Reducing Tee, Slip x Slip x Slip PVC Schedule 80 10" x 10" x 6" (801-626)

The 10" x 10" x 6" Schedule 80 Gray PVC Reducing Tee (801-626, Slip x Slip x Slip) is a large-diameter, heavy-wall specialty tee fitting manufactured to ASTM D2467 in Schedule 80 gray PVC — a reducing tee configuration in which the run connections are 10" and the branch connection is 6", providing a single-body Schedule 80 PVC solution for taking a 6" lateral branch connection off a 10" primary transmission or distribution main without reducing the primary flow path diameter, without field-fabricated saddle taps or custom manifold assemblies, and without transitioning out of Schedule 80 gray PVC construction at the branch takeoff point. The 801-626 is the correct fitting where a 10" Schedule 80 PVC primary main must supply a 6" branch connection — where the downstream zone, sector, equipment section, or distribution branch has been established at 6" by the hydraulic design, where the primary 10" run must continue at full diameter through the straight-run ports with zero restriction, and where the branch connection must be a manufactured, rated, NSF-listed, ASTM D2467-compliant Schedule 80 gray PVC fitting at the lateral branch takeoff point in the 10" primary system.

The 10" x 10" x 6" configuration occupies the middle position in the 10" run Schedule 80 PVC reducing tee series with a hydraulic character that is distinct from both the smaller-branch lateral configurations and the near-equal large-branch configurations at the same run size. The 6" branch at 60% of the 10" run diameter is a moderate-ratio lateral branch — large enough that the downstream 6" distribution system carries a meaningful fraction of the primary run flow and the hydraulic design must account for the branch flow's effect on primary main velocity and pressure downstream of the tee, yet small enough that the primary trunk remains hydraulically dominant through the straight-run ports and the fitting functions as a substantial lateral service connection rather than a near-equal flow division point. This middle-ratio hydraulic character defines the 801-626's position relative to both ends of the 10" run reducing tee series: where the 801-624 (4" branch, 40% ratio) serves minimal lateral service taps where the primary trunk is completely dominant and the branch draws a negligible fraction of the primary flow, and the 801-628 (8" branch, 80% ratio) serves near-equal flow division points where the branch carries the large majority of the primary flow, the 801-626 serves the intermediate range of branch flow proportions — zone supply headers, major equipment supply branches, large service laterals, and primary sector distribution connections — where the 6" branch carries a substantial but not dominant share of the primary main flow and the hydraulic design must treat both the primary run continuation and the 6" branch flow as significant contributors to the system's pressure, velocity, and distribution performance.

The 6" branch size connects the 10" primary main to one of the most commercially active pipe sizes in the large-scale commercial PVC distribution market. At 6", the downstream branch system enters the pipe size range that serves large-scale commercial zone supply, municipal distribution laterals, major irrigation sector transmission mains, and large equipment supply branches — the most common branch pipe size for primary zone supply connections in municipal water distribution systems serving major residential and commercial service areas, the primary pump discharge and suction connection size at medium-scale pump stations, the standard zone transmission main size in large commercial irrigation systems, and the primary equipment supply connection size for large-scale industrial process equipment sections. The 801-626 is therefore an interface fitting between the 10" primary infrastructure system and the 6" large-commercial distribution level — a branch takeoff that supplies not merely a single equipment connection or a small zone lateral but a substantial 6" distribution sub-system that itself serves multiple downstream connections, zone headers, and equipment supply branches. This downstream distribution significance of the 6" branch distinguishes the 801-626 from the smaller-branch lateral configurations and explains why the 6" branch hydraulic design receives more engineering attention in the primary system layout than the smaller 3" and 4" lateral branches do — the 6" branch flow volume is large enough to require explicit accounting in the primary main's hydraulic calculations and the fitting's pressure loss contribution at the branch entry must be included in the system engineer's friction loss and pressure distribution analysis.

