Tee, Slip x Slip x FPT 10" x 10" x 3" (C602-623)

The 10" x 10" x 3" PVC Schedule 40 Slip x Slip x FPT Tee (Part No. C602-623) is a large-diameter, three-port branch fitting that maintains a full 10-inch solvent-weld mainline run while introducing a 3-inch female pipe thread (FPT) branch outlet — delivering the permanence and structural integrity of a solvent-welded main run alongside the installation flexibility and field serviceability of a threaded branch connection in a single, compact fitting body. The two run ports are slip (socket) configuration, accepting 10-inch PVC pipe or spigot fittings via solvent-weld connection, while the 3-inch FPT branch accepts any standard male pipe thread (MPT) fitting, valve, instrument, or threaded pipe section directly — without solvent welding, additional adapters, or transition fittings at the branch point.

The threaded branch outlet is the specification driver for this fitting — the feature that differentiates it from an all-slip tee and defines the installation scenarios it is built to serve. In large-diameter PVC piping systems, the mainline run is typically a permanent, solvent-welded structure not intended for disassembly. The branch connection, however, routinely needs to interface with components that are removable, adjustable, or periodically replaced — threaded valves, pressure gauges, air and vacuum release assemblies, blow-off connections, chemical injection quills, flow meters, and instrumentation devices of all types. A FPT branch outlet accepts any of these male-threaded components directly, without the additional threaded adapter that would be required between an all-slip tee body and a threaded branch device.

The specific pairing of a 10-inch slip run with a 3-inch FPT branch serves a distinct application profile from the 4-inch FPT variant (C602-624). The 3-inch threaded outlet is the more commonly specified branch size for instrumentation-heavy and service-connection applications — pressure sensing assemblies, chemical injection systems, sample taps, air release valves, small-diameter blow-off risers, and service laterals where a 3-inch threaded connection is the standard interface for the branch device. The step-down from the 10-inch mainline to the 3-inch branch — a more than 10:1 cross-sectional area reduction — means this fitting is decisively not a flow-balancing branch but a service, instrument, or controlled-access connection point on a high-volume transmission or supply main. The branch flow rate is inherently small relative to the mainline, and the threaded connection is selected precisely because the branch component at that endpoint is a discrete device rather than a continuation of the pressure piping run.

This Charlotte Pipe SKU — identified by the C602 part number prefix — is a nationally distributed, contractor-recognized fitting that supports consistent availability across supply chains serving municipal water utilities, industrial contractors, and large-scale irrigation installers. Mixed connection type tees at large diameters are a specialty stocking category that many local distributors carry inconsistently or not at all — making a reliable online source with confirmed availability a meaningful procurement advantage for contractors and engineers working to schedule on large-diameter system installations.

Manufactured from virgin PVC compound to ASTM D2466 standards, this tee delivers the corrosion resistance, chemical compatibility, and long-term service life that make Schedule 40 PVC the standard material across water, wastewater, irrigation, and industrial piping environments. NSF/ANSI 61 certification confirms suitability for potable water contact, extending its application range to municipal water distribution, water treatment infrastructure, and food-adjacent process piping in addition to its broad industrial and agricultural markets.

Specifications:

Note: Pressure ratings decrease with increasing pipe diameter. Always apply appropriate thread sealant — PTFE tape or pipe dope rated for PVC — to the male threads before assembly on the FPT branch port. Do not over-torque threaded connections on PVC; hand-tight plus 1–2 turns with a strap wrench is the recommended installation practice to avoid cracking the female thread socket.

Industries & Applications:

• Municipal Water Distribution — Installs on 10-inch transmission and distribution mains to provide a 3-inch threaded branch connection for blow-off assemblies, air and vacuum release valves, small-diameter service laterals, or pressure sensing ports that require a removable, serviceable threaded interface without disturbing the solvent-welded mainline
• Pump Station & Mechanical Room Piping — The slip-run, FPT-branch configuration is well-suited to pump station discharge headers and mechanical room manifolds where the mainline is permanently solvent-welded and the 3-inch branch must accommodate threaded pressure gauges, instrumentation assemblies, bypass valves, or drain connections that will be serviced or replaced over the system's operational life
• Industrial Process Piping — Introduces a 3-inch threaded branch off a 10-inch process supply header for chemical injection quills, sampling valve assemblies, pressure relief connections, drain points, or instrumentation taps in chemical, pharmaceutical, manufacturing, and power generation facilities where threaded branch connections are preferred for their direct compatibility with standard threaded devices and field replaceability
• Chemical Dosing & Injection Systems — The 3-inch FPT branch outlet directly accepts standard threaded chemical injection assemblies, dosing valve bodies, and metering connections — eliminating the threaded adapter fitting that would otherwise be required between a slip tee and the injection device; the smaller 3-inch branch size is well-matched to the controlled, metered flow rates characteristic of chemical dosing applications; always verify chemical compatibility with the specific fluid and concentration before specification
• Air Release & Vacuum Break Assemblies — Large-diameter transmission mains routinely require air release and vacuum break valves at high points in the piping profile; the 3-inch FPT branch is a standard connection size for the threaded inlet of combination air release valves and vacuum breakers installed on 10-inch mains, making this tee a natural specification for that application
• Commercial & Agricultural Irrigation — Provides a 3-inch threaded branch connection on a 10-inch irrigation mainline for threaded valve bodies, fertigation injection assemblies, pressure regulation equipment, or small-diameter zone control connections that require removability for seasonal maintenance, adjustment, or system reconfiguration
• Water Treatment & Filtration Plants — Integrates into 10-inch process piping headers and distribution manifolds where a 3-inch threaded branch is required for sample taps, chemical feed inlets, instrumentation connections, or removable process devices in treatment train piping that must accommodate periodic equipment access, calibration, or replacement
• Aquaculture & Recirculating Systems — Provides a threaded branch connection on 10-inch RAS distribution headers for removable flow control valves, water quality monitoring equipment, tank isolation assemblies, or drain connections that require periodic maintenance access or seasonal reconfiguration without disturbing the solvent-welded mainline structure