With a brass ball valve with single-lever control you can shut off every hose connection quickly and securely. Various sizes.

With this Y-valve you have the option of ducting toilet discharge either straight over-board or into the holding tank. Simple one-handed change-over. 1 1/2 connection (38 mm)....

2-way valve for selective disposal in the collection tank or overboard. The hose connections are infinitely rotatable. Includes 25 mm and 38 mm straight feed. Thru-deck or...