Available Medium: Sea water, Fresh water,Air,Crude oil and finished oil at the temperature 80℃ and below 80℃
Using instruction:
Marine butterfly valves are commonly used as shut-off or regulating devices in ship pipeline systems, suitable for media such as seawater, fresh water, fuel oil, and air. Their design and functionality comply with marine industry standards (e.g., ABS, DNV, GL classification society standards), offering the following core features and advantages:
1. Structural Features
Compact and Lightweight
Simple valve body structure with small size and light weight, facilitating installation and maintenance—particularly ideal for space-constrained environments on ships.
Compared with gate valves or ball valves, they can reduce weight by 30%–50% for the same nominal diameter.
Rapid Operation
The valve disc completes full opening or closing with a 90° rotation, enabling convenient operation and suiting emergency shut-off scenarios (e.g., fire-fighting systems).
Low Flow Resistance
When fully open, the disc aligns parallel to the fluid flow, resulting in a low flow resistance coefficient (approximately 0.1–0.3), which reduces energy consumption in the pipeline system.
2. Performance Advantages
Reliable Sealing
Utilizes elastic sealing (e.g., rubber, fluoroplastic) or metal hard-sealing structures to ensure tightness in low or high-pressure environments.
Some models feature bi-directional sealing capability, suitable for pipelines with uncertain media flow directions.
Strong Corrosion Resistance
Valve bodies and discs are typically made of stainless steel (e.g., 316L), nickel-based alloys, or corrosion-resistant coatings (e.g., epoxy resin) to withstand marine seawater environments.
Sealing materials can be selected from NBR, EPDM, or FKM for oil resistance and aging resistance.
Flexible Operation Modes
Supports multiple actuation methods, including manual, electric, pneumatic, and hydraulic, meeting automation control requirements (e.g., remote cabin operation).
Wide Application Range
Nominal diameters typically range from DN40 to DN1200, with pressure ratings covering PN10–PN40 (or Class 150–Class 300), adapting to pipeline systems of different diameters and pressures.
