Oatey PVC Heavy Duty Clear Cement is formulated for use on all schedules and classes PVC pipe and fitting up to 12 inches in diameter with interference fit, up to 18 inches for non-pressure. Lo-V.O.C. Solvent Cement meets California South Coast Air Quality Management District (SCAQMD) 1168/316A or BAAQMD Method 40 and various environmental requirements. Thick formula fills gaps in large diameter pipe and loose fitting joints. Meets ASTM D2564. Recommended for potable water, pressure pipe, conduit and DWV.