Butterfly Valve
Butterfly valves are widely used in petrochemical, electric power, water treatment, HVAC, food and medicine and other fields to achieve fluid flow, pressure regulation and system safety control.
Kung is a professional butterfly valve supplier in China, providing a one-stop solution for your project construction or maintenance.Whether you need to apply to water supply systems, sewage treatment, or oil and gas pipeline transmission systems, we have the appropriate butterfly valves.All of our butterfly valves are manufactured with of high quality and durable.
Structural Features
Simple structure: butterfly valve is mainly composed of valve body, butterfly plate, stem and drive device, compared with some complex valves, such as gate valves, ball valves, etc., its structure is relatively simple, the number of parts is small, which makes the manufacturing process of butterfly valve is relatively easy, the cost is relatively low.
Small size, light weight: butterfly valve compact structure, small size, relatively light weight, easy to install, disassemble and transport, especially suitable for some limited space occasions, such as ships, high-rise buildings and other pipeline systems.
Buterfly Valve Classified

- Design: API 609-2004
- Class: PN10/16, 125/150Lbs
- Face to face: API 609; EN558 1-20 Series
- Flange Connection: EN1092.2 / ASME B 16.1
- Testing: API 598
- Size: DN40 – DN1200

- Design: API 609-2004
- Class: PN10/16, 125/150Lbs
- Face to face: API 609; EN558 1-20 Series
- Flange Connection: EN1092.2 / ASME B 16.1
- Testing: API 598
- Size: DN40 – DN300

- Design: API 609-2004
- Class: PN10/16, 125/150Lbs
- Face to face: API 609; EN558 1-20 Series
- Flange Connection: EN1092.2 / ASME B 16.1
- Testing: API 598
- Size: DN40 – DN600

- Design: API 609-2004
- Class: PN10/16, 125/150Lbs
- Face to face: API 609; EN558 1-20 Series
- Flange Connection: EN1092.2 / ASME B 16.1
- Testing: API 598
- Size: DN40 – DN300

- Design: EN 1092
- Class: PN10/16, 125/150Lbs
- Face to face: BS5155; EN558 1-20 Series etc.
- Flange Connection: EN1092.2 / ASME B 16.1
- Testing: API 598
- Size: DN50 – DN1200

- Design: API 609-2004, MSS SP-67
- Class: PN10/16, 125/150Lbs
- Testing: API 598
- Size: DN50 – DN300

- Rubber seat fully vulcanized inside body
- Design: API 609-2004; EN 593
- Class: PN10/16, 125/150Lbs
- Face to face: API 609; EN558 1-20 Series
- Flange Connection: EN1092.2 / ASME B 16.1
- Testing: API 598; EN 12266-1; EN 12516
- Size: DN40 – DN1200

- Rubber seat fully vulcanized inside body
- Design: API 609-2004; AWWA C504; EN 593
- Class: PN10/16, 125/150Lbs
- Face to face: API 609; EN558 1-20 Series
- Flange Connection: EN1092.2 / ASME B 16.10
- Testing: API 598; EN 12266-1; EN 12516
- Size: DN100 – DN2000; 4” – 48”
More About Butterfly Valve
- Description
- Specifications
| Size: | DN32-DN2400 (NPS1 1/4-NPS96) |
| Pressure: | PN10, PN16, CLASS125, CLASS150 |
| Temperature: | -29℃ ~ + 120℃ |
| Body: | Ductile iron, Carbon Steel, Stainless Steel |
| Seat: | NBR, EPDM, PTFE |
| Disc/Decoration: | Epoxy-coated ductile iron, SS316, SS304, duplex stainless steel |
| Stem: | SS316, SS304, SS420, SS416 |
| Connection: | Wafer, lug, U-flange, Flange |
| Design standards: | API, DIN, ASME, ISO, ANSI, GB/T, BS EN, AWWA |
| Certificate: | CE, WRAS, API, ISO9001:2015, OHSAS18001:2007 |
| Applications: | Water, power plant, HVAC, food, medicine, seawater desalination |
| Pressure: | PN6/PN10/PN16, ANSI 125LB/150LB, 5K/10K |
| Size: | DN25 – DN2400 |
| Body: | Ductile Iron, Cast Iron, Carbon Steel, Stainless Steel |
| Seat: | EPDM, NBR, PTFE |
| Connection: | Wafer, Lug, Flange |
Compact and lightweight, less space required for installation, especially suitable for large-diameter pipe applications
Quick opening and closing, the disc only needs to be rotated 90° to complete the opening and closing. It is easy to operate and highly efficient.
Large flow capacity and low flow resistance.
Butterfly valve is widely used in petroleum, natural gas, chemical industry, metallurgy, electric power (thermal power, nuclear power), food, pharmaceutical, water treatment, environmental protection engineering, paper, textile, building materials and glass and other industries.
The clamping butterfly valve is installed by flange clamping. It has the characteristics of compact structure, small volume, light weight, reliable sealing, convenient installation and maintenance, and is widely used in flow regulation and truncation control for middle and low pressure pipeline systems.









