News & Events

Understanding the Role and Design of Marine Butterfly Valves

Introduction: Marine butterfly valves are crucial components in the maritime industry, playing a vital role in controlling the flow of fluids onboard ships and offshore platforms. Understanding their design, functionality, and applications is essential for ensuring efficient and reliable operation in marine environments.

Design and Construction: Marine butterfly valves are typically designed with a disc or plate that pivots on a central axis within the pipe. This disc, resembling the wings of a butterfly, can be rotated to either permit or restrict the flow of fluids. The valve operates by turning the disc parallel to the flow direction to allow fluid passage or perpendicular to block the flow.

These valves are constructed using materials that can withstand the corrosive effects of seawater and harsh marine conditions. Common materials include stainless steel, bronze, and other corrosion-resistant alloys. Additionally, marine butterfly valves are often equipped with sealing materials such as EPDM or Viton to ensure tight shut-off and prevent leakage.

Applications: Marine butterfly valves find applications in various onboard systems, including:

Ballast Systems: Controlling the flow of water for stability and trim adjustments.

Cooling Water Systems: Regulating the flow of seawater for engine cooling and heat exchange.

Bilge Systems: Managing the discharge of wastewater and bilge water.

Fuel Oil Transfer Systems: Controlling the flow of fuel oil for propulsion and power generation.

These valves are preferred for their compact design, lightweight construction, and ease of operation, making them suitable for use in confined spaces aboard vessels.


Maintenance and Inspection: Regular maintenance and inspection of marine butterfly valves are essential to ensure optimal performance and prevent failures. This includes lubrication of moving parts, checking for signs of corrosion or wear, and testing valve operation to verify functionality.

Conclusion: Marine butterfly valves play a critical role in the safe and efficient operation of marine systems. Understanding their design, applications, and maintenance requirements is essential for ensuring reliable performance and safety at sea.


Tianjin Tanghai Valve Co., Ltd. is a professional marine valve manufacturer, including butterfly

valve, check valve, gate /Knife gate valve. We have certificates: CE, ISO, BV, DNV foundry and

products approval. Now we have our own independent R & D, manufacturing, assembly and

warehousing workshops; we have professional pre-sale and after-sale technical support and

perfect services.

Below is our wafer butterfly valve of marine valves,if you need to check more information,

please click here: contact us if you need more support, please contact us freely:

We are committed to “Build a top valve enterprise; Be a reliable partner!”

Friends from all over the world are welcome to visit us for evaluation, guidance, and orders!