The Jabsco Y-Valve, also known as a waste diverter valve, controls the flow of onboard waste by diverting it from marine heads into an onboard holding tank or directly overboard where it is legal to do so. T
Padlock pictured above is not included.
I like the Jabsco unit because of the longer tail pieces that make it easier to double clamp the hose connections. Many Y-valves have very stubby hose barbs. Also, the ability to padlock the valve will keep the Coast Guard happy.