Fibropools 3 way valve with 1 1/2" female threads . Designed to be used in all pool applications. It can be taken apart very easily, for cleaning the debris or annual greasing of the gasket. Threads are designed for 1 1/2" male fittings, no other size will fit on the outside. the orifice inside is 1 1/8" in size, so, it is not suitable for 2" plumbing.