The 2 inch 5 port 3-quarter inch Socket Water Manifold is commonly used with 2 inch rigid pipe and 2 inch flexible rigid pipe and three-quarter inch piping.
Best to use a plumbing cleaner then pipe cement to assemble. Pipework pushes inside this part at the female end and at the male end it pushes into a female socket.
Used when the piping for the water jets is supplied in 3/4 inch flexible hose. You would glue the 3/4 inch flexible hose inside the fitting.
2 inch S x 3/4 inch (5) S