craft mold for a more stable structure. A geometric design for sealing components gives our valves friction-free stroking to extend their service life.

DomBor Valve meets high demand for its triple offset butterfly valves with lean production practices and the efficiency of our lathes, CNC machines, machining centers and other machines. Applying the latest technology throughout production results in accurate valve designs that directly respond to your concerns.


  • Laminated resilient disc seal
  • Lower torques
  • Zero leakage seat tightness
  • Fire safe design
  • Fugitive Emissions
  • Live-loading of packing
  • Industry-leading emission control
  • Metal & Graphite Laminated Disc Sealing

Main Features of the Product

  • The replaceable seat and seal ring system extends the overall service life of each Dongbao valve, thus minimizing downtime without expensive field maintenance or full replacement
  • Two way zero leakage seal
  • The unique three eccentric structure makes our valve stable, reliable and easy to maintain
  • Compared with gate, stop or ball valves of the same size and pressure class, Dongbao butterfly valve saves space and weight, and reduces the installation and maintenance cost to the greatest extent.
  • High strength material stem, anti fly out stem and integrated stem design make the valve more stable and suitable for more operation modes
  • Live-loading of packing and low leakage packing (meet ISO 15848-1) makes the stem seal safer and suitable for more working conditions

Technical Specifications

Size Range Body Materials
2″-144″(50mm-3600mm) Carbon Steel,Stainless Steel,Nickel Aluminum Bronze,alloy steel,etc
Temperature Range Stem Material
-196 to 550 degree Staniless Steel
Pressure Ratings Body Style
Class 150 to Class 1500,PN 2.5 to PN250,10K-20K Wafer, Lug and Double Flanged,Butt Welded
Design Standard Flange Drilling
ASME B16.34,  API 609 ASME B16.5, EN 1092,GOST 33259
Testing Standard Certifications
API 598,EN12266-1,ISO 5208 API 609,CE,EAC,SIL3,API 607,ISO 19001
Face to Face Fugitive Emissions
API 609,ISO 5752,MSS SP-68,ASME B16.10,EN558-1 ISO 158484-1
Seat Materials Operation
SS+Graphite Wench, Worm Gear, Electric, Pneumatic,etc
Bulk liquid storage, oil & gas, LNG storage & transportation, steam distribution systems, power generation, geothermal steam, sugar & ethanol, pulp & paper liquor, refining, chemical processing, water & wastewater, air separation, cryogenic services

Trusted Triple Offset Butterfly Valve Manufacturer

Dombor is a professional high-performance butterfly valve manufacturer with a specialty in producing triple offset butterfly valves in China.

We have over two decades of experience in providing several clients with various tricentric butterfly valves for different applications, making us highly trusted globally as one of the best triple offset butterfly valve suppliers. Our products are recognized for their functioning characteristics and seal tight capabilities.


Butterfly Valves for Wastewater Treatment


  • Triple offset butterfly valve features metal-to-metal sealing, which ensures bubble-tight shut-off, resulting in zero leakage.
  • Highly resistant to corrosion and abrasive media since the construction of these valves don’t contain elastomers and other similar materials.
  • No gaps in the sealing components, hence guarantee for no blockages, minimal maintenance, and long service life.
  • Features a cam-action and right-angled design that ensure the metal sealing parts don’t come in contact except at the final degree of sealing. This guarantees zero clogging and results in an increase in the operation frequency.


  • The multi-layered soft and hard stacked sealing ring is installed on the valve plate and when it’s opened, there’s positive erosion on the sealing surface. The efficiency of the sealing begins to depreciate after the soft sealing ring is washed off into the metal plate interlayer.
  • Has structural limitations. The structure is not suitable for valves with a diameter below DN200 as the whole shape of the valve plate is thicker and displays a higher flow resistance.

Applications of Dombor Triple Eccentric Butterfly Valve

Over the years, Dombor has remained in the top list of triple eccentric butterfly valve manufacturers not only because of quality production, but for the varied applications of our products across many industries.


As a reliable triple offset butterfly valve manufacturer, Our triple offset butterfly valves are used in the oil and gas industry for 100% media sealing. The valves are put through stringent inspections to ensure they perform maximally.

