For over 60 years, Pres-Vac Engineering has been supplying pressure/vacuum valves and venting equipment that help prevent cargo related accidents on board of tank ships to the marine industry. We are the world´s leading supplier of high velocity pressure/vacuum (P/V) valves. Our customers include all the leading tanker fleets in the world. We work with ship owners, shipyards, naval architects and other partners on all continents, and supply the widest range of high-velocity pressure/vacuum valves available worldwide. Today Pres-Vac Engineering is part of G&O Maritime Group which supplies all segments of the maritime and offshore industry on a global scale.