Bullhead Tee, Slip x Slip x Slip PVC Schedule 80 6" x 6" x 8" (801-536)

The 6" x 6" x 8" Schedule 80 Gray PVC Bullhead Tee (801-536, Slip x Slip x Slip) is a large-diameter, heavy-wall specialty three-way junction fitting manufactured to ASTM D2467 in Schedule 80 gray PVC — a bullhead tee configuration in which the two collinear run connections are 6" and the single perpendicular branch connection is 8", providing a single-body Schedule 80 PVC solution for three-way junction service where the branch port is larger than the run ports, where the fitting's primary hydraulic role is the collection of two converging 6" flow streams from opposite collinear directions into a single 8" perpendicular branch collection port, and where the inverse role — the distribution of a single 8" supply from the branch port into two 6" collinear run connections discharging in opposite directions — is equally supported by the same fitting body geometry. The 801-536 is the only fitting in the Schedule 80 PVC socket line that serves the 6" x 6" x 8" three-way junction role with the branch port larger than the run ports — a geometric configuration that distinguishes the bullhead tee from every standard reducing tee, equal tee, and wye in the Schedule 80 PVC socket fitting catalog, and that makes the 801-536 the correct and only manufactured Schedule 80 PVC socket solution wherever two parallel 6" primary distribution or collection runs must converge into a single 8" collection header, wherever a single 8" primary supply must divide equally into two parallel 6" distribution runs, or wherever a three-way junction at the 6"/8" pipe size interface requires the branch to be larger than the run in a permanently bonded Schedule 80 gray PVC all-socket construction.

The bullhead tee fitting type is defined by the inversion of the standard reducing tee's port geometry — and this inversion is the foundational specification fact that every buyer must understand before specifying the 801-536 over any standard reducing tee, equal tee, or wye at the 6"/8" pipe size interface. In a standard reducing tee, the run ports are the largest ports and the branch port is smaller — the primary main continues at full diameter through the collinear run ports while the branch draws a fraction of the primary flow through the smaller perpendicular branch port. In the bullhead tee, this relationship is inverted: the run ports are the smaller collinear connections and the branch port is the larger perpendicular connection. The 801-536's 6" run ports and 8" branch port establish a fitting geometry where the branch-to-run ratio is 133% — the branch is 33% larger in diameter than the run, making the branch the fitting's hydraulically dominant port and the run ports the subsidiary connections through which the two smaller collinear flow streams enter or exit the fitting body. This 133% branch-to-run ratio distinguishes the bullhead tee not merely as a fitting with an unusually large branch but as a fundamentally different fitting type — a junction where the geometric relationship between the primary flow path and the lateral connection is reversed relative to every standard tee configuration in the Schedule 80 PVC socket line, and where the fitting's hydraulic role is collection or symmetric distribution rather than the standard lateral service tap or near-equal branch division that defines the standard reducing tee series.

The hydraulic character of the 801-536 in its primary collection role requires explicit understanding of the flow dynamics at the bullhead tee junction. When the 801-536 is installed in the collection orientation — with flow entering from both 6" run ports simultaneously and exiting through the 8" branch port — the two opposing 6" flow streams converge at the fitting body's central junction zone from directly opposite directions, meeting in a head-on confluence that redirects the combined flow mass toward the perpendicular 8" branch port. This head-on confluence of opposing flow streams is the defining hydraulic event at a bullhead tee in collection service, and it distinguishes the bullhead tee's internal hydraulics from both the standard lateral tee's single-direction branch entry and the wye's angular branch entry. The combined volumetric flow from both 6" run ports must be accommodated by the 8" branch port — and the cross-sectional area relationship at the 801-536 confirms that the 8" branch port's flow area is sufficient to accept the combined 6" run flows: two 6" run pipes carry a combined cross-sectional flow area of approximately 56.5 square inches, while the 8" branch port's flow area is approximately 50.3 square inches. This means the 8" collection branch at the 801-536 is slightly undersized relative to the combined cross-sectional area of the two 6" runs — a geometric relationship that produces a modest velocity increase as the combined 6" run flows converge and accelerate through the 8" branch port, and that the hydraulic engineer must account for in calculating the friction loss and available discharge pressure at the 8" collection header downstream of the bullhead tee junction under the system's full design collection flow rate. The turbulence at the bullhead tee's head-on confluence zone is more complex than at a standard lateral tee branch entry — the opposing 6" flow streams create a turbulent mixing zone at the fitting body's center before the combined flow redirects toward the 8" branch port — and the pressure loss coefficient at the 801-536 collection junction must be obtained from the manufacturer's hydraulic resistance data for the specific bullhead tee configuration rather than adapted from standard lateral tee pressure loss coefficients, which do not apply to the head-on confluence geometry of the bullhead configuration.

