Sometimes, notably in the case of sailing yachts, the exhaust line is so long that an extra large waterlock is needed to prevent the large volume of water in the line from running back into the engine once it has been stopped. VETUS waterlock type LSG is the ideal solution for boats sailing in rough waters, without the engine running. To simplify installation both the 75mm inlet and outlet stubs will rotate through 360 degrees. They are also fitted with a drain plug for winter storage and an integral check valve. It is possible to fit a sensor for an exhaust temperature alarm into the inlet hose connection of the LSG. Capacity: 17 litres