Factory Direct Sale Wafer Butterfly-Valve/China Low Price /Good Quality/Customized Service/Ductile Iron/Cheap Price/Pph/EPDM

• Customization: Available
• Media: Gas, Water, Steam
• Driving Mode: Manual, Electric, Hydralic, Pneumatic
• Model NO.: bv-001
• Connection Form: Flange, Weld, Wafer
• Structure: Centre Sealing
• Seal Form: Metal and Hard Sealing
• Valve Stem: Normal
• Work Pressure: Low Pressure (Pn<1.6mpa)
• Working Temperature: Medium Temperature (120°C<T<450°C)
• Material of Seal Surface: Hard Weld
• Valve Body: Casting
• Standard: API609 En593 BS5155 En1092 ISO5211
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Delivery Time: 15-25 Days
• Disc Material: Carbon Steel, Stainless Steel, Chrome Molybdenum S
• Seat Material: NBR/EPDM/PTFE/Viton/Silicone etc
• Coating: Customized
• End Standard: Pn6/10/16/25/21/150lb/JIS5K/10K/As2129 Table D/E/F
• Materials: Carbon Steel, Stainless Steel, Aluminum Bronze
• Shutoff Tightness: Zero Leakage
• Body Material: Carbon Steel, Stainless Steel, Chrome Molybdeum St
• Stem Material: 2Cr13, 1Cr13, Stainless Steel, Chrome Molybdenum S
• O Ring Material: Stainless Steel and High Tempt. Asbestos Combined
• Face to Face: GB/T12221-89, API 609, JIS 2032
• Transport Package: Wooden Case
• Specification: customized
• Trademark: Yoonad
• Origin: China
• HS Code: 8481804090
• Production Capacity: 10000PCS/Year

Product Description

Wafer butterfly valve This product is composed of a rubber seal butterfly valve, a carbon steel or stainless steel valve plate, and a valve stem. It is suitable for regulating flow and intercepting media in water supply, drainage and gas pipelines with temperatures ≤80~120ºC such as food, medicine, chemical industry, petroleum, electric power, light textile, papermaking, etc. Its main features are:
1. The design is novel and reasonable, the structure is unique, the weight is light, and it can open and close quickly.
2. The operating torque is small, the operation is convenient, labor-saving and dexterous.
3. It can be installed at any position and is easy to maintain.
4. The seals can be replaced, and the sealing performance is reliable and achieves two-way sealing and zero leakage.
5. The sealing material is resistant to aging, weak corrosion, and long service life.

Design standards: GB/T2238-1989
Flange connection dimensions: GB/T9113.1-2000; GB/T9115.1-2000; JB78
Structure length: GB/T12221-1989
Pressure test: GB/T13927-1992; JB/T9092-1999






• Triple offset geometry
• Integral metal seal ring sealing
• Zero Leakage for both way
• Anti-blow out shaft
• Fire safe design to API607
• Replaceable Seat & Disc Sealing
• 0°-90°control, no jump area
• Friction free



The working principle of butterfly valve is very simple. It controls the flow and direction of fluid through the rotation of valve disc. When the valve disc is closed, a closed space is formed between the valve disc and the valve seat to avoid fluid leakage. When the valve disc rotates to the open state, the gap between the valve disc and the valve seat gradually expands, so that the fluid flows through the butterfly valve.

Butterfly valve control methods are divided into manual and automatic. The manual control method is usually to rotate the valve disc through the manual wheel and other devices to control the fluid.

Automatic drive can be divided into pneumatic and electric. Pneumatic butterfly valve is a pneumatic valve that uses a circular butterfly plate that rotates with the valve stem to open and close, so as to realize the activation action. It is mainly used as a block valve, and can also be designed to have the function of adjustment or valve break and adjustment. Butterfly valves are used more and more in low-pressure large and medium-diameter pipelines. The electric butterfly valve is composed of an electric actuator and a butterfly valve. There are two control modes: switch and adjustment. The electric actuator rotates to drive the butterfly valve to open and close. At the same time, the electric butterfly valve also has the function of manual operation, which is convenient to open and close the butterfly valve by manual operation when power failure occurs.

Wafer butterfly valves are an essential component in many different types of piping systems. They provide efficient and reliable performance while also being relatively easy to install and operate. Understanding the basics of how they work and the features they possess will help you choose the right wafer butterfly valve for your application. Additionally, it is important to follow proper maintenance practices to ensure that your valve offers maximum performance and reliability. With regular inspections and proper operation techniques, you can get the most out of your wafer type butterfly valve for a long time to come.