Oatey® PVC Fast Set Heavy Duty Gray Cement is recommended for DWV, potable water and irrigation applications. Made to quickly install irrigation pipe and fittings, it builds up to fill gaps in large diameter pipe and loose fitting joints, and is easy to apply. This gray, heavy duty, fast set cement can be used to solvent weld all schedules and classes of PVC pipe and fittings with interference fit up to 18 in. diameter for non-pressure and 12 in. diameter for pressure pipes. Oatey products have earned the trust of plumbing professionals for over 100 years.