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Bronze Disc Wafer Butterfly Valve - Durable & Efficient
Water butterfly valve

Bronze Disc Wafer Butterfly Valve - Durable & Efficient

This bronze disc butterfly valve is designed for reliable flow control in industrial and marine systems, featuring a precision-cast aluminum bronze disc delivering excellent seawater corrosion and cavitation resistance. Built to international standards, it is offered in wafer and lug body types with a concentric structure and fully encapsulated EPDM/NBR seat for bubble-tight bi-directional sealing and low operating torque.
The stainless steel stem and reinforced bearings ensure smooth operation and extended service life. Suitable for pressure ratings PN10/PN16 and Class 125/150, it accommodates water, seawater, oil, and non-corrosive gases. It supports lever, gear, electric, and pneumatic actuation.
With a compact, lightweight design, the valve is easy to install and maintain, widely used in marine engineering, water treatment, desalination, and fluid pipelines requiring stable, long-lasting performance.

    Wafer butterfly valves offer several significant advantages. Firstly, their compact and lightweight design makes them highly space - efficient, ideal for installations where space is limited. Unlike traditional valves, their wafer - style body can be easily sandwiched between two flanges, reducing installation complexity and saving both time and cost.
    The bronze disc butterfly valve stands out as a premium fluid control solution, with its core advantage lying in the high-performance aluminum bronze disc—a material engineered to deliver unmatched resistance to seawater corrosion, cavitation, and chemical erosion. Unlike standard carbon steel valves that degrade rapidly in harsh marine, desalination, or corrosive industrial environments, this valve maintains structural integrity and tight sealing for decades, reducing frequent replacements and maintenance costs. Its corrosion resistance is further reinforced by a precision-cast bronze disc finish, ensuring consistent performance even in prolonged exposure to saltwater, brackish liquids, and mild corrosive media.
     
    A second key strength is its bubble-tight bi-directional sealing with minimal operating torque. The valve adopts a concentric disc structure paired with a fully encapsulated elastomer seat (customizable to EPDM, NBR, or PTFE), achieving zero-leakage shut-off that meets international industrial standards. This design not only prevents fluid loss but also reduces wear on stem and bearing components—critical for long-term durability. Unlike traditional valves that demand high torque to operate, its streamlined structure ensures smooth, effortless opening and closing, even under fluctuating pressure conditions, enabling precise throttling control for both on-off and proportional flow regulation.
     
    Versatile compatibility and easy installation further elevate its market competitiveness. Available in wafer (space-efficient) and lug (tool-free removal) body configurations, it adheres to global standards including ANSI, DIN, and BS, ensuring seamless integration with diverse pipeline systems worldwide. Its compact, lightweight design simplifies on-site installation, cutting labor time and equipment costs. The valve accommodates a wide pressure range (PN10–PN16, Class 125/150) and temperature tolerance (-20°C to 120°C), making it adaptable to water treatment plants, marine piping, oilfield fluid transport, and desalination systems—eliminating the need for custom-specific variants.
     
    Multi-actuation flexibility adds operational convenience, supporting manual lever, handwheel gearbox, electric, and pneumatic actuators. This allows seamless integration into both manual control systems and fully automated industrial pipelines, catering to diverse on-site control needs and future scalability. Complemented by a stainless steel stem and reinforced bearings that minimize friction during frequent cycling, the valve ensures stable, low-maintenance performance with reduced downtime.
     
    As a cost-effective, high-reliability solution, it outperforms competitors in longevity, adaptability, and performance, making it the top choice for industries prioritizing durable, efficient flow control in challenging environments.
    In terms of operation, these valves provide quick opening and closing, typically achieved with a 90 - degree rotation of the handle or actuator. This rapid response makes them suitable for applications requiring frequent on - off control. The streamlined disc design minimizes flow resistance, ensuring low pressure drop and high flow capacity, which improves system efficiency and reduces energy consumption.
     

    DIMENSIONS in(mm)
    Size A B C2 D E F KxK Top Plate 
                    PCD HOLE N-Dia
    DN50 140 70 105 41 90 30 11x11 70 4-θ9
    DN65 152 76 117 44 90 30 11x11 70 4-θ9
    DN80 159 91 130 44 90 30 11x11 70 4-θ9
    DN100 178 102 162 51 90 30 14x14 70 4-θ9
    DN125 191 119 187 54 90 30 14x14 70 4-θ9
    DN150 203 133 216 54 90 30 17x17 70 4-θ11
    DN200 241 170 271 64 125 30 17x17 102 4-θ11
    DN250 273 210 330 64 125 30 22x22 102 4-θ11
    DN300 308 243 376 76 125 30 22x22 102 4-θ11

    Size A B C2 D E F K SxS/d Top Plate Data
                      PCD
    DN350 413 267 45 150 80 525 470 22x22 125
    DN400 451 309 45 175 90 585 525 27x27 140
    DN450 467 318 45 175 109 650 585 27x27 140
    DN500 525 350 45 175 127 720 650 36x36 140
    DN600 607 410 45 210 154 850 770 36x36 165

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    PN10
    Size A B C L фD фK Nxфd 4xM фE фF G H O P фR Weight(Kg)
    DN700 784 581 163 169 895 840 24xф31 / 741 695 15 355 146 146 228 400 361
    DN800 832 655 188 195 1015 950 24xф34 / 847 794.7 15 355 146 146 228 400 444
    DN900 974 745 203 211 1115 1050 24xф34 4xM30 943 864.7 12.857 377 170 170 243 450 660
    DN1000 1054 803 216 224 1230 1160 24xф37 4xM33 1049 965.7 12.857 377 170 170 243 450 830

    PN16
    Size A B C L фD фK Nxфd 4xM фE фF G H O P фR Weight(Kg)
    DN700 784 581 163 169 910 840 20xф37 4xM33 741 695 15 355 146 146 228 400 396
    DN800 926 655 188 195 1025 950 20xф40 4xM36 847 794.7 15 377 170 170 243 450 573
    DN900 974 745 203 211 1125 1050 24xф40 4xM36 943 864.7 12.857 377 170 170 243 450 690
    DN1000 1110 803 216 224 1255 1170 24xф43 4xM39 1049 965.7 12.857 476 180 250 302 450 1025

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    butterfly valve

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