Designed for installation in waste discharge and bilge pumpout systems. When installed, the waste can be pumped directly into a holding tank or, when legal, diverted to an overboard discharge fitting. The valve is supplied with a stainless steel locking ring that allows the lever to be locked in the holding tank position when operating in no-discharge zones. When used for bilge pumping, two separate bilge sections can be emptied with a single pump. All polyester and stainless steel construction will withstand corrosive waste chemicals and bilge water. Self cleaning design provides trouble free operation Molded in flow direction indicator arrows Valve is supplied with three 1-1/2" (38 mm) ports, and an extra 1" (25 mm) straight inlet port for connection to macerating toilets Rotating ports allow flexibility in hose routing to the valve Lift-away top provides for easy maintenance Lock not included