Tee, Slip x Slip x Slip PVC Schedule 80 3" x 1-1/4" (801-336)

The 801-336 is a 3" x 1-1/4" Schedule 80 PVC Reducing Tee with Slip x Slip x Slip connections. This fitting maintains a full 3" cemented main run on both inline sockets while introducing a 1-1/4" slip branch socket off the side — all three connections are solvent-weld, making the entire assembly a fully cemented, permanent, pressure-rated branch fitting with no threaded ports. The two inline run sockets accept standard 3" Schedule 80 PVC pipe, preserving the full bore of the main line through the fitting, while the 1-1/4" branch socket receives 1-1/4" PVC pipe for a permanent cemented branch connection off the main run.

The all-slip configuration is the defining distinction between the 801-336 and any FPT-branch equivalent at this size. Where an FPT branch version terminates the branch at a threaded valve, gauge, sensor, or equipment connection, the 801-336 continues the branch into a cemented 1-1/4" PVC pipe run downstream of the tee. The branch here is a permanent pipe extension — once cemented, no connection in the assembly can be disassembled without cutting pipe. The all-slip 801-336 is the correct specification when the 1-1/4" branch continues as a cemented PVC pipe run to a downstream component, sub-circuit, drain point, or secondary system. If the branch terminates at a threaded connection rather than continuing as cemented pipe, an FPT-branch equivalent at this size is the more efficient specification.

The 3" to 1-1/4" size differential places the 801-336 in the small-to-mid branch tier of the 3" Schedule 80 all-slip reducing tee series. The 1-1/4" branch represents a meaningful but limited-flow pipe extension off the 3" main — large enough to serve a modest sub-circuit, equipment feed, or secondary distribution branch that carries more flow than a 1" or 3/4" minor spur, but substantially below the flow capacity of the 3" run it draws from. This is not a flow-splitting tee; the branch does not carry a dominant share of the main line capacity. It is a directional branch fitting introducing a defined 1-1/4" cemented pipe run at a perpendicular angle off the main without reducing the main line bore at the tee point.

The 801-336 is confirmed as the fitting that fills the sequential gap between the 801-335 (1" branch) and the 801-337 (1-1/2" branch) in the 3" Schedule 80 all-slip reducing tee series. This completes the documented 801-33x series at consecutive branch sizes from 1/2" through 2-1/2", with the full-size equal branch at 801-030. Buyers stepping through the series should note that the five consecutive part numbers 801-333 through 801-337 correspond to branch sizes 1/2", 3/4", 1", 1-1/4", and 1-1/2" respectively — a clean ascending pattern by branch size that, once understood, makes series navigation intuitive. Confirming the correct branch size before ordering remains essential, as adjacent part numbers still differ by a single digit.

The 3" run sockets require a full two-step primer and cement application with thorough coverage of the complete socket interior and pipe end surface. The 1-1/4" branch socket receives the same two-step approach. On a tee, run and branch sockets should be assembled in a deliberate sequence that allows each joint adequate set time, with each pipe held in alignment through the set period before the joint is allowed to cure undisturbed.

Schedule 80 wall thickness ensures the fitting meets the pressure and chemical resistance demands of industrial and commercial service environments, and the dark gray rigid PVC compound provides broad resistance to acids, bases, and industrial chemicals throughout the service life of the installation.

Specifications:

⚠️ Note: In a reducing fitting, the smallest port governs the pressure rating. All three sockets are permanent solvent-weld connections — once cemented, no connection can be broken without cutting pipe. Use primer before cementing all three sockets — do not skip the priming step on the 3" run sockets at this diameter. The 1-1/4" branch socket is a cemented pipe extension — if the downstream branch terminates at a threaded valve, gauge, or instrument rather than continuing as PVC pipe, specify an FPT branch equivalent instead. Confirm 801-336 (1-1/4" branch) vs. 801-335 (1" branch) and 801-337 (1-1/2" branch) before ordering — adjacent part numbers differ by a single digit. Consult manufacturer derating tables for elevated-temperature service.

Industries & Applications:

• Chemical Processing — Introduces a permanent 1-1/4" cemented chemical bypass spur, secondary feed line, or recirculation return off a 3" chemical distribution main where the branch continues as cemented PVC pipe to a downstream component rather than terminating at a threaded fitting, with the all-slip assembly eliminating threaded joints at the branch point in corrosive-service piping
• Water & Wastewater Treatment — Used on 3" treatment plant distribution headers and process piping mains where a permanent 1-1/4" PVC pipe branch must be introduced for a modest sub-circuit, low-flow equipment feed, drain spur, or secondary process connection that continues as a cemented pipe run downstream of the tee
• Industrial Process Piping — Introduces a permanent 1-1/4" PVC cemented branch off a 3" process water, cooling water, or chemical line on plant piping and skid assemblies where the branch continues as a cemented run to a downstream drain point, bypass circuit, secondary system, or equipment connection that receives 1-1/4" PVC pipe directly
• Pump Station & Equipment Connections — Installed on 3" pump discharge or suction mains where a permanent 1-1/4" PVC bypass line, recirculation spur, or secondary circuit branch must originate from the main as a continuing cemented pipe run, with the all-slip configuration producing a cleaner assembly than a tee-plus-adapter combination at the branch exit
• Irrigation & Agricultural Systems — Used on 3" pressurized supply mains where a permanent 1-1/4" PVC branch pipe to a modest sub-zone lateral, chemical injection spur, or secondary circuit must tie into the main and continue as a fully cemented pipe run downstream of the branch point
• Municipal & Utility Infrastructure — Applied on 3" municipal water distribution and pump station mains where a permanent 1-1/4" PVC service branch or sub-distribution pipe must originate from the main at a defined point and continue as a cemented run to a downstream valve box, service connection, or secondary distribution assembly