Pres-Vac Engineering
Vacuum pressure control valves and venting systems
We provide valves and venting equipment to ensure maximum safety in the offshore and tanker shipping industries. Our solutions protect against unintended overpressure or vacuum while simultaneously protecting against fire risk and ensuring that emissions from the cargo are kept to a minimum.
Engineered safety for tankers, offshore and oil & gas
Pres-Vac Engineering is a global leader in vacuum pressure valves and vacuum pressure control valves for the maritime and offshore industries.
Our certified venting systems protect against unintended overpressure, vacuum conditions and fire risk – ensuring reliable operation across tankers, FPSOs, chemical carriers and oil & gas platforms.
By minimising emissions and maintaining cargo integrity, our solutions support compliance with IMO, ISO and ATEX standards – even in the most demanding environments.
Explore our full range of marine and offshore pressure/vacuum safety solutions.
Pres-Vac Engineering
For over 70 years, Pres-Vac Engineering has pioneered the design and production of vacuum pressure valves and vacuum pressure control valves for the global maritime, offshore, and oil & gas industries.
As the world’s leading supplier of high velocity pressure/vacuum valves, our solutions are trusted on more than 50% of all tanker vessels worldwide—ensuring safe venting, emission control, and compliance with international standards like IMO and ISO 15364.
From tankers to FPSOs and chemical carriers, our venting systems are engineered to protect people, cargo, and the environment in even the most demanding conditions.
Ensuring safe and compliant marine venting operations
Pressure/vacuum valves play a critical role in ensuring the safe and efficient operation of your vessel. When controlling vacuum and pressure levels in your ship’s venting system, selecting the right valve is essential.
At Pres-Vac Engineering, we specialise in providing innovative vacuum pressure control valves and high-velocity venting solutions that meet the most rigorous industry standards, including IMO and ISO requirements.
Our products are designed to ensure maximum safety, operational reliability, and emission control—giving you peace of mind that your vessel is equipped with the most advanced marine venting technology available.
A wide range of pressure /vacuum valves
Pres-Vac Engineering offers a comprehensive portfolio of pressure/vacuum valves, including solutions for tankers, FPSOs, and offshore platforms. Each vacuum pressure valve is engineered with precision and built for long-term durability—even in the most extreme marine environments.
Our valve designs ensure stable and accurate vacuum and pressure control, delivering non-hammering performance and minimal emissions when it matters most.
Explore our full range of certified venting solution
The function of pressure relief valves
The function of pressure relief valves is to protect a system from overpressure conditions that could cause damage or failure. When pressure within the venting system reaches set point, the valve opens and releases excess pressure to the environment, preventing the system from becoming overpressurized. This helps to ensure the safety and reliability of the system.
The function of vacuum valves
The vacuum valve function is to enable the release of air or gas as needed to maintain the desired pressure. Vacuum in the venting system is to be avoided wherever possible. Vacuum valves ensure a fast compensation in any vacuum situation, in order to avoid any damage to the cargo, ship or crew.
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Part of G&O Maritime Group
Pres-Vac Engineering was established in 1952 but became part of G&O Maritime Group in 2016. Since then, Pres-Vac Engineering has been a proud representative of G&O Maritime Group’s Tank Management division, assisting the group to strive toward a safer and greener future for the Maritime industry with their valves and venting equipment.
We offer a range of pressure/vacuum valves for venting systems designed specifically for the marine industry, so you can regulate the flow of gases on board ships. Our ship valves are built to withstand harsh marine environments, ensuring optimal safety and efficiency of the vessel’s operations.
Sustainability in
Pres-Vac Engineering
It is important to us to support our customers during the green transition of the maritime industry.