Reducing Tee, Slip x Slip x Slip PVC Schedule 80 1" x 1" x 1/2" (801-130)

This 1" × 1/2" Schedule 80 PVC Reducing Tee provides a two-step reducing solvent-cemented branch outlet off a 1" PVC main run, with 1" slip socket run ports and a reducing 1/2" slip socket branch outlet — all three ends accepting their respective PVC pipe sizes for solvent cement joining. The two 1" run ports maintain the full-size straight-through flow path of the main run, while the 1/2" branch outlet presents a significantly reduced-diameter socket perpendicular to the run for a small-bore branch supply line, instrument supply connection, chemical dosing branch, or fine-bore equipment feed.

Within the 801-series reducing tee sub-run at the 1" run size, the 801-130 makes a two-step branch reduction — from the 1" run down to a 1/2" branch — compared to the one-step reduction of the 801-131 (1" × 1" × 3/4"). The distinction between the two reducing tees lies entirely in the downstream branch requirement. The 801-131 branches to 3/4" pipe — the adjacent size one step below the 1" run, appropriate for moderate-capacity secondary supply lines, equipment feeds, and zone supply connections that draw from the 1" header. The 801-130 branches to 1/2" pipe — a two-step reduction to the most prevalent small-bore pipe size in commercial and industrial Schedule 80 systems — appropriate for chemical dosing branches, instrument supply takeoffs, small equipment connection feeds, pressure gauge supply lines, and fine-bore process connections where the 1/2" pipe size matches the flow requirement and connection size of the downstream component. When the branch must carry a 1/2" pipe run rather than the larger 3/4" of the 801-131, the 801-130 is the correct reducing tee selection.

The 1/2" branch outlet of the 801-130 gives this fitting a particularly wide application reach within the small-bore branch population. Half-inch NPT and 1/2" PVC pipe are encountered across chemical dosing pump branch lines, instrument supply mains, pressure gauge supply branches, flow switch connections, pressure switch feeds, small solenoid valve supply lines, and equipment nozzle connections throughout commercial and industrial installations. Wherever a 1" Schedule 80 process header or distribution main must tap off a 1/2" cemented branch run — rather than a 1/2" threaded component — the 801-130 provides the most direct single-fitting solution. If the branch connection requires a threaded 1/2" interface rather than a cemented socket, the 802-series Slip × Slip × FPT tee applies instead.

The all-slip configuration of the 801-130 is the critical differentiator from threaded-branch tee alternatives at this size combination. All three connections — both 1" run ports and the 1/2" branch — are solvent-cemented socket joints, integrating the tee completely into the solvent-welded Schedule 80 system without introducing any threaded interface at the branch point. This all-cement construction is the correct design choice wherever the 1/2" downstream branch is a cemented PVC pipe run routed through the system — maintaining the fully solvent-welded integrity of the Schedule 80 piping from the main header through the reducing tee body and into the 1/2" branch continuation without interruption.

The reducing tee eliminates the need for a full-size 1" equal tee plus a downstream reducing bushing, reducer coupling, or adapting assembly to achieve the same 1"-run-to-1/2"-branch transition in a single fitting at the tee body. Where separate equal tee plus downstream reducer assemblies add fitting count, joint count, and assembly length to the branch connection, the 801-130 reduces the branch transition to a single three-joint fitting at the header position.

The governing-end pressure rating convention places the 1" run ports in control of the assembly rating. The 1" sockets govern at approximately 450 psi @ 73°F — the same rating as the 1" equal tee (801-010) — with no pressure rating penalty at the branch connection from the reducing branch configuration. The 1/2" branch socket independently supports a higher pressure at its smaller bore size but does not set the assembly rating when the larger 1" ends are present.

Manufactured in dark gray Schedule 80 PVC, this tee delivers the increased wall thickness and mechanical strength required in industrial, chemical, and commercial pressure piping where Schedule 40 ratings are insufficient. PVC's broad chemical resistance covers acids, bases, salts, chlorine, and most common process fluids, providing long service life in corrosive environments where metal tees would degrade, corrode, or contaminate the fluid stream. NSF/ANSI 61 listing confirms suitability for potable water contact.

