Tee, Slip x Slip x Slip PVC Schedule 40 1-1/2" (401-015)

This 1-1/2" Schedule 40 PVC Equal Tee provides a full-size, solvent-cemented branch outlet off a 1-1/2" PVC main run, with all three slip socket ends accepting standard 1-1/2" PVC pipe for solvent cement joining. The two run ports maintain the straight-through flow path of the main, while the branch outlet presents an equal 1-1/2" socket perpendicular to the run — delivering the same full pipe diameter at the branch as at the run, with no size reduction at the tee body.

The equal tee is the foundational branch fitting in any PVC piping system. At 1-1/2" Schedule 40, the 401-015 serves the full range of branch applications where the branch flow requirement matches the run capacity across a pipe size that is one of the most prevalent in residential and commercial Schedule 40 systems. Pool and spa recirculation headers feeding parallel equipment circuits, secondary distribution mains splitting to multiple zone supply branches, irrigation submain tees at lateral takeoff positions, pump suction and discharge manifold branch connections, and commercial plumbing secondary branch mains all represent configurations where a full-size 1-1/2" branch off a 1-1/2" run is the correct specification.

The 401-015 is the all-socket equal tee for fully solvent-welded systems — the correct selection wherever all three connections at the tee body are plain PVC pipe ends joined by solvent cement. This distinguishes it from two related series at 1-1/2". The 402-series Slip × Slip × FPT tee (previously written at 2") serves configurations where both run ports are cemented PVC pipe but the branch requires a female-threaded outlet for a downstream valve, strainer, or equipment connection; the equivalent 402-series entry at 1-1/2" would apply when the branch component is threaded. The Schedule 80 counterpart, the 801-series (previously written at 801-007 at 3/4" and 801-010 at 1"), serves the same all-socket equal tee function in dark gray Schedule 80 PVC at higher pressure ratings. The 401-015 is the correct fitting when the system is Schedule 40, all three connections are solvent-welded PVC pipe, and the branch requires the full 1-1/2" capacity of the run.

At 1-1/2", the 401-015 is the Schedule 40 all-socket tee at a pipe size where the equal tee appears with particularly high frequency. The 1-1/2" pipe size bridges the gap between the smaller branch supply sizes (1", 3/4") and the larger primary distribution sizes (2", 2-1/2") in residential and commercial piping layouts — appearing at every point where the distribution hierarchy splits to secondary supply branches, where pool and spa recirculation headers divide to parallel equipment circuits, where irrigation submains branch to multiple zone laterals, and where pump suction manifolds divide to parallel equipment inlets. At each of these positions in a fully solvent-welded Schedule 40 system where the branch requires the full 1-1/2" capacity, the 401-015 is the direct and most efficient single-fitting solution.

The all-socket construction of the 401-015 produces a three-joint, fully solvent-cemented assembly at the tee position — both run ports and the branch outlet cemented to 1-1/2" PVC pipe. This all-socket configuration integrates seamlessly into solvent-welded Schedule 40 systems, maintaining pressure rating consistency through every joint at the tee without introducing threaded interfaces that might require periodic inspection or re-torquing. The result is a permanent, monolithic branch point that becomes an integral structural component of the piping system once cured.

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 and utility fluids provides long service life in environments where metal tees would corrode, scale, or introduce contamination into the fluid stream. NSF/ANSI 61 and NSF/ANSI 14 listings confirm suitability for potable water contact.

Rated to 280 psi at 73°F, this fitting handles standard pressure service across residential and commercial irrigation, pool and spa, plumbing, water treatment, and light industrial applications at 1-1/2". Three separate solvent-cemented joints must be made at installation. Clean and dry each pipe end and socket interior before application. Apply purple PVC primer to all mating surfaces — both run port sockets, the branch socket, and all three corresponding pipe ends. Apply a uniform coat of Schedule 40 PVC solvent cement to both the pipe end and socket interior at each of the three joints before inserting. Insert each pipe with a slight quarter-turn twist and hold firmly for 30 seconds to prevent pushback. Stagger the three joints where possible and allow full cure time per the cement manufacturer's temperature and humidity guidelines before pressurizing. Apply published pressure derating factors for service temperatures above 73°F.

Specifications:

Industries & Applications:

• Pool, Spa & Aquaculture — Branches a full-size 1-1/2" supply line off a 1-1/2" Schedule 40 PVC recirculation main, equipment header, or filtration return line at pump connection splits, equipment distribution branch points, heater bypass branches, and parallel circuit distribution positions in residential and commercial pool, spa, and aquatic facility installations — one of the defining and highest-frequency applications for the 401-015 given the prevalence of 1-1/2" as the standard pipe size in residential and light commercial pool and spa recirculation systems
• Commercial & Residential Irrigation — Provides a full-size 1-1/2" solvent-cemented branch outlet off a 1-1/2" Schedule 40 PVC submain or primary lateral at zone supply splits, lateral takeoff positions, filter station branch connections, and secondary distribution branch points in residential and commercial irrigation systems where the 1-1/2" branch must carry the full submain flow capacity at the takeoff position
• Commercial Plumbing — Branches a full-size 1-1/2" supply line off a 1-1/2" Schedule 40 PVC secondary water supply main at fixture branch connections, equipment feed splits, secondary zone supply takeoffs, and manifold distribution branches in commercial building water distribution and mechanical room systems where Schedule 40 pressure performance is appropriate at the all-socket branch connection
• Pump Station & Equipment Supply Routing — Provides a full-size 1-1/2" branch point on pump suction manifolds, pump discharge headers, booster pump distribution assemblies, and equipment supply tees in residential and commercial pump station and mechanical equipment systems where the 1-1/2" pipe size serves the primary pump or equipment supply flow at the branch tee position
• Water & Wastewater Treatment — Taps a full-size 1-1/2" branch off a 1-1/2" Schedule 40 PVC secondary distribution header at chemical dosing distribution points, filter vessel branch connections, equipment supply splits, and zone supply takeoffs in light-duty municipal and industrial water treatment and distribution systems where the Schedule 40 pressure rating is adequate and the all-socket construction integrates into the solvent-welded system layout
• Gravity Drain & DWV Systems — Provides a full-size 1-1/2" branch point on DWV collection mains, fixture drain collection headers, and vent stack branches in residential and commercial building drain systems at positions where a full-size 1-1/2" branch is required off a 1-1/2" collection main within the solvent-welded drain, waste, and vent system layout
• Light Industrial Process Piping — Taps a full-size 1-1/2" branch off a 1-1/2" Schedule 40 PVC secondary process distribution header at parallel equipment supply splits, zone supply takeoffs, and distribution branch points in light industrial and chemical handling systems where the Schedule 40 pressure rating is sufficient and the all-socket construction is maintained through the branch position