In the distribution orientation — with flow entering through the 8" branch port and dividing into two 6" run connections discharging in opposite directions — the 801-536's hydraulic character is equally distinctive. A single 8" supply flow must divide symmetrically into two 6" run paths discharging in directly opposite directions from the fitting body. The symmetric nature of the two 6" run paths — identical pipe size, identical fitting body resistance, discharging in directly opposed directions — means that the flow division is hydraulically symmetric if the downstream resistance on both 6" run paths is equal, and hydraulically asymmetric if the downstream resistances are unequal. The hydraulic design of a system using the 801-536 in the distribution orientation must explicitly confirm the downstream resistance balance between the two 6" run paths — if the two 6" distribution paths serve demands or pipe routes of unequal resistance, the asymmetric downstream resistance will produce unequal flow division between the two 6" run ports, and the hydraulic model must account for this asymmetric division in calculating each 6" run's available flow and pressure under the system's operating conditions. The distribution orientation's equal-resistance requirement distinguishes the bullhead tee distribution application from the collection application where both 6" supply runs naturally contribute flow to the common 8" collection port regardless of minor resistance differences between the two supply runs.

The 801-536's 6" x 6" x 8" configuration positions the fitting at the infrastructure interface between the 6" large-commercial primary distribution level and the 8" large-commercial primary distribution and collection level — the junction where two parallel 6" primary distribution or collection systems must connect through a single fitting body to an 8" primary transmission, collection, or distribution header. At 6" IPS, the run connections serve the standard large-commercial primary distribution infrastructure level — the pipe size that serves as the primary distribution main across a broad range of large commercial, industrial, and municipal distribution applications including large commercial irrigation primary mains, municipal water distribution zone supply headers, industrial process primary distribution trunks, water treatment plant primary distribution headers, and pump station secondary distribution headers. At 8" IPS, the branch connection serves the large-commercial primary transmission and collection infrastructure level — the pipe size that serves as the primary transmission main or primary collection header in large commercial and municipal systems where the 8" main carries the combined flow of two or more 6" distribution or collection sub-systems. The 801-536 accordingly serves the infrastructure-level junction between the 6" and 8" pipe sizes in both the collection direction — two parallel 6" supply or collection runs combining into an 8" primary header — and the distribution direction — a single 8" primary supply dividing into two parallel 6" distribution runs — providing the single manufactured Schedule 80 gray PVC all-socket fitting that accomplishes this infrastructure-level junction in a permanently bonded Schedule 80 socket construction at the 6"/8" pipe size interface.

Schedule 80 gray PVC construction is the correct and only material specification for this fitting across every application where a 6" x 6" x 8" bullhead three-way junction on a Schedule 80 PVC primary distribution or collection system is required. The Schedule 80 wall thickness applied uniformly through the complete bullhead tee body — across both 6" collinear run ports, through the 8" perpendicular branch body, and at the full circumference of every socket connection — provides the structural integrity required at a bullhead three-way junction where the opposing 6" run flows' head-on confluence produces a turbulent mixing zone and a combined flow redirection force at the fitting body's center under sustained operating conditions at primary main service pressures. The gray color provides the permanent, inspectable Schedule 80 material class identification at the bullhead junction — confirming the installed material class for inspectors, maintenance engineers, and facility managers at the fitting's unique three-way junction geometry and distinguishing the installed fitting from white Schedule 40 components elsewhere in the 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. All three socket connections solvent cement directly onto standard IPS Schedule 40 or Schedule 80 PVC pipe of the corresponding nominal sizes — 6" IPS schedule pipe on both collinear run ports and 8" IPS schedule pipe on the perpendicular branch port. The assembly sequence at the 801-536 requires particular pre-planning because all three connections are large-diameter socket joints on the same fitting body — both 6" run sockets are large-diameter bonding surfaces requiring full large-diameter assembly discipline including heavy-body solvent cement, complete circumferential coverage, and maintained insertion pressure through initial set, and the 8" branch socket is a larger bonding surface requiring the same or greater assembly rigor as the 6" run sockets; the direction of the 8" branch port — perpendicular to the run axis — must be confirmed against the system's piping layout by dry-fit before any cement is applied, because the 8" collection or distribution header's routing direction relative to the two 6" run pipe routing directions is fixed by the fitting body's geometry at cement application and cannot be adjusted after the initial set time; the collinear alignment of the two 6" run ports must also be confirmed against the routing directions of both 6" connected pipe runs before cement application, because both run connections are made simultaneously with the branch socket's orientation and all three routing directions are committed at the same time; at the 801-536, the three-socket assembly commits the routing directions of two different pipe sizes — two 6" collinear runs and one 8" perpendicular branch — simultaneously, and all three routing directions must be correct relative to the downstream piping layout before any cement is applied to any of the three socket connections. Deburr and bevel all three pipe ends before cementing to ensure consistent insertion depths and complete circumferential bond lines at every socket joint.

