Heavy duty gray cement for use on all schedules and classes PVC pipe and fittings up to 12" diameter with interference fit, up to 18" for non-pressure. Lo-V.O.C. solvent cement meets California South Coast Air Quality Management District 1168/316A or BAAQMD Method 40 and various environmental requirements. Thick formula fills gaps in large diameter pipe and loose fitting joints. Recommended for potable water, pressure pipe, conduit and DWV.