Tee, Slip x Slip x Slip PVC Schedule 40 3/8" (401-003)

This 3/8" Schedule 40 PVC Tee (Slip x Slip x Slip) provides a full-size three-way solvent-cement junction for 3/8" socket PVC piping systems, accepting 3/8" PVC pipe at all three ports for permanent solvent-cement bonds in small-bore instrument manifolds, chemical injection distribution headers, micro-flow service assemblies, and specialized small-bore process water systems. Constructed in white Schedule 40 PVC, it offers reliable performance wherever a compact, corrosion-resistant three-way junction is required at the smallest standard nominal socket size in the Schedule 40 PVC fitting family.

The two 3/8" slip socket run ends form the inline portion of the tee and accept 3/8" PVC pipe for permanent solvent-cement bonds, maintaining full run diameter through the fitting. The 3/8" slip socket branch outlet accepts 3/8" PVC pipe for a permanent solvent-cement bond perpendicular to the run, providing a three-way all-socket junction without any threaded interfaces or size reduction at the fitting body. At 3/8", this tee is among the most specialized entries in the 401 series, appearing primarily in small-bore instrument supply manifolds where multiple 3/8" socket lateral runs must branch off a common 3/8" socket header, chemical injection distribution assemblies where micro-flow feed runs must be distributed from a 3/8" socket supply, and dedicated small-bore process water systems where the 3/8" nominal pipe size is specified throughout the assembly. The 3/8" Slip x Slip x Slip configuration is the all-socket approach to three-way branching at this small-bore size — the correct choice when all three pipe connections in the assembly are 3/8" PVC socket runs that will be solvent-cemented; it should not be confused with any 402 series mixed-connection counterpart at this size (Slip x Slip x FPT, if stocked), which would provide a 3/8" female-threaded branch outlet for connecting male NPT-threaded components directly off the tee body without a separate adapter.

Rated to approximately 920 psi at 73°F, this tee delivers the high pressure performance characteristic of small-bore Schedule 40 PVC fittings — well-suited for demanding small-bore chemical process, instrument supply, and micro-flow service applications within its pressure class. Its PVC composition provides excellent resistance to acids, bases, salts, chlorinated water, and a broad range of chemical exposures encountered in instrument and process applications at this small pipe diameter. NSF/ANSI 61 listing confirms suitability for potable water contact.

Apply solvent cement to both the pipe end and fitting socket at each port per ASTM D2564 procedures, using a primer appropriate for the pipe and fitting schedule. Insert pipe fully into each socket and maintain a quarter-turn during assembly for even cement distribution. At 3/8", the small socket engagement depth requires careful full insertion before the cement begins to set — partial insertion at this small diameter produces a weak joint; work quickly and confirm full seating at each port before the cement sets. Allow adequate cure time before pressurizing the system, and derate pressure ratings for elevated temperatures per published derating curves.

Specifications:

Industries & Applications:

• Industrial Process Piping — Provides three-way all-socket junctions in 3/8" small-bore instrument supply manifolds, micro-flow chemical dosing distribution headers, and dedicated small-bore process water distribution assemblies in water treatment, chemical processing, and manufacturing facilities where 3/8" socket PVC construction is specified throughout and a compact three-way all-cemented branch junction is required at multiple distribution points in the assembly
• Chemical Handling — Branches 3/8" socket chemical injection feed lines, micro-flow dosing distribution laterals, and small-bore reagent distribution runs in systems conveying acids, caustics, fertilizer solutions, and other chemically aggressive fluids where the small-bore 3/8" socket assembly must distribute to multiple injection points from a common 3/8" socket supply header without any threaded interfaces at the tee body
• Instrument Supply Distribution — Distributes instrument supply flow to multiple 3/8" socket instrument branches, pressure sensing lines, and small-bore monitoring connections from a common 3/8" socket supply run in instrument manifold assemblies where all-socket construction is maintained throughout and three-way branching is required at multiple tap points along the instrument supply header
• Water Treatment & Aquaculture — Used in small-bore chemical dosing distribution assemblies, micro-flow treatment additive distribution headers, and instrument supply manifolds where a 3/8" socket supply run must branch to multiple 3/8" socket lateral connections with NSF/ANSI 61 compliance required throughout the all-cemented assembly
• Commercial Plumbing — Provides three-way all-socket junctions in 3/8" small-bore service connections, pressure monitoring tap supply lines, and instrument feed distribution assemblies in commercial building systems where 3/8" socket PVC is specified for dedicated small-bore service runs requiring three-way branching at distribution points
• HVAC & Mechanical Systems — Branches 3/8" socket chemical feed distribution lines, instrument supply connections, and micro-flow service laterals in cooling tower chemical distribution assemblies, chilled water monitoring supply manifolds, and chemically treated water system small-bore distribution headers within the Schedule 40 pressure class where three-way all-socket junctions are required at 3/8" small-bore distribution branch points