PVC Female Adapter, 3"

For larger plumbing systems, this American Granby 3" PVC female adapter makes the jump from a glued slip line to a threaded connection. It combines a slip socket with a 3" FIPT (female iron pipe thread) outlet, so you cement the slip end to 3" pipe and thread a male-threaded fitting or device into the FIPT side, gaining a serviceable threaded port on a large-diameter run.

A robust transition at 3 inches

At 3", this adapter typically serves higher-flow distribution mains, large filtration skids, or commercial-scale water-treatment plumbing where bigger pipe diameters are required to carry the volume. The female-threaded outlet provides a serviceable, removable connection point, valuable where equipment may need to be disconnected for maintenance, while the slip end forms a permanent solvent-weld bond to the pipe. That combination matters at this scale, where cutting and re-gluing large pipe to service a connection would be a major undertaking.

• Connection: slip socket x 3" FIPT
• Fitting type: female adapter
• Material: Schedule 40 PVC
• Transitions cemented PVC to a female threaded port
• Solvent-weld one end, thread the other
• Approximate weight: 0.66 lb each

Install by priming and solvent-welding the slip socket onto clean, square-cut, deburred 3" pipe; large-diameter joints call for ample cement coverage and prompt assembly so the bond seats before the cement begins to cure. For the threaded side, wrap the male threads of your mating component with PTFE tape or apply pipe sealant, then thread it into the FIPT outlet and hand-tighten with a measured final turn to avoid stressing the plastic. PVC resists corrosion, scaling, and chlorinated water, making this American Granby adapter a robust transition fitting for large treated-water systems that would otherwise rely on heavier, corrosion-prone metal parts.

Because PVC will not corrode internally, the inside diameter stays clean and full-bore for the life of the line, preserving the flow and pressure that metal pipe loses to scale and rust over the years. That matters in water-treatment plumbing, where consistent flow keeps softeners and filters operating within their design range. Pair this fitting with quality pipe, proper primer and cement, and clean, square cuts, and it will deliver dependable, leak-free service for the long term.