Schedule 80 gray PVC construction is the correct and only material specification for this fitting across every application where the 10" x 10" x 6" reducing tee configuration is required in a Schedule 80 piping system. The Schedule 80 wall thickness at both the 10" run connections and the 6" branch port provides the structural integrity and pressure performance required at a large-diameter primary main moderate-branch-ratio tee where the run connections experience the full internal pressure and flow conditions of the 10" primary main and the 6" branch port operates under primary main pressure at a branch entry geometry that imposes meaningful lateral loading on the tee body proportional to the 6" branch port area and the substantial branch flow volume that a 60% branch-to-run ratio represents under primary main operating conditions. The Schedule 80 wall throughout the full tee body — including the transition zone between the 10" run body and the 6" branch port — provides the structural continuity and material class consistency that Schedule 80 system specifications require at every primary main branch fitting regardless of branch size, and the gray color provides the permanent, inspectable Schedule 80 material class identification at the primary main branch connection that confirms the installed material class for inspectors, maintenance engineers, and facility managers at every branch takeoff point in the 10" primary system. PVC Type 1 Grade 1 construction with cell classification 12454 per ASTM D1784 provides broad chemical resistance across water treatment chemicals, process water service, industrial utility water, and the full range of non-solvent process fluids appropriate for Schedule 80 PVC primary main service. The 10" run socket connections and the 6" branch socket connection all solvent cement directly onto standard IPS Schedule 40 or Schedule 80 PVC pipe of the corresponding nominal sizes — 10" IPS schedule pipe on both run ports and 6" IPS schedule pipe on the branch port. At the 10" run socket connections, heavy-body solvent cement is mandatory, pre-planned assembly with both 10" pipe ends positioned before cement application begins is essential, and full cure time compliance before system pressurization is non-negotiable. The 6" branch socket connection requires the same heavy-body cement and full cure time compliance as the 10" run sockets — the branch socket on a large-diameter primary main fitting carries the full system operating pressure at the branch port regardless of the branch pipe size relative to the run, and joint integrity at the 6" branch connection is as operationally critical as at the 10" run connections under primary main service pressure conditions.

NSF 61 certification lists this fitting for potable water contact, and NSF 14 covers compliance with applicable plastics piping material standards — making it the correct primary main branch fitting for municipal water treatment and distribution systems, large potable water pump station distribution headers, and large commercial and institutional water supply primary mains where NSF-listed materials are required at every fitting in the primary distribution system regardless of the branch size at the lateral takeoff point. ASTM D2467 governs Schedule 80 PVC socket fittings and defines the manufacturing, dimensional, and pressure performance requirements the 801-626 is produced to. Verify manufacturer pressure rating documentation for the specific fitting configuration before final system specification — at the 10" x 10" x 6" reducing tee configuration, the governing pressure rating is determined by the largest port size (10") and the fitting's tested performance at this large-diameter moderate-ratio lateral branch geometry, and must be confirmed against the manufacturer's published pressure-temperature rating table for SKU 801-626 before installation in systems at or near the fitting's rated pressure ceiling.

Key Features:

• Schedule 80 gray PVC reducing tee — 10" x 10" run x 6" branch, all socket (slip) ends
• Moderate lateral branch configuration — 6" branch at 60% of 10" run diameter; middle position in the 10" run Schedule 80 PVC reducing tee series between the true lateral 801-624 (4" branch, 40%) and the near-equal 801-628 (8" branch, 80%)
• 6" branch carries a substantial fraction of primary run flow — hydraulic design must account for branch flow in primary main pressure and velocity calculations
• Primary 10" straight-run flow path maintained at full diameter with zero branch-induced restriction
• Interface fitting between the 10" primary infrastructure system and the 6" large-commercial distribution level
• Manufactured to ASTM D2467 — the governing standard for Schedule 80 PVC socket fittings
• NSF 61 certified for potable water contact; NSF 14 listed
• Solvent cement socket connections compatible with Schedule 40 and Schedule 80 IPS pipe at both run and branch sizes
• Gray color — universal Schedule 80 material class identification at the primary main branch connection
• Schedule 80 wall thickness throughout the full tee body including the 6" branch port and the 10"-to-6" transition geometry
• Cell classification PVC 12454 per ASTM D1784
• Heavy-body solvent cement required at all three socket connections including the 6" branch; full cure time compliance mandatory before pressurization
• Pressure rating: verify against manufacturer pressure-temperature table for SKU 801-626

