Flanged Marine Ball Valve
Flanged Marine Ball Valve is a marine ball valve designed with flange connection ends for reliable installation in ship piping systems, offshore facilities, and large marine pipeline applications. Compared with threaded marine ball valves, flanged marine ball valves provide stronger mechanical connections and are commonly used for medium and large-size pipelines where stable performance and easy maintenance are required. The flanged connection design allows the valve to be securely bolted between pipeline flanges, providing excellent sealing performance and structural stability under marine operating conditions.
Flanged Marine Ball Valves are widely used in:
Seawater cooling systems
Ballast water systems
Fuel oil pipelines
Engine room piping
Fire protection systems
Marine auxiliary systems
Designed for demanding marine environments, Flanged Marine Ball Valves provide:
Reliable shut-off performance
Strong connection strength
Easy installation and maintenance
Long service life
Overview
Working Principle:
Flanged Marine Ball Valve operates through a quarter-turn rotating ball mechanism.The internal ball contains a flow passage that controls fluid movement. By rotating the ball 90 degrees, the valve can quickly switch between open and closed positions.
Open Position:When the ball passage aligns with the pipeline:
Fluid flows through the valve
Pressure loss is minimized
System efficiency is maintained
Closed Position:When the ball rotates perpendicular to the pipeline:
Fluid flow is blocked
Pipeline isolation is achieved
Reliable shut-off performance is provided
The quarter-turn design provides:
Fast operation
Low operating torque
Easy control
Reliable sealing
Main Components of GB Marine Ball Valve：
| Component | Function |
| Valve Body | Provides structural strength and pressure resistance |
| Flange Ends | Connect valve securely with pipeline flanges |
| Ball | Controls fluid flow through rotation |
| Valve Stem | Transfers operating force to the ball |
| Valve Seat | Provides sealing performance |
| Bolting Connection | Secures valve installation |
| Sealing Components | Prevent leakage during operation |
Applicable Standards
| Standard Category | Applicable Standards |
|---|---|
| Marine Valve Design | JIS F7400, DIN 85003, GB/T Marine Valve Standards |
| Ball Valve Design | API 608, API 6D, ISO 17292 |
| Flange Standards | JIS B2220, DIN EN 1092-1, ASME B16.5, GB/T 9112 |
| Pressure Rating | JIS 5K-20K, DIN PN Series, ANSI Class 150-600 |
| Pressure Testing | ISO 5208, API 598, EN 12266-1 |
| Material Standards | ASTM, EN, JIS Standards |
| Marine Classification | ABS, DNV, LR, BV, CCS |
Pressure Testing：
Valve body strength
Flange sealing performance
Leakage prevention
Operating reliability
Technical Specifications of GB Marine Ball Valve：
| Item | Specification |
| Product Type | Flanged Marine Ball Valve |
| Connection Type | Flanged Ends |
| Valve Type | Quarter Turn Ball Valve |
| Size Range | DN50-DN500 |
| Material Options | Bronze / Stainless Steel / Brass / Cast Iron |
| Flange Standard | According to Application Requirement |
| Operation Method | Manual Handle / Actuator |
| Medium | Seawater / Fresh Water / Oil / Gas |
| Application | Marine Piping Systems |
Comparison Between Flanged and Threaded Marine Ball Valve
| Item | Flanged Ball Valve | Threaded Ball Valve |
| Connection Method | Bolted flange connection | Thread connection |
| Pipeline Size | Medium and large pipelines | Small pipelines |
| Installation | More stable | Easier for compact systems |
| Maintenance | Easier removal | Suitable for simple systems |
| Application | Main marine systems | Auxiliary systems |
Applicable Media of Flanged Marine Ball Valve
| Medium | Applications |
| Seawater | Cooling systems, ballast systems, marine circulation |
| Fresh Water | Water supply and cooling pipelines |
| Fuel Oil | Fuel transfer systems |
| Air | Marine auxiliary systems |
| Gas | Marine equipment systems |
Material Selection of Flanged Marine Ball Valve:
Bronze
Stainless Steel
Brass
Cast Iron
Bronze Flanged Marine Ball Valve
| Feature | Description |
| Corrosion Resistance | Excellent seawater resistance |
| Marine Performance | Widely used in shipbuilding |
| Durability | Long service life |
| Reliability | Stable operation in marine systems |
Typical Applications
Seawater cooling systems
Ballast systems
Marine water pipelines
Ship auxiliary systems
Stainless Steel Flanged Marine Ball Valve
| Feature | Description |
| Corrosion Resistance | Suitable for harsh marine environments |
| Strength | High mechanical performance |
| Durability | Long operating life |
| Temperature Resistance | Suitable for demanding applications |
Typical Applications:
Marine engineering equipment
Corrosive fluid systems
High-performance vessels
Brass Flanged Marine Ball Valve
| Feature | Description |
| Machinability | Easy manufacturing |
| Cost Efficiency | Economical solution |
| Maintenance | Simple maintenance |
Typical Applications
Small and medium marine equipment
Auxiliary pipelines
General water systems
Cast Iron Flanged Marine Ball Valve
| Feature | Description |
| Mechanical Strength | Good structural strength |
| Cost Efficiency | Suitable for large-size valves |
| Stability | Reliable performance in water systems |
| Application Range | Large pipeline installations |
Typical Applications
Large cooling water systems
Ballast pipelines
Marine industrial systems
Engine room piping
