As a professional industrial valve manufacturer, WKT can supply valve custom service for clients because of our own valve factory.

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Customised Materials

The butterfly valves are available in a variety of options depending on the specific working conditions and medium. The valve body and disc materials can be cast iron, carbon steel, stainless steel, alloy steel, etc. to fit different pressure and temperature conditions. On the other hand, sealing surface materials can be synthetic rubber, polytetrafluoroethylene (PTFE) or other non-metallic materials as well as metal hard seal materials. Also, the valve seat can be made of PTFE, synthetic rubber, metal and other materials to ensure proper sealing performance and durability. In special cases where specific requirements have to be met with regard to anti-aging or corrosion resistance or even high-temperature resistance, then special material properties can also be considered.

| Butterfly Valve 

Usage Scenarios

Butterfly valves are suitable for a wide range of industrial applications due to various butterfly valve types, especially for systems requiring flow regulation. As butterfly valves have relatively large pressure loss in pipelines, they are more suitable for pipeline systems that do not require strict pressure loss. The fast opening and closing characteristics of butterfly valves make them suitable for applications requiring fast opening and closing. In addition, the butterfly valve's short structural length and large diameter capability make it the preferred choice for large diameter valves. Butterfly valves are also suitable for media containing solid particles, fibres or viscous substances, as well as for applications requiring low-noise operation and prevention of cavitation and vaporisation. Centreline butterfly valves are suitable for pipelines of fresh water, sewage, seawater, salt water, steam, natural gas, food, medicine and oil that require complete sealing, zero gas test leakage, long service life and operating temperatures of -10~150°C. Soft seal eccentric butterfly valves are suitable for bi-directional opening, closing and regulating of ventilation and dust removal pipelines, and are widely used in metallurgy, light industry, electric power and petrochemical systems for gas pipelines and waterways. Metal-to-metal double and triple eccentric butterfly valves are suitable for city heating, steam supply, water supply, gas, oil, acid and alkali pipelines as regulating and cutting off devices, and are also widely used in petroleum, petrochemical, chemical, metallurgy, electric power, etc. 

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Advantages of WKT Customised Valves

- Accuracy and customisation: WKT valve company customised valves are designed to meet specific operational requirements, ensuring precise control of fluid flow, pressure and temperature.

- Reliability: Depending on the application, custom valves take into account your unique conditions and challenges, resulting in increased reliability and avoiding the errors associated with standard fitting valves.
- Design Flexibility: Our highly trained engineers are willing to be flexible in their designs. We work with all of our customers to find the right solution for you, and because our manufacturing is done in-house, we have the ability to make decisions on almost every decision.
- Versatile material options: Different industries and applications require valves to handle specific fluids and corrosive environments. Our custom valves can be made from plastic, stainless steel, aluminium and brass materials that are best suited to the - given conditions, ensuring longevity and resistance to wear and corrosion.
- Rapid response and change: We understand that your needs change and that some industries change more than others. Our engineers are willing to work with you to modify or redesign prototypes to meet your changing needs.

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 Custom Cases

Butterfly Valve Cast Steel CF8 12” 150LB WAFER Concentric Line Resilient

A major desalination plant in our industrial estate on the seafront has recently installed 12" 150LB WAFER butterfly valves supplied by WKT, a Chinese butterfly valves manufacturer. These butterfly valves are made of CF8 cast steel and are designed to resist the corrosive nature of seawater. Due to their compactness and ease of operation, these butterfly valves not only save valuable space, but also improve the overall efficiency of the system. The butterfly valve's concentric resilient seat design provides excellent sealing performance and ensures reliability under all operating conditions. Operators are pleased with the butterfly valve's fast opening and closing speeds and easy maintenance procedures, which significantly reduce plant downtime and lower long-term operating costs. The high performance and durability of these butterfly valves are key to the plant's ability to meet the growing demand for fresh water.

Cast Steel WCB 40” 150LB RF Flange Triple Offset Metal-To-Metal Butterfly Valve With Gear Box

At a large petrochemical plant, our complex fluid control system has 40" 150LB RF Flanged Triple Eccentric Metal Hard Seal Butterfly Valves with gearboxes from WKT. These butterfly valves are specially designed for HP & HT service where the performance of the valve is good enough at elevated temperatures and pressures. The metal hard seal construction precludes seat deformation during higher temperature applications and provides positive shut off even in the lowest differential pressure situations, working to reduce wear during valve operation further. What's more, operators rated highly the butterfly valves regarding easy manipulation and integration with control systems because of their metal hard seal feature, which ensures zero leakage even after prolonged use and safety conditions for optimal performance of our systems. Furthermore, their compact design and robustness ensure fluid control requirements at our plant are met; therefore, they will be applied as standard equipment.

Butterfly Valve Cast Steel CF8C 40” 300LB RF Flange Triple Offset Metal-To-Metal Butterfly Valve With Pneumatic Actuator and Manual Hydraulic Operation

In a big petroleum refinery, fluid control is highly demanding of precision and dependability. Responding to this, the plant makes use of the following high-performance butterfly valve: 40" 300LB RF Flanged Triple Eccentric Metal Hard Seal Butterfly Valve (pneumatic actuators and manual hydraulic operation) manufactured by WKT with a body material of Cast Steel CF8C. This butterfly valve complies with API 609 Design: it has been subjected to API 598 testing and inspection and emerged with an assurance of very good performance and sealing in hot work applications. The design features full bore and triple eccentric structure which makes a notable decrease in operating torque and improves open-close efficiencies; as a result, service life gets longer. In practical applications, it showed excellent corrosion resistance and durability as demanded by the chemical industry in strict fluid control; stability of systems is assured together with production efficiency during petroleum refining processes.