The schedule selection decision at the 801-536 follows the engineering framework applied across all Schedule 80 PVC socket fitting pages in the Maxx-Supply catalog. Schedule 80 is the correct specification where the system's operating pressure, surge allowance, engineering safety margin, and material class identification requirements mandate the Schedule 80 wall thickness and gray material class at the three-way bullhead junction location — the conditions that establish Schedule 80 as the governing specification over Schedule 40 at the large-diameter primary distribution and collection junction service level. At the 6" x 6" x 8" bullhead tee size — where all three ports are large-diameter connections operating at full system pressure simultaneously and where the head-on confluence turbulence at the bullhead junction body produces structural loading conditions that are distinct from standard lateral tee configurations — the Schedule 80 specification is confirmed by the system's operating pressure and safety margin requirements, the gray material class identification requirement for inspection and asset management documentation, and any system-wide specification mandating Schedule 80 PVC throughout the primary distribution and collection system.

NSF 61 certification lists this fitting for potable water contact, and NSF 14 covers compliance with applicable plastics piping material standards. ASTM D2467 governs Schedule 80 PVC socket fittings and defines the manufacturing, dimensional, and pressure performance requirements the 801-536 is produced to. Verify manufacturer pressure rating documentation for the specific bullhead tee configuration before final system specification — at the 6" x 6" x 8" Schedule 80 PVC bullhead tee configuration, the governing pressure rating is determined by the fitting's tested performance at this large-diameter oversized-branch bullhead geometry under the combined pressure loading and head-on confluence turbulence conditions of bullhead collection and distribution service, and must be confirmed against the manufacturer's published pressure-temperature rating table for SKU 801-536 before installation in systems at or near the fitting's rated pressure ceiling.

Key Features:

• Schedule 80 gray PVC bullhead tee — 6" x 6" run x 8" branch, all socket (slip) ends; Spears 801 series Schedule 80 PVC socket tee
• Bullhead configuration — branch (8") LARGER than run (6"); 133% branch-to-run ratio; geometric inverse of all standard reducing tee configurations in the Schedule 80 PVC socket line; branch is the hydraulically dominant port
• Purpose-built for two-to-one collection and one-to-two distribution at the 6"/8" pipe size infrastructure interface — no standard reducing tee, equal tee, or wye in the Schedule 80 PVC socket line can serve this junction role
• Primary collection role: two converging 6" flow streams from opposite collinear directions combine at the bullhead junction body and exit through the single 8" perpendicular collection branch; combined 6" run cross-sectional area (≈56.5 sq in) slightly exceeds 8" branch area (≈50.3 sq in) — modest velocity increase at collection branch; hydraulic engineer must obtain pressure loss coefficient from manufacturer bullhead-specific data, not standard lateral tee data
• Distribution role: single 8" supply from branch divides into two 6" collinear run paths discharging in opposite directions; symmetric flow division requires equal downstream resistance on both 6" run paths — confirm downstream resistance balance in hydraulic design before installation in distribution orientation
• Three large-diameter socket connections on same fitting body — both 6" run sockets and 8" branch socket require full heavy-body cement and large-diameter assembly discipline; all three routing directions committed simultaneously at cement application; confirm all three pipe routing directions by dry-fit before any cement is applied
• Interface fitting between 6" large-commercial primary distribution infrastructure and 8" large-commercial primary transmission and collection infrastructure — both run and branch connections are primary-scale pipe sizes requiring primary main engineering rigor throughout
• Manufactured to ASTM D2467 — 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 bullhead junction
• Cell classification PVC 12454 per ASTM D1784
• 8" branch socket orientation perpendicular to 6" run axis — confirm branch port's downstream routing direction against piping layout before cement application; branch orientation fixed at initial set
• Heavy-body solvent cement required at all three socket connections; full cure time compliance mandatory before pressurization
• Pressure rating: verify against manufacturer pressure-temperature table for SKU 801-536; use bullhead-tee-specific hydraulic resistance data for friction loss calculations — standard lateral tee coefficients do not apply

