This VETUS separator collects and retains oil and grease from the bilge water. The filter element is replaceable and has a capacity of 320gm, which is the average quantity of oil in 8,000lt of bilge water. It will remove 95% of oil in the bilge water, with a maximum contamination level of 300mg/l (p.p.m.) The bilge pump to be used in combination may have a maximum capacity of 25lt/ minute.The separator is designed for 19mm diameter hose connections.