Hayward YS10300TU 3-Inch Threaded True Union PVC Y-Strainer with FPM O-ring Seals True Union Y-strainer comes with FPM O-ring seals Made of PVC plastic material, so that it will never rust or corrode Protects piping system components from damage caused by dirt or debris in the process media Can be mounted vertical or horizontal position, simplifying piping system layout Measures 3-inch threaded end connection