Create strong, reliable pipe joints for irrigation and water management applications with the Weld-On 721 PVC Solvent Cement. This PVC pipe cement creates a deep fusion between Schedule 40 pipes and fittings with an interference fit up to a 6-inch diameter and Schedule 80 pipes and fittings up to a 4-inch diameter. The blue PVC cement is designed specifically for irrigation, DWV (drain, waste, and vent), pool and spa, plumbing, and non-pressure applications. And thanks to its medium-bodied viscosity and fast relative set time, this PVC solvent cement applies smoothly and sets quickly to facilitate efficient PVC welding.