These durable MUELLER STREAMLINE 3/4 in. PVC Sch. 40 Pressure MIPT x Slip Adapters (10-Pack) are great for adapting PVC Sch. 40 piping to standard female pipe threads in common irrigation applications. Use for cold-water pressure systems including cold-water lines, shrub beds, plants and flower beds. The PVC Sch. 40 does require a primer before cementing.