Specifications:

Industries & Applications:

• Municipal Well Field — Primary Collection Header Two-to-One Collection and One-to-Two Distribution at 6"/8" Infrastructure Interface — The 6" x 6" x 8" Schedule 80 PVC bullhead tee is specified at three-way junction points in municipal and commercial well field primary collection systems where two parallel 6" well cluster sub-collection mains must combine their combined well output into a single 8" primary collection header through a single manufactured Schedule 80 PVC all-socket fitting body — well field primary collection configurations where two groups of production wells, each served by a 6" Schedule 80 PVC sub-collection main, converge at a single collection junction point requiring a single fitting body to accept both 6" sub-collection flows simultaneously and discharge the combined collection flow into an 8" primary collection header for transmission to the well field pump station or treatment system; the 801-536 provides the only manufactured Schedule 80 PVC all-socket fitting that accomplishes this two-to-one 6"-to-8" collection junction in a single fitting body — eliminating the alternative field-fabricated collection manifold assembly that would require two separate lateral tee fittings, two spool pieces, and multiple additional socket joints to accomplish the same two-source collection function at the 6"/8" pipe size interface; in the collection orientation, flow from both 6" well cluster sub-collection mains enters the bullhead tee body simultaneously from opposite collinear directions — the combined well output of both well clusters converges at the fitting body's head-on confluence zone and is redirected through the 8" branch port into the primary collection header — providing a compact, hydraulically direct, single-fitting-body collection junction whose physical footprint in the well field's collection infrastructure is the minimum achievable at the 6"/8" collection interface in Schedule 80 PVC socket construction; the hydraulic design of the well field's collection system must include the 801-536's bullhead-specific pressure loss coefficient in the collection header's friction loss calculation — the head-on confluence hydraulics at the bullhead tee collection junction produce pressure losses that differ from standard lateral tee coefficients, and using lateral tee coefficients will underestimate the actual pressure loss at the collection junction and overestimate the available head at the 8" collection header's discharge; the 801-536 is also used in the distribution orientation at well field distribution headers where a single 8" primary distribution supply from the pump station must divide into two parallel 6" distribution runs serving parallel well field service sectors of approximately equal demand — the symmetric 6"/6" run geometry providing natural flow division balance between the two 6" distribution paths where the downstream service sectors' hydraulic resistances are approximately equal; Schedule 80 construction handles well pump operating pressures, shut-off head conditions, and surge pressures at well field primary collection and distribution junction points where the combined pressure loading across three large-diameter socket connections at the bullhead tee body requires the Schedule 80 wall thickness at this service level; NSF 61 listing confirms potable water fitness at every well field primary collection and distribution bullhead tee junction
• Pump Station — Primary Header Two-to-One Return Collection and One-to-Two Discharge Distribution at 6"/8" Interface — Installed at three-way junction points in large pump station primary header systems where two parallel 6" pump return, suction, or discharge connections must combine into a single 8" primary header connection — or where a single 8" primary supply must divide into two parallel 6" pump connections — through a single manufactured Schedule 80 PVC all-socket bullhead tee body; pump station primary suction header configurations where two parallel 6" pump unit suction connections converge at a single 8" primary suction supply branch through the bullhead tee's collection geometry — the two pump units drawing from a common 6" sub-suction lateral each, with both 6" sub-suction flows collecting through the bullhead tee into the 8" primary suction header that connects to the pump station's suction source; pump station primary discharge manifold configurations where an 8" primary discharge header must divide into two parallel 6" pump unit discharge connections serving two parallel pump units whose combined discharge capacity is supplied from the 8" primary discharge branch through the bullhead tee's distribution geometry; pump station primary recirculation or bypass header configurations where two parallel 6" bypass or recirculation connections from opposite header directions must combine into a single 8" primary bypass or recirculation header through the bullhead tee collection junction; and pump station chemical injection and treatment primary supply configurations where two parallel 6" chemical treatment distribution runs supply chemical from opposite directions toward a common collection point that discharges into an 8" primary chemical treatment manifold header; at pump stations where the primary header system requires the 6"/8" bullhead junction for collection or distribution service, the 801-536's Schedule 80 construction must satisfy the pump station's operating pressure, shut-off head, surge, and safety margin requirements at the 6" x 6" x 8" bullhead junction — the combined pressure loading at three large-diameter socket connections under full pump operating pressure conditions makes Schedule 80's higher pressure ceiling relative to Schedule 40 particularly consequential at pump station primary header bullhead junction service; the bullhead-specific hydraulic resistance at the collection junction must be confirmed from manufacturer data and included in the pump station's header system hydraulic design before the 801-536 is specified at a primary header collection junction point
