For over 60 years, Pres-Vac Engineering has been supplying pressure/vacuum valves and venting equipment that help prevent car ... go 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: - High velocity pressure vacuum valves - Inline pressure vacuum valves - Pressure vacuum valves for PV breakers - Deflagration and detonation arresters - Air vent heads - Portable gas freeing devices - VOCON inline PLC controlled mast riser breathing valve for VOC controlling and reporting - Mast riser flame arresters - Gas freeing covers Our customers include all of the leading tanker fleets in the world. We work with ship owners, shipyards, naval architects and other partners on all continents. We have the widest and most comprehensive range of high-velocity pressure/vacuum valves available worldwide. Today Pres-Vac Engineering is part of G&O Maritime Group which has diversified into supplying all segments of the maritime and offshore industry on a global scale. Our business portfolio includes world leading maritime suppliers Gertsen & Olufsen, Atlas Incinerators and Heco International. For more information on the group and products, please visit: www.gomaritimegroup.com read more