Bushing, Spigot x Slip (Flush Style) PVC Schedule 80 6" x 1-1/4" (837-526)

The 6" x 1-1/4" PVC Schedule 80 Flush Bushing (837-526) transitions a 6" solvent-welded socket connection down to a 1-1/4" slip outlet in a single compact fitting — with a flush-style profile that seats fully recessed within the mating 6" socket rather than projecting outward from its face. The spigot end solvent-welds permanently into any standard 6" Schedule 80 slip socket upstream, while the 1-1/4" slip outlet accepts standard 1-1/4" Schedule 80 pipe or a 1-1/4" spigot fitting for a permanent solvent-welded joint downstream.

The spigot x slip configuration means both ends of the 837-526 are solvent-welded — distinguishing it from the threaded 838-series counterparts where the small-end outlet accepts a male pipe thread for a removable downstream connection. The all-slip assembly is the correct specification when the downstream 1-1/4" connection is a fixed, permanent element of the system design: a dedicated instrument supply line, a fixed chemical injection run, a permanent vent or drain connection, or a small-diameter service line that will not require removal or replacement over the system's service life. By eliminating thread engagement at the small-end joint, the 837-526 produces a transition point with consistent solvent-weld integrity across both connections — no pipe thread sealant, no thread engagement variability, and no risk of thread galling or loosening under sustained pressure or chemical exposure.

Positioned one step up in outlet size from the 837-524 (3/4"), the 837-526 suits applications where the downstream permanent run carries slightly more flow than a 3/4" line can accommodate — small recirculation loops, fixed equipment supply lines, dedicated instrument manifold feeds, or permanent branch runs where 1-1/4" is the specified downstream pipe size. The flush-style profile keeps the full assembly recessed within the 6" socket, avoiding the clearance and installation constraints that a protruding hex bushing would introduce at this size differential in tight mechanical spaces or close-coupled equipment configurations.

At a 6" inlet to 1-1/4" outlet, this bushing achieves a pronounced size step-down in a single fitting — a transition that would otherwise require chaining multiple intermediate reducer bushings or fittings to accomplish. Manufactured to Schedule 80 specifications and dimensionally compliant with ASTM D2467, the 837-526 delivers the elevated wall thickness and pressure rating that Schedule 80 gray PVC is specified for in chemical processing, industrial fluid handling, and demanding commercial applications. Gray PVC construction provides broad chemical compatibility with acids, alkalis, and industrial process fluids. NSF 61 certification confirms suitability for potable water contact where required.

Specifications:

Industries & Applications:

• Chemical Processing — permanent small-diameter branch connections, fixed injection runs, and dedicated instrument supply lines off 6" process fluid headers where a fully solvent-welded, non-removable transition is specified at the reduction point
• Industrial Process Piping — fixed vent connections, permanent drain lines, and small-diameter dedicated service runs branching from 6" plant utility and process fluid headers where downstream removability is not a design requirement
• Water & Wastewater Treatment — permanent low-flow instrumentation and service connections in treatment plant process piping where a 6" Schedule 80 header transitions to a fixed 1-1/4" downstream run
• Commercial & Industrial Plumbing — tight-clearance permanent size transitions in high-pressure mechanical systems where a fully solvent-welded assembly is preferred and where a hex bushing profile would create interference with adjacent piping or equipment
• Aquaculture & Food Processing — permanent corrosion-resistant reducing transitions at fixed equipment supply, monitoring, and vent connections in recirculating systems and chemical-exposure fluid handling installations
• Irrigation & Agriculture — permanent chemical injection runs and fixed instrument supply connections off 6" high-pressure Schedule 80 mainline headers where non-removable downstream 1-1/4" connections are specified