• Water Treatment Plant — Primary Collection and Distribution Header Two-to-One Flow Collection and One-to-Two Distribution at 6"/8" Interface — Used at three-way junction points in water treatment plant primary process collection and distribution headers where the bullhead tee's two-to-one collection or one-to-two distribution geometry serves specific process flow management requirements — filter gallery primary effluent collection configurations where two parallel 6" filter bank effluent collection runs from opposite filter gallery sections converge at a single 8" primary effluent collection header through the bullhead tee's collection junction, consolidating the combined filtered effluent flow from both filter gallery sections into a single 8" primary effluent header for transmission to the clearwell or further treatment processes; primary influent distribution configurations where an 8" primary influent supply must divide into two parallel 6" filter gallery influent distribution runs serving parallel filter gallery sections of equal hydraulic loading — the bullhead tee's symmetric 6" run geometry providing the natural hydraulic balance between two parallel filter gallery influent distribution paths of equal flow design; backwash primary supply distribution configurations where an 8" primary backwash supply must divide into two parallel 6" filter bank backwash supply connections serving two parallel filter banks simultaneously through a single bullhead tee distribution junction; plant service water and process water primary collection configurations where two parallel 6" process water return or collection runs from opposite plant sections converge at a single 8" primary return or collection header through the bullhead tee collection junction; and clearwell primary effluent collection configurations where two parallel 6" clearwell inlet distribution runs from opposite directions collect into a single 8" primary clearwell supply header through the bullhead tee's head-on confluence collection geometry; NSF 61 listing confirms potable water fitness at every water treatment plant primary process collection and distribution bullhead tee junction in Schedule 80 PVC systems; the bullhead-specific hydraulic resistance coefficient is a required input for the treatment plant's primary process header friction loss calculations at each 801-536 collection junction location
• Large Commercial & Agricultural Irrigation — Primary Transmission Main Collection and Two-to-One Sector Supply Collection at 6"/8" Interface — Specified at three-way junction points in large commercial irrigation primary transmission and collection systems where the 801-536's two-to-one collection or one-to-two distribution geometry serves the irrigation system's sector supply collection and primary main distribution requirements — irrigation primary collection configurations at pump station return headers where two parallel 6" irrigation sector return mains from opposite distribution sectors converge at a single 8" primary return collection header through the bullhead tee collection junction at the pump station's return manifold — consolidating the irrigation system's return flow from two major distribution sectors into a single 8" primary return header for the pump station's recirculation or discharge; irrigation primary distribution configurations where an 8" primary irrigation supply from the pump station must divide into two parallel 6" sector transmission mains serving opposite irrigation sectors of approximately equal design flow demand — the bullhead tee's symmetric 6" run geometry providing the natural hydraulic basis for equal flow division to two parallel sector transmission systems of equal design demand when the two downstream sectors are designed to equal hydraulic resistance; large-acreage agricultural irrigation primary collection configurations where two parallel 6" field sub-collection mains from adjacent major field sectors converge at a single 8" primary collection header through the bullhead tee collection junction — a collection configuration that appears at the boundaries between major field sectors where the adjacent sector sub-mains converge at the primary collection header's nearest junction point; and golf course or resort irrigation primary main distribution configurations where an 8" primary distribution supply must divide into two parallel 6" sector transmission mains serving opposite course or resort property sectors through a single bullhead tee distribution junction at the primary main's sector supply branch point; engineered thrust restraint is required at buried 801-536 installations where the 8" branch connection's thrust force under primary main operating pressure must be accommodated by an engineered concrete thrust block designed for the bullhead-tee-specific force magnitude and direction at the site's burial conditions and operating pressure