Specifications:

Industries & Applications:

• Municipal Water Distribution — Primary Transmission Main Major Zone Supply and Lateral Connections — The 10" x 10" x 6" Schedule 80 reducing tee is specified at 6" major zone supply lateral takeoff points on 10" municipal water transmission and primary distribution mains — connections supplying 6" zone distribution headers serving major residential and commercial service areas, 6" pressure zone supply laterals feeding secondary distribution systems, 6" fire flow supply branches at high-demand locations, and 6" primary lateral connections to major service areas along the 10" primary main route; at municipal scale, the 6" branch is the most significant zone supply lateral size taken off a 10" primary main — carrying enough flow that the branch withdrawal must be accounted for in the primary main's hydraulic design and the downstream 6" zone distribution system itself serves multiple secondary connections and service points rather than a single equipment or building connection; the 801-626 provides the manufactured, rated, NSF-listed, ASTM D2467-compliant single-body Schedule 80 PVC solution for 6" major zone supply lateral connections at 10" primary transmission main junction points in large municipal PVC water distribution system construction where the branch flow analysis has established 6" as the correct zone supply lateral pipe size
• Water Treatment Plant — Primary Header Major Branch and Zone Supply Connections — Installed at 6" branch connection points on 10" primary distribution headers in municipal and industrial water treatment plants — clearwell supply and distribution primary trunks supplying 6" major zone distribution headers serving large equipment sections, filter influent and effluent primary headers branching to 6" parallel filter train supply connections, backwash primary supply mains connecting to 6" major backwash equipment headers, plant service water primary headers supplying 6" major equipment supply branches to large process equipment sections, and chemical dilution and utility water primary headers supplying 6" major zone distribution connections; the 6" branch at water treatment plant primary header level is the correct branch size where the downstream section serves multiple equipment connections, instruments, and secondary distribution points that collectively carry a substantial fraction of the primary header flow — larger than the small-equipment individual supply branches that a 3" or 4" lateral serves, and appropriately sized at 6" to serve a major equipment zone or parallel treatment train section at the 10" primary header level; NSF 61 listing confirms fitness for potable water contact at every primary distribution branch connection
• Pump Station — Primary Header to Major Branch and Bypass Connections — Used at 6" major branch connections off 10" primary pump station headers where the 10" primary pump discharge or suction header must supply a 6" branch to a major pump train bypass connection, a large-capacity pressure relief header, a significant zone isolation bypass assembly, a major check valve bypass line, or a large-capacity secondary supply branch carrying a substantial fraction of the primary pump station header flow; the 6" branch at pump station primary header level is the correct branch size where the bypass, secondary supply, or parallel connection carries a flow volume that a smaller 4" branch would restrict under peak pump station operating conditions, and where the branch flow contribution to the primary header pressure and velocity balance at the tee junction must be explicitly accounted for in the pump station piping hydraulic design; Schedule 80 construction satisfies the material specification at all primary header major branch connections in pump station piping systems where Schedule 80 is the system-wide material standard
• Industrial Process Piping — Primary Header Major Equipment and Section Branch Connections — Used at 6" lateral branch takeoff points on 10" process water primary headers, cooling water primary distribution trunks, plant utility water primary mains, and large-volume industrial process fluid primary distribution headers in manufacturing plants, chemical processing facilities, petrochemical support facilities, and heavy industrial environments where the 10" primary process header must supply a 6" branch to a major equipment section's cooling supply header, a large heat exchanger cluster's supply and return distribution branch, a primary process unit's utility water supply main, a significant secondary distribution trunk serving a major plant section, or a large process zone's dedicated supply line; the 6" branch at 60% of the 10" run is the correct industrial process piping branch size where the downstream equipment section or process zone is large enough to require 6" supply pipe but does not approach the flow capacity that would require a near-equal 8" branch at the 10" primary header; the branch flow at this configuration is explicitly included in the system's hydraulic balance calculations, distinguishing the 801-626 from smaller lateral branch configurations in the 10" run reducing tee series
