Cross, Slip x Slip x Slip x Slip PVC Schedule 80 3" (820-030)

The 3" PVC Schedule 80 Cross (Slip x Slip x Slip x Slip) is a heavy-duty thermoplastic four-way fitting designed for industrial piping systems that require a single junction point where flow is simultaneously distributed or collected across four directions. With slip socket connections on all four outlets — two inline run connections and two opposing branch connections perpendicular to the run — this fitting installs permanently via PVC solvent cement on all four ends, creating a pressure-tight, full-bore assembly at the intersection point.

The cross fitting is among the least common standard fittings in PVC piping catalogs, and for good reason: four-way intersections in piping systems require careful hydraulic planning. Unlike a tee, where flow splits between one run and one branch, a cross divides or collects flow across two axes simultaneously — a geometry that introduces competing flow paths, pressure differentials, and potential for turbulence at the intersection body that must be accounted for in system design. When specified correctly, however, a cross fitting consolidates what would otherwise require two tees and an intervening pipe section into a single compact fitting body, reducing the overall fitting count, minimizing the linear space consumed by the junction, and eliminating two additional solvent-weld joints from the assembly.

In Schedule 80 PVC, crosses are most commonly found in chemical distribution manifolds, process flow headers, irrigation zone distribution blocks, and industrial systems where a central four-way junction point is a deliberate design feature rather than an incidental layout convenience. The 3-inch size is well-suited to systems where the flow volumes at the junction are substantial enough to warrant full-bore four-way distribution but where the downstream branches operate at a size that remains practical for individual equipment connections, valve assemblies, or lateral runs. The Schedule 80 wall section provides the elevated pressure rating, greater mechanical strength at the fitting body, and improved resistance to chemical exposure required in industrial service — all of which carry particular relevance at a cross fitting, where the intersection geometry concentrates stress across a more complex fitting body than a standard tee or elbow.

All four slip socket connections are sized for Schedule 80 PVC pipe and designed for solvent cement installation per ASTM D2564 procedures. Manufactured to ASTM D2467 standards and fully compatible with Schedule 80 PVC pipe throughout its rated pressure and temperature range.

Specifications:

Industries & Applications:

• Chemical Distribution Manifolds — The primary industrial application for a Schedule 80 cross; used as the central junction point in chemical distribution headers where a single fitting body must simultaneously supply or collect flow across four lines in a chemical processing, water treatment, or industrial fluid handling system
• Water & Wastewater Treatment — Applied in treatment plant process piping where a 3-inch four-way junction distributes flow to multiple treatment stages, chemical injection circuits, or filtration units from a common header point — consolidating what would otherwise require two tees and an intervening spool into a single compact fitting
• Industrial Process Piping & Pipe Racks — Specified in process plant pipe racks and mechanical room assemblies where a four-way distribution or collection point is required at a defined location in the layout and the cross fitting's compact footprint is preferable to a two-tee equivalent assembly occupying greater linear space
• Irrigation Zone Distribution — Incorporated in irrigation mainline and submain distribution assemblies where a single 3-inch junction point feeds four zone laterals simultaneously — a common configuration in grid-pattern irrigation layouts on golf courses, sports fields, and large commercial landscapes
• Fire Suppression & Deluge Systems — Used in industrial fire suppression and deluge system headers where Schedule 80 PVC is specified for chemical resistance and a four-way distribution fitting is required at a zone junction to supply multiple branch lines from a single header connection point
• Pump & Equipment Testing Manifolds — Incorporated in test bench and equipment qualification manifolds where a cross fitting provides a compact four-port junction for connecting multiple measurement instruments, flow paths, or pressure monitoring connections to a single 3-inch process line simultaneously