Marine & Off-shore
API Certified
Designed & tested as per API Standards
ISO Certified
Designed & tested as per API Standards
ANSI Certified
Designed & tested as per API Standards
CE Compliant
European directives & PDE Compliance
API Certified
Designed & tested as per API Standards
ISO Certified
Designed & tested as per API Standards
ANSI Certified
Designed & tested as per ANSI standards.
CE Compliant
European directives & PDE Compliance
Valves for the Marine & Offshore Industry
Marine vessels and offshore installations depend on valves to manage seawater, ballast water, fuel, cooling water, firewater and other onboard or platform services. These valves function in the presence of salt water, vibration, limited space for installation and varying operating conditions. ValvesOnly Europe provides valve solutions for vessels, offshore platforms, terminals and supporting marine infrastructure.
Marine and Offshore Valve Applications
Valves are installed across essential marine and offshore piping systems, including:
- Ballast and Bilge Systems – Isolation and flow management during ballast, drainage and dewatering operations
- Sea Chest and Cooling Systems – Control of seawater supplied to engines, generators and heat exchangers
- Firewater and Deluge Systems – Isolation and control across firefighting and offshore protection networks
- Fuel Oil Systems – Management of compatible fuel supply, transfer and storage lines
- Cargo Transfer Systems – Control of liquid or gas cargo during loading and unloading
- Tank Cleaning and Inert-Gas Systems – Isolation of cleaning media and protective gas lines
- Offshore Process Systems – Control of produced water, injection water, chemicals and compatible process fluids
- Marine Terminals – Isolation of transfer lines, loading systems and supporting utilities
Valve Designs for Marine Applications in Europe
The valve type depends on the fluid, pressure, temperature, installation area and required function.
- Butterfly Valve – Compact isolation for large seawater, ballast, cooling and firewater lines
- Ball Valve – Fast quarter-turn shut-off for fuel, water, gas and offshore process services
- Gate Valve – Low-restriction isolation for suitable water, fuel and utility pipelines
- Globe Valve – Throttling and flow adjustment in fuel, water and steam services
- Check Valve – Prevents reverse flow through pumps, compressors and circulation systems
- Plug Valve – Quarter-turn isolation for compatible fuel and process fluids
- Control Valve – Regulates flow, pressure or temperature in automated systems
- Safety Valve – Protects applicable marine and offshore equipment against overpressure
- Cryogenic Valve – Controls LNG, LPG and other specified low-temperature fluids
Seawater and Offshore Service Conditions
Marine valve selection should consider:
- Internal and External Corrosion – Chlorides, humidity and salt-laden air affect wetted components, fasteners and actuators
- Galvanic Compatibility – Dissimilar metals must be selected carefully to limit galvanic corrosion
- Vibration and Vessel Movement – Valve, actuator and mounting arrangements must remain secure during operation
- Remote or Emergency Operation – Critical valves may require position indication, remote actuation or fail-safe closure
- Fire and Low-Temperature Exposure – Fuel, cargo and gas systems may require fire-tested or cryogenic construction
Materials for Marine and Offshore Valves
Materials depend on seawater exposure, process fluid, pressure, temperature and corrosion allowance.
- Carbon Steel – Used for compatible fuel, utility and offshore process services with suitable external protection
- Stainless Steel 316 – Suitable for selected marine water, utility and corrosive services
- Duplex Stainless Steel – Provides improved resistance in seawater and chloride-bearing environments
- Super Duplex Stainless Steel – Includes F53, F55 and F44 grades for demanding offshore and seawater applications
- Bronze and Aluminium Bronze – Commonly selected for seawater and marine utility systems
- Titanium – Used for specific highly corrosive seawater applications
- Special Alloys – Hastelloy or Alloy 20 for particular aggressive chemical services
Marine & Offshore Valve Technical Details
- Size and Pressure: Selected according to pipeline size, flow capacity, temperature and design pressure
- Operation: Manual, gear-operated, electric, pneumatic, hydraulic or remotely actuated
- End Connections: Flanged, wafer, lugged, threaded, socket-weld or butt-weld
- Design Standards: ASME B16.34, API 6D, API 600, API 608, API 609 or applicable EN standards, depending on valve type
- Testing: API 598, ISO 5208 or EN 12266-1 for applicable shell-pressure and seat-leakage testing
- Project Requirements: Fire-safe design, anti-static construction, low-temperature testing, position indication or fail-safe operation where specified
- Approvals: Classification-society and relevant IMO or SOLAS project requirements where applicable
As a marine and offshore valve manufacturer, ValvesOnly Europe provides marine and offshore valve configurations matched to the service fluid, pressure, material, connection, actuation and project requirements.
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