• Large Commercial & Agricultural Irrigation — Primary Trunk Major Sector and Zone Supply Connections — Specified at 6" lateral branch takeoff points on 10" primary irrigation transmission mains at large commercial irrigation systems — major golf course and resort irrigation systems, large-acreage agricultural operations, and regional landscape irrigation projects where the 10" primary transmission main must supply 6" major zone transmission headers, primary sector isolation valve supply connections, and 6" lateral distribution branch headers serving large irrigation sectors along the primary transmission main route; the 6" branch is the correct zone supply lateral size at large commercial irrigation systems where major sectors served by 6" zone transmission headers draw a substantial fraction of the primary station output from the 10" main — large enough that the zone withdrawal affects the primary main pressure profile downstream of the branch connection and the irrigation hydraulic design must account for the 6" zone supply flow in the primary main's pressure drop calculations; the 801-626 provides the manufactured, rated Schedule 80 PVC single-body solution for 6" major sector and zone supply connections at primary irrigation transmission main junction points
• Industrial Water & Wastewater Treatment — Primary Process Header Major Zone Branch Connections — Installed at 6" major branch connection points on 10" primary process distribution headers in industrial wastewater treatment, water reclamation, and large-scale industrial water management facilities — clarifier influent primary headers supplying 6" major treatment zone feed connections, primary effluent distribution mains supplying 6" major disposal or reuse system distribution branches, aeration system primary supply headers connecting to 6" major zone aeration supply branches, primary sludge handling distribution headers serving 6" major dewatering equipment supply connections, and polymer and dewatering chemical primary distribution headers supplying 6" major dosing zone distribution connections; the 6" branch at 60% of the 10" run is the standard major zone and section branch size along 10" primary process headers in large treatment facilities, serving the process sections large enough to require 6" supply pipe but not so large as to require a near-equal 8" connection at the primary header level
• HVAC & Large Commercial Mechanical Systems — Primary Main Major Zone and Equipment Supply Branches — Specified at 6" major lateral branch supply connections on 10" primary chilled water distribution mains, condenser water primary trunks, and large-capacity hydronic heating and cooling primary distribution headers in large commercial campus, institutional, and industrial mechanical systems where the 10" primary distribution main must supply 6" major branches to large building loop supply connections, high-capacity air handling unit supply headers, large fan coil unit group supply mains, and major equipment room supply connections serving large clusters of terminal mechanical equipment; the 6" branch is the correct major lateral tap size at large campus and institutional HVAC systems where 10" primary mains route between mechanical rooms and buildings, supplying 6" zone connections at large building or zone supply points carrying a substantial fraction of the primary system flow — large enough to require explicit hydraulic accounting in the primary distribution design, yet served correctly at 6" rather than the near-equal 8" branch that a building loop carrying the majority of the primary system flow would require
• Aquaculture & Large-Scale Water Management Infrastructure — Used at 6" major branch connections on 10" primary water supply, recirculation, or distribution headers at the largest commercial aquaculture facilities, regional hatchery systems, and large recirculating aquaculture systems (RAS) where the 10" primary header must supply a 6" branch to a major parallel filtration train, a high-volume aeration system primary distribution header, a primary water conditioning section, or a large recirculation loop serving a major production zone within the facility; the 6" branch at 60% of the 10" run is the correct branch size where the downstream system section requires a substantial supply connection that exceeds the capacity of the smaller lateral branch sizes in the 10" run reducing tee series and where the branch flow volume is explicitly accounted for in the facility's primary water management hydraulic design; Schedule 80 PVC construction handles continuous water contact and treatment chemical exposure at the primary distribution level in commercial aquaculture infrastructure, and NSF 61 listing confirms fitness for potable and process water contact