Corrosion-resistant Valves For Reliable Marine Flow Control
Marine double flange butterfly valve ensures reliable flow control in seawater and marine systems, offering superior corrosion resistance and tight shut-off.
Corrosion-resistant Valves For Reliable Marine Flow Control
Marine double flange butterfly valve ensures reliable flow control in seawater and marine systems, offering superior corrosion resistance and tight shut-off. ideal for ballast, bilge, and fuel systems, it delivers durable performance up to 16 bar.
Marine Double Flange Butterfly Valve is a high-performance valve engineered for reliable flow control and shut-off in marine and seawater applications. Compliant with standards like JIS F7480, API 609, and EN 558, these industrial butterfly valves are constructed from materials such as ductile iron (ASTM A536), aluminium bronze (C95400), or stainless steel (AISI 316), offering exceptional corrosion resistant butterfly valve properties. Widely used in ballast systems, bilge piping, fuel handling, and seawater cooling, they provide efficient pipeline flow control under pressures up to 16 bar (232 PSI) and temperatures ranging from -15°C to 120°C, ensuring durability in harsh marine environments.
Manufactured through precision casting or forging, the marine double flange butterfly valve features a double flanged design for secure, leak-proof connections between pipeline sections, enhancing operational safety. Available in sizes from 1.5" to 48" (DN40 to DN1200), they support flanged connections per JIS B2212, ASME B16.5, or EN 1092. The resilient seats, typically made of EPDM, NBR, or Viton, provide bubble-tight sealing, ideal for resilient seated butterfly valve applications handling seawater, oils, and hydrocarbons. Surface treatments like epoxy coating (200 μm) or electroless nickel plating enhance corrosion resistance, ensuring long-term performance in corrosive marine environments.
Marine Double Flange Butterfly Valves undergo rigorous testing, including hydrostatic, pneumatic, and leakage tests, to comply with API 598, JIS B2003, and EN 12266 standards. With a minimum tensile strength of 485 MPa and yield strength of 275 MPa for ductile iron, these valves ensure structural integrity under high-impact conditions. The concentric or double offset disc design minimizes operating torque, enabling smooth operation with manual levers, gearboxes, or pneumatic/electric actuators. Features like ISO 5211 mounting pads, anti-blowout stems, and self-lubricating bushings enhance reliability and compatibility with automated systems in marine applications.
Compared to wafer or lug butterfly valves, the marine double flange butterfly valve offers superior stability and strength due to its dual-flanged construction, making it ideal for high-vibration marine systems. Certified by Lloyd’s, DNV, ABS, or BV for marine use, these valves are designed for easy maintenance, with replaceable seats and seals to minimize downtime. Their robust design resists seawater corrosion and wear, extending service life in applications like shipbuilding and offshore platforms. Specialized options, such as double eccentric designs or NBR-lined valves, cater to specific needs like fuel oil or high-cycle operations.
Addressing challenges like seawater corrosion, pipeline leaks, and operational reliability, Marine Double Flange Butterfly Valves deliver efficient, durable solutions for marine piping systems. Their corrosion-resistant materials, secure flanged connections, and low-maintenance design make them a preferred choice for engineers seeking reliable seawater butterfly valves. Backed by Sunny Steel’s white-glove service, these valves ensure exceptional performance, safety, and longevity in ballast, bilge, and seawater cooling systems.
| Organization | Standard | Description |
|---|---|---|
| ANSI | American National Standards Institute | General industrial standards |
| API | American Petroleum Institute | Standards for oil and gas industry |
| ASME | American Society of Mechanical Engineers | Boiler and pressure vessel codes |
| BS | British Standards | UK national standards |
| GB, JB, HG | China Valve Standards | Chinese national and industry standards |
Upstream, midstream, and downstream operations, including drilling, refining, and transportation.
Handling corrosive and hazardous chemicals in various chemical plants.
Steam, water, and fuel systems in thermal, nuclear, and hydroelectric plants.
Municipal water supply, wastewater treatment, and industrial water management.
Heating, ventilation, and air conditioning systems in commercial and industrial buildings.
Sterile and hygienic applications, precise flow control in sensitive industries.
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