Used to connect both a washing machine and a dishwasher to a single cold water tap (isolation valve). 
Specifications: It typically has one 3/4" BSP female connection to screw onto the tap and two 3/4" BSP male outlets for the appliance hoses.
Material: Made from durable white plastic or sometimes brass for higher durability.
Best For: Connecting two appliances to one water source when only one is available.