Female Adapter, Slip x FPT PVC Schedule 80 2 1/2" (835-025)

The 2-1/2" PVC Schedule 80 Female Adapter (Slip x FPT) provides a clean, pressure-rated transition between a solvent-welded Schedule 80 PVC pipe run and a 2-1/2" female NPT threaded connection. The slip socket end bonds permanently to 2-1/2" Schedule 80 PVC pipe via solvent cement, while the 2-1/2" FPT end accepts any standard 2-1/2" male NPT fitting, valve body, equipment port, or threaded pipe — creating a reliable bridge between the solvent-weld and threaded worlds in a single, compact fitting body.

The female adapter is the counterpart to the male adapter in the PVC transition fitting family, and the distinction matters in system design. Where a male adapter (MPT x slip) threads into an FPT receiving port, the female adapter accepts a male-threaded component — a threaded pipe nipple, an MPT valve stem, a pump port with external threads, or any 2-1/2" MPT fitting. This makes the 835-025 the correct choice when the downstream threaded component presents male threads rather than a female socket, and when threading a pipe nipple or male-threaded component directly into the adapter is preferred over threading the adapter itself into an external port.

At 2-1/2", female adapters most commonly appear at large-format equipment interfaces — pump bodies with male-threaded ports, threaded pipe nipples entering valve assemblies, equipment connections with external NPT threads, and transition points where a solvent-welded Schedule 80 supply line terminates at a threaded male component. As with male adapters at this size, pairing the 835-025 with a union on the threaded side is standard practice in well-designed systems, preserving the ability to disconnect and service equipment without cutting into the permanent solvent-welded pipe run.

Manufactured to ASTM D2466 standards and listed under NSF/ANSI 14, the 835-025 is molded from dark gray Schedule 80 PVC compound, providing the greater wall thickness, elevated pressure ratings, and broad chemical resistance that Schedule 80 specifications demand. At 2-1/2", this fitting is well-suited for commercial mechanical systems, industrial process piping, pump station infrastructure, and chemical distribution systems rather than typical residential applications.

Specifications:

Industries & Applications:

• Pump Systems & Mechanical Rooms — Terminates a 2-1/2" solvent-welded Schedule 80 supply line at a male-threaded pump port, nipple assembly, or valve stem; commonly installed in tandem with a union downstream to preserve serviceability at the equipment connection without cutting into the permanent pipe run
• Chemical Processing — Transitions large-diameter solvent-welded chemical supply and transfer lines to male-threaded equipment ports, pipe nipples, and component connections on reactors, storage tanks, chemical feed systems, and process vessels in corrosive service environments where PVC's broad chemical resistance is essential
• Industrial Manufacturing — Applied at the interface between permanent solvent-welded process piping and male-threaded equipment connections on filters, heat exchangers, strainer housings, and inline instrumentation requiring a 2-1/2" Schedule 80-rated female threaded termination
• Municipal Water & Wastewater — Used at pump stations, treatment facilities, and distribution system connections where 2-1/2" Schedule 80 PVC supply lines terminate at male-threaded valve bodies, metering equipment nipples, or treatment system ports specified in Schedule 80 for pressure integrity and corrosion resistance
• Commercial Plumbing — Installed in mechanical rooms at large-diameter equipment connections where solvent-welded service piping transitions to male-threaded valves, backflow preventers, and building entry points specified in Schedule 80; the female socket accepts MPT nipples and valve stems directly without requiring an intermediate fitting
• Irrigation & Agricultural — Applied at pump discharge assemblies, filter manifold connections, and mainline valve assemblies where a 2-1/2" solvent-welded supply line transitions to a male-threaded equipment port, nipple, or valve connection in large-scale irrigation infrastructure
• Water Treatment & Filtration — Connects solvent-welded distribution headers to male-threaded inlets on filtration vessels, UV systems, and treatment equipment in large recirculating and water treatment system installations where Schedule 80 chemical resistance and pressure ratings are required at the solvent-weld to threaded transition