Bullhead Tee, Slip x Slip x Slip PVC Schedule 80 8" x 8" x 10" (801-589)

Blue Monster 76037 1-Step PVC Cement Clear (32OZ)

This 8" x 8" x 10" Schedule 80 PVC Bullhead Tee (Slip x Slip x Slip) provides a heavy-duty all solvent-cement three-way flow collection junction where the perpendicular branch outlet is intentionally larger than both inline run ends — accepting 8" PVC pipe at both run ends for permanent large-diameter solvent-cement bonds while providing a larger 10" slip socket branch outlet for a permanent solvent-cement bond to the downstream collection trunk or primary distribution header. Constructed in dark gray Schedule 80 PVC, it is the more compact of the two confirmed large-diameter 801 series bullhead entries in this catalog — consolidating two 8" socket supply or return runs into a 10" trunk main at a modest 1.25:1 enlargement ratio rather than the larger 1.5:1 enlargement of the confirmed 801-591 (8" x 8" x 12") — suited for municipal water distribution, large-scale industrial process piping, and large agricultural irrigation systems where combining flow from two major 8" socket runs into a 10" trunk is the required large-diameter collection configuration.

The two 8" slip socket run ends accept 8" PVC pipe for permanent large-diameter solvent-cement bonds forming the inline portion of the fitting, while the 10" slip socket branch outlet accepts 10" PVC pipe for a permanent large-diameter solvent-cement bond on the downstream collection trunk — the enlarged 10" branch accommodating the combined flow volume from both 8" socket run legs at a modest near-full-size step-up. This all-socket bullhead configuration is the correct choice when both the upstream 8" run assemblies and the downstream 10" trunk continuation are all-socket cemented PVC systems requiring a flow collection junction at the 8" x 10" size combination. The correct choice between 801-589 (8" x 10" bullhead) and the confirmed 801-591 (8" x 12" bullhead) is determined by the downstream trunk diameter — 801-589 is the correct fitting when the downstream collection trunk or primary distribution header is 10" socket PVC, while 801-591 is the correct fitting when the downstream trunk is 12" socket PVC; both serve dual 8" socket run collection at the same inlet size but at different downstream trunk capacities. At 8" x 10", this bullhead tee most commonly appears in large municipal water distribution systems where two 8" transmission or distribution main sections must consolidate into a 10" trunk main; in large-scale agricultural and municipal irrigation systems where dual 8" pump station discharge headers or primary supply zone mains must combine into a 10" primary distribution trunk; and in large industrial process water systems where parallel 8" distribution headers must collect into a 10" trunk main or recirculating return header throughout the large-diameter all-socket PVC grid.

Installation of large-diameter Schedule 80 PVC socket fittings at 8" and 10" requires significantly different procedures and materials than small-bore installations. Apply heavy-bodied, slow-set PVC solvent cement rated for large-diameter joints at all three ports — both 8" run end sockets and the 10" branch socket — per ASTM D2564 procedures and manufacturer guidance for fittings above 4" nominal diameter. Apply primer to both the pipe exterior and fitting socket interior at each port before cement application. Working time, cement application quantity, assembly force requirements, and cure time for large-diameter 8" and 10" joints are substantially longer and more demanding than small-bore procedures — follow manufacturer published procedures for large-diameter solvent cement joints precisely. Joints at this size require mechanical support, alignment equipment, and an adequate installation crew; support the fitting and pipe sections independently to prevent joint stress during the cure period. Full cure time before pressurization must be observed per manufacturer guidelines for large-diameter joints. Derate pressure ratings for elevated temperatures per published derating curves.

Specifications:

Industries & Applications:

• Municipal Water Distribution — Collects combined flow from two 8" socket municipal water transmission or distribution main sections into a continuing 10" socket trunk main in municipal water distribution systems where parallel supply zones, pump station discharge headers, or distribution grid sections must consolidate at a large-diameter all-socket bullhead tee junction — the more compact 10" collection trunk alternative to the 801-591 (8" x 12" bullhead) where a 10" trunk provides sufficient capacity for the combined 8" run flows
• Large-Scale Irrigation — Agricultural & Municipal — Combines flow from two 8" socket primary supply runs or pump station discharge lines into a continuing 10" socket primary distribution trunk or collection header in large-scale agricultural, golf course, and municipal irrigation systems where the combined 8" flows require a 10" trunk capacity rather than a larger 12" trunk at the consolidation point throughout the large-diameter distribution layout
• Industrial Process Piping — Provides a large-diameter all-socket flow collection junction where two 8" socket process water distribution headers, cooling water supply runs, or recirculating system return lines must consolidate into a continuing 10" socket trunk in large industrial manufacturing, power generation, and chemical processing facilities where large-diameter all-socket PVC construction is specified at primary and secondary trunk interconnection points
• Water Treatment & Potable Water Systems — Collects flow from two 8" socket filter effluent runs, treatment train distribution headers, or backwash collection lines into a continuing 10" socket trunk or collection main in large-scale water treatment plants where NSF/ANSI 61 compliance and all-socket large-diameter PVC construction are required and a 10" collection trunk is the specified downstream capacity at the primary collection junction
• Fire Protection — Large-Diameter Grid Systems — Provides a large-diameter all-socket flow collection junction in large commercial, industrial, and municipal fire suppression distribution systems where two 8" socket grid feed or zone supply mains must consolidate into a 10" socket primary supply trunk at the main grid collection point — the more compact collection trunk option versus a 12" collection at the same 8" inlet run size
• Large-Scale Water Recirculation & Aquaculture — Collects combined 8" socket recirculating system supply or return runs into a continuing 10" socket primary recirculation trunk in large aquaculture, water park, and industrial recirculating water systems where large-diameter Schedule 80 PVC chemical resistance and all-socket construction are required at primary flow collection points throughout the recirculating distribution layout