This National Diversified Sales Inc. (NDS) U-3000-S is a 3-inch Schedule 80 PVC union slip fitting. Constructed from gray polyvinyl chloride (PVC), it features a heavy-wall Schedule 80 design, providing enhanced durability and higher pressure resistance compared to Schedule 40 fittings. The union is engineered to connect two sections of pipe, facilitating convenient disassembly and maintenance within a piping system without requiring the pipes to be cut. It utilizes slip (solvent weld) connections on both ends for a permanent, leak-resistant joint. An EPDM O-ring within the union ensures a tight seal. Suitable for a variety of applications including irrigation, plumbing, and pool/spa systems, this fitting is ideal for pressurized cold water lines with a maximum operating temperature of 140°F and a pressure rating of 150 PSI at 73°F. It is NSF/ANSI 61+372 listed for potable water applications and complies with ASTM D1784, D2467, and D2464 standard