Y-valve for marine toilets and septic tanks, manufactured of corrosion resistant ABS and stainless steel structure. The valve contains two ports, which allows you to select whether to empty the toilet waste overboard or to transfer it to the septic tank for later emptying. Lockable, for areas in which emptying waste water overboard is not permitted. Fulfils the requirements for valves used in an ISO 8099:2000 approved system. Hose connection 38 mm.