Tee, Slip x Slip x Slip 10" x 10" x 3" (C601-623)

The 10" x 10" x 3" PVC Schedule 40 Slip x Slip x Slip Reducing Tee (Part No. C601-623) is a large-diameter, three-port branch fitting that maintains a full 10-inch solvent-weld mainline run while introducing a 3-inch reduced branch outlet at a 90-degree angle — all three ports permanently solvent-welded, all three connections integral to a single fitting body manufactured to the dimensional and performance standards of Schedule 40 PVC. The two run ports are slip (socket) end accepting 10-inch PVC pipe or spigot fittings via solvent-weld connection, while the 3-inch branch socket accepts 3-inch PVC pipe or a spigot fitting — also via solvent-weld — for a permanent, pressure-rated branch joint that becomes a fixed structural element of the piping system from the moment the cement cures.

The 3-inch branch outlet on a 10-inch mainline run represents an approximately 11:1 cross-sectional area reduction — a ratio that places this fitting squarely in the service connection, drain assembly, blow-off riser, and small-diameter lateral category rather than the zone-supply or flow-splitting branch category. At this reduction magnitude, the branch is a controlled-access or permanent service point on a high-volume 10-inch transmission header or supply main, not a flow-balancing branch. The 3-inch downstream pipe size is the design driver — the fitting is specified because 3-inch is the standard pipe size for the blow-off assembly, the drain riser, the chemical feed line, or the service lateral at that point in the system, and introducing that branch directly in the tee body eliminates the separate full-bore tee plus reducer bushing combination that would otherwise be required to achieve a 3-inch branch connection on a 10-inch mainline run.

The C601-623 occupies a specific and important position within the broader Charlotte Pipe C601 reducing tee family across both the 10-inch and 12-inch mainline run sizes. For 10-inch runs, the C601-623 parallels the role of the C601-663 (12" x 12" x 3" branch) in the 12-inch family — serving blow-off assemblies, drain risers, permanent service laterals, and small-diameter branch connections at the 3-inch branch pipe size that is the most commonly specified for these applications on large-diameter mains. The 3-inch branch is large enough to provide adequate flow capacity for blow-off and drain operations, small enough to confirm this is a service connection rather than a zone supply branch, and standard enough that the downstream 3-inch pipe size is compatible with a wide range of valves, elbows, couplings, and termination fittings stocked by every plumbing and industrial supply distributor.

The all-slip branch connection of the C601-623 is its defining distinction from the C602 series FPT-branch tees described elsewhere in Maxx-Supply's catalog. The C602-623 (10" x 10" x 3" FPT tee) provides a 3-inch threaded branch outlet for removable, serviceable device connections — threaded valves, gauges, air release assemblies, and instrumentation that must be installed, removed, or replaced during the operational life of the system. The C601-623 provides a permanent solvent-welded 3-inch branch for piping connections that are built into the system as fixed infrastructure — drain lines, blow-off pipe risers, permanent service laterals, recirculation connections, and branch feed lines where the downstream pipe is a permanent part of the system structure rather than a removable device interface. For applications where branch replaceability is a design requirement, the C602-623 with its FPT branch is the correct specification. Where a permanent solvent-weld 3-inch branch connection on a 10-inch mainline is the design intent, the C601-623 is the single-piece solution.

This Charlotte Pipe SKU — identified by the C601 part number prefix — is a nationally distributed, contractor-recognized fitting supporting consistent availability across supply chains serving municipal water utilities, industrial contractors, and large-scale irrigation installers. Reducing tees at this exact size pairing — 10-inch run with a 3-inch branch — are a specialty stocking item 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 project managers working to schedule on large-diameter system installations where this fitting is specified in the design drawings.

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. The approximately 11:1 cross-sectional area reduction from the 10-inch run to the 3-inch branch produces a substantial increase in branch flow velocity — this fitting is intended for service connections, drain assemblies, blow-off risers, and small-diameter lateral applications rather than zone-supply or flow-balancing branches; confirm branch hydraulic requirements and downstream component sizing with a qualified engineer before system design and commissioning.

Industries & Applications:

• Municipal Water Distribution — Installs on 10-inch transmission and distribution mains to provide a permanent 3-inch solvent-welded branch connection for blow-off assemblies, drain risers, small-diameter service laterals, or permanent branch mains where a fixed 3-inch pipe connection is the design intent and the branch will not be removed or replaced during the operational life of the installation
• Blow-Off & System Drain Assemblies — The most consistently encountered application for a 3-inch branch on a 10-inch main in municipal and industrial piping; blow-off assemblies on large-diameter transmission mains are frequently designed with a 3-inch branch riser leading to an isolation valve and flush outlet, and the permanent solvent-weld branch of the C601-623 provides the mainline tee body for these assemblies where the blow-off piping is installed as a fixed part of the system at initial construction
• Industrial Process Piping — Introduces a permanent 3-inch branch off a 10-inch process supply header for sub-process feed lines, equipment drain connections, recirculation branches, or parallel circuit inlets in chemical, pharmaceutical, manufacturing, and power generation facilities where the branch piping is a permanent structural element of the process system rather than a removable or replaceable device interface
• Pump Station & Mechanical Room Piping — Used on 10-inch pump discharge or suction headers to introduce a permanent 3-inch branch for bypass lines, recirculation connections, drain assemblies, or small-diameter service runs that are solvent-welded into the station piping as fixed components not intended for routine removal or disconnection during normal station operations
• Chemical Feed & Dosing Line Connections — Where a 10-inch process or water main must receive a permanent hard-piped 3-inch chemical feed line connection for chlorination, pH adjustment, corrosion inhibitor dosing, or other treatment chemical injection where the feed line is solvent-welded into the system as fixed distribution infrastructure — the C601-623 provides the mainline branch fitting for that connection without a separate tee-and-reducer assembly; always verify chemical compatibility with the specific fluid and concentration before specification
• Commercial & Agricultural Irrigation — Provides a permanent 3-inch branch connection on a 10-inch irrigation mainline for zone supply laterals, drain assemblies, chemical injection feed lines, or pressure relief branches that are solvent-welded into the irrigation system as permanent components of the site distribution infrastructure during system installation
• Water Treatment & Filtration Plants — Integrates into 10-inch process piping headers and treatment train distribution mains where a permanent 3-inch branch is required for chemical feed inlets, process drain stubs, recirculation connections, or small-diameter distribution branches that are built into the plant piping as fixed infrastructure during original construction or planned capacity expansion
• Aquaculture & Recirculating Systems — Used on 10-inch RAS distribution headers to introduce a permanent 3-inch branch for tank supply laterals, drain collection connections, or treatment system feed lines that are built into the recirculating facility as fixed distribution infrastructure rather than removable or serviceable device interfaces