Butterfly Valve Aluminum Bronze 28” 150LB Lug End Triple Offset Butterfly Valve Metal Seated Butterfly Valve

For a major water treatment project, our customer required a valve to operate in an extremely corrosive environment and ensure a tight seal. After careful evaluation, they selected a 28-inch 150LB Lug End Triple Offset Butterfly Valve in Aluminum Bronze from WKT with a full bore design meeting API 609 design standards and API 598 inspection standards for bringing optimal performance and reliability to their water treatment systems. The lug end connections and ASME/ANSI B16.47 standards allowed easy compatibility with the existing pipework and provided a secure, leak-free connection. Its triple offset design reduces greatly the operating torque while increasing efficiency in opening and closing the valve as well as extending service life. On-site, it had proved itself excellent corrosion resistance and stability which consequently meets very strict requirements of the water treatment industry regarding exact control and system stability to allow projects to run smoothly and efficiently.

Butterfly Valve Cast Steel 4A DN200 PN16 Lug End Triple Offset Butterfly Valve Stainless Steel Butterfly Valve

In a critical chemical project, the customer required a high-performance butterfly valve to be used in accurately controlling the flow of corrosive chemicals. The Cast Steel 4A DN200 PN16 Lug End Triple Offset Butterfly Valve from WKT satisfied such stringent operational requirements. It is made of ASTM A890 4A and features full-bore design meeting API 609 design standards and API 598 inspection standards, therefore very efficient fluid control and reliability in chemical processes. Gearbox operation makes it easy to control, while this time with Lug connections to ASME/ANSI B16.5 standard it means that it will fit into your existing pipework. The triple eccentric design reduces operating torque at the same time enhancing valve opening and closing efficiency plus extending service life. On the other hand, practically, this valve has met corrosion resistance and stability but has not yet then been able to realize effective demand for tight fluid control in terms of safety and efficiency of projects within the chemical industry.

| FAQs

1. Q: What are the advantages of Triple Eccentric Butterfly Valve compared with ordinary butterfly valve? 

A: Triple Eccentric Butterfly Valve reduces operating torque, improves sealing performance, and extends valve service life through triple eccentric design in axial, radial, and angular directions

2. Q: What is the sealing principle of the butterfly valve?

A: The sealing principle of Butterfly Valve mainly relies on the sealing surface of the outer circle of the valve plate squeezing the synthetic rubber seat, causing it to undergo elastic deformation and forming a sealing specific pressure to ensure the sealing of the valve.

3. Q: What are the operating options for butterfly valves? 

A:Butterfly valves can be operated manually, using a handwheel, or by automated methods such as worm gear, electric actuators, pneumatic actuators or hydraulic actuators.

4. Q: What is the applicable temperature range of Butterfly Valves?

A: Butterfly valves are classified into high temperature butterfly valves (t>450℃), medium temperature butterfly valves (120℃<t≤450℃), normal temperature butterfly valves, low temperature butterfly valves (-100℃<t<-29℃) and ultra-low temperature butterfly valves (t≤-100℃) according to the different working temperatures.

5. Q: What are the connection methods of butterfly valve? 

A:Butterfly valves can be connected by clamping type butterfly valve, flanged butterfly valve, lug type butterfly valve and welded butterfly valve.

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 Customer Reviews

1. 15 March 2022

  As an engineer in a chemical plant, I am very pleased with the recently installed 40" Triple Eccentric Metal Hard Seal Butterfly Valve made of CF8C in our plant. Since installing this butterfly valve with pneumatic actuator and manual hydraulic operation, it has performed well in high pressure environments with excellent sealing performance, greatly improving the stability and safety of our system. Its corrosion resistance and durability have also exceeded our expectations.

2. 20 July 2021

  In our natural gas transmission system, we use triple eccentric butterfly valves supplied by WKTIPVF, which play a key role in ensuring the safe and efficient transmission of natural gas. The sealing performance and pressure tolerance of the butterfly valve meets our high standards. Especially in emergencies, the manual hydraulic operation provides a reliable back-up control solution and ensures continuous operation of the system.

3. 30 November 2019

  As an operator at a water treatment plant, I am proud of our butterfly valve selection. Since installing this butterfly valve, which meets the API 609 design standard, it has excelled in accurately controlling the flow of water and has helped us maintain an efficient treatment system. The butterfly valve's full bore design reduces fluid resistance and improves overall performance.

4. 10 May 2020

  In food and beverage production, we demand the highest levels of hygiene and quality. This butterfly valve excels in controlling the precise flow of liquids and gases, ensuring hygiene and product quality in the production process. Its corrosion-resistant materials and advanced manufacturing process ensure long-term stable operation of the valve, which we are very satisfied with.

5. 5 January 2023

  Working on offshore oil platforms, the environment is extremely harsh, but our butterfly valve still performs well. It is very reliable in controlling the flow of seawater, oil and gas. The butterfly valve's design and materials are able to withstand high temperatures and pressures, ensuring stability under extreme conditions. In addition, its long life design reduces maintenance costs and improves efficiency.