Rated to 450 psi at 73°F, this tee handles standard to elevated pressure service across a wide range of fluid handling applications. Three separate solvent-cemented joints must be made at installation. For all three joints, clean and dry each pipe end and socket interior before application. Apply purple PVC primer to all mating surfaces — both 1" pipe ends and both 1" run port socket interiors; the 1/2" branch pipe end and the 1/2" branch socket interior. Apply a uniform coat of Schedule 80 PVC solvent cement to both the pipe end and socket interior at each joint before inserting. Insert each pipe with a slight quarter-turn twist and hold firmly for 30 seconds. Note that the 1" and 1/2" socket ends require different pipe sizes — confirm the correct pipe diameter is aligned to each socket before cementing, as the size differential makes incorrect alignment apparent but difficult to correct after cementing begins. 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:

• Chemical Dosing & Injection Branch Lines — The defining application for the 1" × 1/2" reducing branch configuration: taps a 1/2" solvent-cemented chemical dosing branch off a 1" Schedule 80 PVC process header at chemical feed injection points, reagent distribution branch connections, and secondary dosing circuit takeoffs in water treatment, chemical processing, and agricultural chemical handling systems where the cemented 1/2" branch feeds the dosing assembly rather than connecting to a threaded dosing component — eliminating the need for a full-size 1" tee plus a downstream 1/2" reducer at the branch position
• Industrial Process Piping — Provides a 1/2" solvent-cemented reducing branch outlet off a 1" Schedule 80 PVC process header at instrument supply branch takeoffs, chemical dosing secondary distribution points, parallel equipment feed splits, and zone supply connections in chemical processing, water treatment, and manufacturing facility piping where the 1/2" branch pipe run cements directly into the tee socket as part of the fully solvent-welded system
• Instrument Supply Branch Connections — Taps a 1/2" cemented instrument supply branch off a 1" process header or distribution main at monitoring station supply takeoffs, pressure gauge supply branches, flow indicator supply connections, and sampling station feed points in Schedule 80 PVC systems where the instrument supply branch is a cemented 1/2" PVC pipe run rather than a threaded instrument connection at the tee body — distinguishing the 801-130 from the 802-series threaded-branch alternative at this size combination
• Commercial Plumbing — Branches a 1/2" supply line off a 1" Schedule 80 PVC water distribution main at small fixture supply branches, equipment feed connections, and fine-bore zone supply takeoffs in mechanical room and building water distribution systems where the 1/2" branch capacity is appropriate for the downstream fixture or small equipment supply requirement within the solvent-welded Schedule 80 system layout
• Water & Wastewater Treatment — Splits a 1" Schedule 80 PVC process header into a straight 1" continuation and a 1/2" cemented secondary branch at chemical dosing distribution points, instrument supply takeoffs, sampling port branch connections, and fine-bore secondary zone supply positions in municipal and industrial water treatment and distribution facilities where the solvent-welded 1/2" branch pipe run cements into the reducing tee outlet socket
• Irrigation & Agricultural Systems — Taps a 1/2" branch off a 1" Schedule 80 PVC pressure lateral or submain at drip zone supply takeoffs, small emitter distribution branches, chemical injection secondary branch connections, and fine-bore lateral supply points in high-pressure commercial irrigation, greenhouse, and agricultural water supply systems where the 1/2" branch capacity serves the downstream drip or fine-bore supply requirement from the 1" primary lateral
• HVAC & Mechanical Systems — Branches a 1/2" secondary supply or instrument connection run off a 1" Schedule 80 PVC cooling tower makeup main, treated water distribution header, or glycol system primary line at chemical dosing branch points, instrument supply takeoffs, and small-bore secondary distribution connections in commercial mechanical system piping requiring Schedule 80 pressure performance at the two-step reducing branch connection