Spears PVC Swing Joints Spears® Swing Joint Riser Assemblies are precision engineered for use in turf and landscape irrigation applications. Molded to a strong Schedule 80+ design from high quality PVC, Spears® Swing Joint Riser Assemblies off er full 360° adjustment on three planes, and are available in a variety of inlet/outlet combinations in 1", 1-1/4" and 1-1/2" ASTM IPS; 1", 1-1/4" and 1-1/2" BSP Th readed; 32mm, 40mm and 50mm DIN; and 25mm, 32mm, and 40mm JIS.