Tee, Slip x Slip x FPT PVC Schedule 40 1" (402-010)

This 1" Schedule 40 PVC Slip × Slip × FPT Tee provides a full-size female-threaded branch outlet off a 1" solvent-cemented PVC run, combining permanent 1" slip socket run ports with a full-size 1" female NPT threaded branch connection in a single fitting. The two 1" slip socket run ports accept standard 1" PVC pipe for solvent cement joining along the through-run, while the 1" FPT branch outlet receives any compatible 1" male-threaded fitting, valve, strainer, pump port, flow meter, or equipment connection at the branch position — without additional adapters, reducing components, or intermediate fittings at the branch face.

The equal-size construction of the 402-010 is the defining characteristic that distinguishes it from the 402-131 (1" × 1" × 3/4" reducing tee, previously written) at the same run size. Both are 1" run Slip × Slip × FPT tees; the branch outlet size is the sole selection criterion between them. The 402-131 presents a reducing 3/4" FPT branch — the correct selection when the downstream threaded component presents a 3/4" male-threaded inlet. The 402-010 presents a full-size 1" FPT branch — the correct selection when the downstream threaded component presents a 1" male-threaded inlet, requiring the full run capacity at the branch rather than a reduced branch size. When the valve, pump port, strainer body, flow meter, or equipment nozzle at the branch position is ported at 1" NPT — the most prevalent standard valve and equipment connection size in commercial and residential systems — the 402-010 is the direct, single-fitting solution.

The mixed Slip × Slip × FPT construction places the 402-010 precisely between the fully solvent-welded and fully threaded tee options at 1" Schedule 40. The all-socket 1" equal tee (401-series at 1" if stocked) serves configurations where all three connections are cemented PVC pipe — correct when the branch continues as a solvent-welded pipe run throughout. Any all-threaded FPT × FPT × FPT tee serves fully threaded assemblies where all three connections receive male-threaded nipples or fittings. The 402-010 occupies the middle position: the slip socket run ports integrate seamlessly into the solvent-welded pipe system, while the 1" FPT branch provides a threaded interface for the downstream threaded component — accomplishing both the branch connection and the socket-to-thread transition in a single fitting body without requiring a separate female adapter at the branch outlet.

This combined function is the core value of the mixed-connection equal tee. A fully solvent-welded 1" equal tee plus a downstream female adapter at the branch outlet achieves the same branch direction, full-size branch capacity, and socket-to-thread transition — but requires two fittings, two branch joints, and additional axial length at the branch position. The 402-010 accomplishes all three functions in a single body with two slip run joints and a single FPT branch, preserving assembly compactness and reducing fitting count at every position in a 1" Schedule 40 system where a full-size threaded branch connection is required off the solvent-welded main.

The 1" FPT branch outlet of the 402-010 gives it the broadest downstream application reach of the 402-series 1" run entries. One-inch NPT is the standard connection size across the widest range of standard commercial and residential components — 1" NPT ball valves, gate valves, check valves, strainer bodies, pump discharge and suction ports, flow meters, backflow preventers, and equipment nozzles appear throughout residential irrigation, pool and spa, commercial plumbing, and light industrial Schedule 40 systems. Wherever any of these 1"-ported components must branch off a 1" cemented main, the 402-010 provides the direct, adapter-free connection.

As with all 402-series mixed-connection fittings, the slip run ports form permanent solvent-cemented joints with the 1" PVC main while the 1" FPT branch retains the inherent serviceability of a threaded connection. The branch component — valve body, pump port adapter, strainer, or flow meter — can be removed and replaced without cutting into the cemented pipe system, preserving full maintenance access at the branch position throughout the installation's service life.

Manufactured in white Schedule 40 PVC, this tee delivers reliable performance across residential, commercial, and light industrial piping applications. PVC's resistance to acids, bases, salts, chlorine, and common process fluids provides long service life where metal tees would corrode or scale. NSF/ANSI 61 and NSF/ANSI 14 listings confirm suitability for potable water contact.

Rated to 450 psi at 73°F (governed by the 1" slip run ports), this fitting handles standard pressure service across residential and commercial irrigation, pool and spa, plumbing, water treatment, and light industrial applications. For the slip socket run ports, clean and dry both pipe ends and socket interiors before application. Apply purple PVC primer to all mating surfaces, then apply a uniform coat of Schedule 40 PVC solvent cement to both the pipe end and socket interior at each run port joint before inserting. Insert each pipe with a slight quarter-turn twist and hold firmly for 30 seconds. Stagger the two run port joints where possible and allow full cure time per the cement manufacturer's guidelines before pressurizing. Apply PTFE tape or compatible thread sealant to all male threads engaging the 1" FPT branch before installing downstream components. Hand-tighten plus one to two turns — do not over-torque PVC female threads at the branch. Apply published pressure derating factors for service temperatures above 73°F.

Specifications:

Industries & Applications:

• Commercial & Residential Irrigation — Taps a full-size 1" female-threaded branch off a 1" solvent-cemented Schedule 40 PVC lateral or submain at primary valve station positions where 1" MPT-ported ball valves, gate valves, strainer bodies, flow control valves, and backflow preventers must branch off the 1" main — the defining application for the 402-010 given the prevalence of 1" NPT-ported irrigation control and metering components and the common 1" lateral pipe size across residential and commercial irrigation systems
• Pump Station & Equipment Branch Connections — Provides a full-size 1" female-threaded branch off a 1" solvent-cemented Schedule 40 PVC pump discharge or suction distribution run at pump port connections, strainer body branches, flow meter inlets, and primary equipment nozzle branches in residential and commercial pump station assemblies where 1"-ported equipment components must branch off the 1" cemented main without an intermediate adapter at the branch face
• Pool, Spa & Aquaculture — Taps a full-size 1" female-threaded branch off a 1" solvent-cemented Schedule 40 PVC recirculation main or primary equipment header at pump suction and discharge port connections, filter head inlet branches, primary valve body connections, and major equipment supply branches in residential and commercial pool and spa installations where full-capacity 1" NPT-ported equipment components branch off the 1" primary piping
• Commercial Plumbing — Provides a full-size 1" female-threaded branch off a 1" solvent-welded Schedule 40 PVC water supply main at shutoff valve connections, pressure zone valve bodies, backflow preventer inlet connections, and primary equipment supply branches in commercial building water distribution and mechanical room systems where 1" NPT-ported components must interface with the 1" cemented main at full branch capacity
• Water & Wastewater Treatment — Installs a full-size 1" FPT branch off a 1" solvent-welded Schedule 40 PVC distribution header at primary valve connections, strainer body branches, pump discharge connections, flow meter positions, and primary equipment interfaces in light-duty municipal and industrial water treatment facilities where full-capacity 1" NPT-ported downstream components branch off the 1" cemented distribution main
• Light Industrial Process Piping — Provides a full-size 1" female-threaded branch off a 1" solvent-welded Schedule 40 PVC process distribution header at primary valve connections, strainer body inlets, flow meter branches, and primary equipment nozzle connections in light industrial and chemical handling systems where full-capacity 1" MPT-ported process components interface with the 1" cemented main in a single compact mixed-connection fitting
• Site Utilities & Primary Distribution — Taps a full-size 1" female-threaded primary valve, meter, or equipment connection off a 1" solvent-welded Schedule 40 PVC site utility water distribution main at primary isolation valve branches, major equipment supply positions, and primary distribution takeoffs throughout commercial site water distribution systems where full-capacity 1" NPT-ported components branch off the 1" primary distribution piping