About product
The application of butterfly valves in marine vessels is widespread due to their simplicity and ease of operation, as well as relatively low maintenance and replacement costs. These valves come in various types, including handle-operated, turbine-operated, spiral-operated, pneumatic, pneumatic with manual override, hydraulic, hydraulic with manual override. Some may also include feedback and locking features.
These valves can be used to control the flow of various fluids such as air, water, steam, corrosive substances, slurry, oil, liquid metals, and radioactive materials. They primarily serve the purpose of shut-off and throttling in pipelines. The disc-shaped butterfly closure element rotates around its own axis within the valve body to achieve opening, closing, or regulating effects.
The rotation angle of butterfly valves from fully open to fully closed is typically less than 90°. Butterfly valves and the stem itself do not possess self-locking capability. To position the butterfly disc accurately, a worm gear reducer is installed on the stem. By using a worm gear reducer, not only does the butterfly disc acquire self-locking ability to stop at any desired position, but it also improves the operational performance of the valve.