• Industrial Process Piping — Primary Header Two-to-One Process Return Collection and One-to-Two Supply Distribution at 6"/8" Interface — Specified at three-way junction points in 6"/8" primary process header collection and distribution configurations in manufacturing plants, chemical processing facilities, and heavy industrial environments where two parallel 6" process lines must converge into a single 8" primary process header or a single 8" primary supply must divide into two parallel 6" process distribution paths — cooling water primary return collection configurations where two parallel 6" heat exchanger bank return mains from opposite equipment zones converge at a single 8" primary return collection header through the bullhead tee collection junction, consolidating the combined heat exchanger return flow from both equipment zones into the 8" primary return header for recirculation or discharge; process water primary supply distribution configurations where an 8" primary process water supply must divide into two parallel 6" equipment section supply runs serving two parallel major equipment sections of approximately equal process water demand through a single bullhead tee distribution junction; plant utility water primary collection configurations where two parallel 6" utility water return runs from opposite plant sections converge at a single 8" primary utility water return collection header through the bullhead tee's head-on collection junction; chemical process primary collection configurations where two parallel 6" process stream collection runs from parallel production sections converge at a single 8" primary process collection header at the production area boundary; and cooling tower primary return collection configurations where two parallel 6" cooling tower cell return runs from adjacent tower bays converge at a single 8" primary return collection header through the bullhead tee's two-to-one collection geometry; the bullhead-specific hydraulic resistance coefficient is a required input for the industrial process primary header friction loss calculations at each 801-536 collection or distribution junction location — process systems where primary header pressure budgets are formal engineering design parameters require the accurate bullhead tee pressure loss contribution rather than an approximated lateral tee coefficient; Schedule 80 gray PVC construction provides the chemical resistance, structural wall thickness, and permanent material class documentation required at large-diameter primary header bullhead junction points in industrial process piping systems where Schedule 80 is the system-wide material standard
• Municipal Water Distribution — Primary Distribution Main Two-to-One Collection and One-to-Two Zone Supply Distribution at 6"/8" Interface — Installed at three-way bullhead junction points in municipal water distribution primary mains where the 6"/8" two-to-one collection or one-to-two distribution role serves the distribution system's collection or symmetric zone supply requirements — primary distribution main collection configurations at district metering area boundaries where two parallel 6" distribution main segments from opposite district meter areas converge at a single 8" transmission main connection through the bullhead tee collection junction — a collection configuration that appears at the boundary of two adjacent district metering areas where both 6" distribution main endpoints terminate at the same physical location and must be collected into the 8" transmission main through a single fitting body; primary transmission main distribution configurations where an 8" transmission main supply must divide into two parallel 6" primary distribution mains serving two adjacent pressure zones or distribution sectors of approximately equal demand through a single bullhead tee distribution junction — the symmetric 6" run geometry providing the natural hydraulic basis for approximately equal zone supply flow division to both distribution sectors when the two downstream zones are designed to equal hydraulic resistance; primary main interconnection configurations where two parallel 6" distribution system segments from adjacent service areas must be interconnected through a common 8" transmission main connection using the bullhead tee's three-port geometry; and booster station primary distribution configurations where an 8" booster station discharge must divide into two parallel 6" primary distribution mains serving the boosted pressure zone from two opposite supply directions through a single bullhead tee distribution junction at the booster station's discharge manifold; NSF 61 listing confirms potable water fitness at every municipal water distribution bullhead tee junction; the project's civil engineer must confirm the bullhead-specific pressure loss contribution and the engineered thrust block requirements at each buried 801-536 installation in the municipal water distribution primary main system before construction begins