Marine Flange Butterfly Valve
Marine Flange Butterfly Valve is designed for reliable isolation and flow control in marine and offshore piping systems. Featuring flanged end connections for secure installation and easy maintenance, it is widely used in seawater, ballast water, cooling water, fire protection, fuel oil, and other shipboard systems. Manufactured from high-quality marine-grade materials, the valve provides dependable sealing performance, corrosion resistance, and long service life under demanding operating conditions. Available in manual, gearbox, pneumatic, and electric actuated configurations, it can be supplied with major marine classification approvals to meet the requirements of commercial vessels, shipbuilding projects, and offshore platforms.
Body Material QT450 / Stainless Steel / WCB Cast Steel / Aluminum Alloy
Size Range DN80 ~ DN500
Operating Temperature 0°C ~ 150°C
Marine Class Approvals CCS, ABS, DNV, LR, TÜV are available upon request.
Product Features
Flanged end connection ensures secure installation and reliable sealing.
Suitable for isolation and flow regulation in marine piping systems.
Available in concentric and double eccentric designs to suit different applications.
Low operating torque for smooth and efficient valve operation.
Manufactured from ductile iron, cast steel, stainless steel, bronze, and other marine-grade materials.
Compatible with manual lever, worm gear, pneumatic, electric, and hydraulic actuators.
Excellent corrosion resistance for seawater and other harsh marine environments.