Pipeline Industry

To ensure the smooth flow of fluid in pipelines, triple offset butterfly valve manufacturer Dombor supplies tough and abrasion-resistant triple offset butterfly valve that prevent clogging and limit pressure loss during media transfer.

Refinery and Petrochemical Industry

For industries that handle compositions of products, including harmful substances, we provide strong and tight-seal triple offset metal seated butterfly valves for optimal safety.

Wastewater Treatment

No other valve closes all channels better than our triple eccentric and concentric butterfly valves. With these valves, the environment doesn’t get contaminated with waste water. And purified water can be adequately distributed without spills.

Marine and Ship

Dombor’s triple eccentric butterfly valve are applicable across many marine and ship activities, such as handling of lubes and heavy media, as well as smooth fluid flow.

Power Generation

Power generation applications are very critical and low-quality equipment can cause great damage. But with our triple offset butterfly valve, there’s a 100% assurance of successful projects.

Why do You Need China Triple Offset Butterfly Valve

This China triple offset butterfly valve type is unique, as it performs functions that cannot be carried out by other valves. The triple offset butterfly valve is generally used in applications where there’s a need for a bubble-tight shut-off. It’s superior to other valves in areas involving harsh chemicals and particles that are infamous for clogging valves and pipelines.


Other reasons why you need this valve from triple offset butterfly valve manufacturer Dombor include the ease of installation, operation, maintenance, improved sealing capacity, corrosion resistance, and ability to function across high-pressure and high-temperature applications.

A Triple Offset Butterfly Valve

20+ Years Experience as a Triple Offset Butterfly Valve Manufacturer

Dombor is a leading triple-offset butterfly valve manufacturer with more than 20 years of experience in offering all-around industrial valve solutions to numerous industries. Below are a few reasons why choose us as your triple eccentric butterfly valve partner.

Tailor-made Valve Solution

Having a fully-equipped triple offset butterfly valve factory and highly-skilled staff, we offer unique triple eccentric butterfly valve designs tailored specifically to each client’s needs.


Our capabilities cut across many sections, including the manufacturing and supply of wholesale triple offset butterfly valve, industrial ball valve, and other valves. They can be made with various materials and in different shapes.


Dombor’s products and services are in compliance with global standards and specifications, making them applicable in every part of the world. Some of the standards we comply with are ISO, API, MSS, and ASME.

Fast Delivery

We have a trusted raw material supplier and 5 production lines, ensuring that production is fast and delivery is made within the discussed lead time.

After Sales Service

Our customers are beneficiaries of value-added services like warranties. We offer 24/7 customer service, providing immediate reply to all inquiries to ensure optimal satisfaction.

China Triple Eccentric Butterfly Valve Sourcing Guide

Before sourcing from triple eccentric butterfly valve manufacturer, there are some factors you need to put into consideration.

What is a Triple Offset Butterfly Valve

A triple offset butterfly valve has three different offsets (also known as balancing effects). The first offset refers to the shaft location in reference to the bore centerlines. The second offset is located in the seat cone angle design. And the geometrical structure of the sealing components makes up the third offset.

Construction of the Triple Offset Butterfly Valve

Triple offset butterfly valve features a stem that is offset on both the first and second axis of the valve’s centerline. This results in a cam-like motion as the valve operates. The third offset refers to an inclined conical profile machined into the valve’s sealing surface, which allows rotary engagement and disengagement of the seat and seal without disturbance.

How does a Triple Eccentric Butterfly Valve Work

The triple offset disallows all friction between the seat and seal ring during the valve travel, thereby limiting the seat and seal wear, and extending the service life. After the seat and seal ring are fully engaged, torque is applied to create a bi-directional, zero leak, metal-to-metal seal. This is the reason why triple offset butterfly valves are often described as “toque-seated” rather than “position-seated” as in the case of high-performing or resilient products.

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The Lowest-Cost Strategy Is To Choose Reliable DomBor Valves.

DomBor Valve, with its experienced specialists, specializes in manufacturing industrial valves and provides technical support and one-stop solutions for the global market.

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Generating high-quality valve solutions requires a deep insight into market needs. DomBor Valve, as a reliable valve manufacturer, relies on a trusted supply network, the latest production, and assembly machinery, along with digital design capabilities and 20 years of industry experience.

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