Applications
FPSO / FSO
Robust Pressure/Vacuum Valve Solutions for Offshore Production Units
Floating Production Storage and Offloading units (FPSOs) and Floating Storage and Offloading units (FSOs) operate in some of the most demanding environments in the maritime and offshore industry. Continuous production, hydrocarbon blanketing systems, harsh weather exposure, and limited accessibility place exceptional requirements on tank protection systems.
At Pres-Vac Engineering, we deliver high-performance pressure vacuum valves end of line as well as inline and flame arresting solutions engineered specifically for offshore installations – where safety, uptime, and regulatory compliance are critical.
Offshore Tank Protection Under Continuous Operation
Unlike conventional tankers, FPSOs and FSOs:
- Operate continuously for years without dry docking
- Store crude oil under hydrocarbon blanketing systems
- Experience dynamic environmental conditions
- Have limited access for maintenance
- Must meet both marine and offshore regulatory frameworks
- Extensive Documentation
- Extensive testing of quality assurance / control
- Optional monitoring (proximity switch)
In this environment, pressure stability is essential. Any failure in tank venting systems can impact production, safety and environmental compliance. Our pressure vacuum safety valves are designed to provide stable, non-oscillating operation over extended periods with minimal maintenance requirements.
High Velocity Pressure/Vacuum Valves for Offshore Storage
Pres-Vac high velocity valves ensure:
- Accurate pressure control without excessive overpressure peaks
- Reduced blowdown pressure
- Controlled vapour release
- Stable operation on long and complex vent piping systems
- Certified flame transmission protection
- Controlled breather system built in
- Settings from 5kpa and upwards
Our valves are tested according to ISO 16852 and relevant IMO standards, including endurance burn testing and flame transmission testing. Certification for explosion groups IIA and IIB ensures suitability for hydrocarbon vapours.
Designed for Hydrocarbon Blanketing Systems
FPSOs typically use hydrocarbon gas blanketing instead of traditional inert gas systems, which places additional demands on flame arresting capability, leak tightness, explosion group certification, and reliable sealing performance. Our valves are tested according to ISO 16852 and relevant IMO standards, including endurance burn testing and flame transmission testing. Certification for explosion groups IIA and IIB ensures suitability for hydrocarbon vapours.
Engineered for Long Vent Pipes and Complex Layouts
Offshore topside design often results in long vent pipe runs, complex routing, and significant pressure drop considerations. Our magnet-controlled weight-loaded valve design allows performance adjustment according to pipe length and diameter, ensuring non-oscillating behaviour, stable opening pressure, reduced emission during blowdown, and reliable vacuum compensation. Each project is evaluated based on pipe length, operating pressure, and production profile.
Compliance with Offshore and Marine Standards
FPSO and FSO installations must comply with a combination of:
- IMO regulations
- Classification society requirements
- ISO 15364 and ISO 16852
- Offshore safety standards
- ATEX (where applicable)
Our Type Approval Certificates clearly document:
- Certified vent pipe lengths
- Explosion group compliance
- Flame transmission testing
- Endurance burn testing
- Leakage tightness
Full documentation ensures smooth approval during newbuild projects and offshore conversions.
Why Choose Pres-Vac for FPSO / FSO Projects
✔ Stable pressure control under continuous operation
✔ Certified flame arresting performance
✔ Adjustable performance for long vent systems
✔ Reduced emissions and cargo vapour loss
✔ Minimal maintenance requirements
✔ Documented compliance with international standards
We collaborate closely with offshore EPC contractors, yards, operators and classification societies to deliver project-specific venting solutions.
Secure Your Offshore Tank Protection System
Whether for a new FPSO build, FSO conversion or life extension project, Pres-Vac Engineering provides certified pressure vacuum valves engineered for offshore reliability.
Contact our sales and regulatory team to discuss your offshore installation requirements and ensure safe, compliant and long-lasting performance.