Bushing, Spigot x Slip (Flush Style) — PVC Schedule 80 | 8" x 2" (837-578)

Meta Title: 8" x 2" PVC Schedule 80 Bushing Spigot x Slip Flush Style | 837-578

Meta Description: Shop the 8" x 2" PVC Schedule 80 Flush Style Bushing (837-578) with spigot OD and slip socket ID. Thicker walls and higher pressure rating for demanding industrial, chemical, and process piping reductions. Order at Maxx-Supply.

Product Description:

The 8" x 2" PVC Schedule 80 Bushing (837-578) is a flush-style, spigot x slip fitting that reduces from an 8" spigot outside diameter to a 2" slip socket in a single, solvent-welded component — engineered for high-pressure and chemically aggressive piping systems where Schedule 40 construction is insufficient for the service demands. The flush style design seats the bushing fully within the receiving 8" Schedule 80 socket fitting, producing a clean, shoulder-free profile that eliminates the external protrusion of hex head bushing alternatives and suits installations where clearance, neatness of assembly, or access constraints make a low-profile reduction preferable.

The spigot x slip connection configuration precisely defines this bushing's role in the piping system: the 8" spigot OD — dimensioned to match the outside diameter of 8" Schedule 80 pipe — cements directly and securely into any standard 8" Schedule 80 socket fitting, while the 2" slip socket ID accepts any standard 2" Schedule 80 slip pipe or fitting via solvent weld. The all-solvent construction on both ends produces a permanently bonded, leak-free assembly with no threaded interfaces subject to loosening, galling, or leakage under pressure cycling, vibration, or thermal movement.

The pronounced size differential between the 8" spigot and 2" socket positions the 837-578 as a purpose-specific transition fitting — most commonly deployed where a large-diameter Schedule 80 main, manifold outlet, or vessel nozzle must be reduced directly to a smaller process branch, chemical injection line, instrumentation connection, or secondary feed without assembling a chain of intermediate reducing fittings. Manufactured from gray PVC compound meeting ASTM D2467 dimensional standards, the 837-578 delivers Schedule 80's higher pressure rating, increased wall thickness, and broad resistance to acids, caustics, solvents, and oxidizing chemicals — providing reliable long-term performance in the demanding industrial and process environments where this size and schedule combination is most frequently specified.

Specifications:

Use heavy-bodied solvent cement rated for Schedule 80 PVC on all joints. The 8" spigot OD is dimensioned to the outside diameter of 8" Schedule 80 pipe — confirm the receiving fitting is a Schedule 80 socket to ensure correct interference fit and joint integrity. Pressure-temperature derating applies at elevated service temperatures per ASTM standards. Verify chemical compatibility for non-water service prior to installation.

Industries & Applications:

• Chemical Processing & Transfer — Reducing an 8" Schedule 80 process manifold, vessel nozzle, or supply header directly to a 2" chemical feed line, metered dosing branch, or secondary process inlet in corrosive fluid service
• Industrial Wastewater & Effluent Handling — Transitioning from a large-diameter Schedule 80 collection or neutralization header to a 2" discharge branch, drain connection, or transfer line without intermediate reducer fittings
• Water & Wastewater Treatment — Process piping reductions at chemical feed headers, filter influent manifolds, aeration distribution systems, and instrumentation tap locations where Schedule 80 pressure and chemical ratings are specified
• Semiconductor & Electronics Manufacturing — Ultra-pure water (UPW) and chemical distribution skids where Schedule 80 PVC is the material of record and large-bore manifold connections require reduction to 2" process branch or delivery lines
• Plating & Metal Finishing — Acid, caustic rinse, and process chemical piping systems requiring a corrosion-resistant, pressure-rated reduction from an 8" supply header to a 2" tank inlet, rinse line, or recirculation branch
• Industrial Cooling & HVAC Systems — Cooling tower chemical treatment distribution or condenser water mains requiring a 2" branch reduction at Schedule 80 service conditions for chemical injection, bleed-off, or monitoring connections
• Power Generation Facilities — Demineralized water, chemical treatment, and cooling system piping where large-bore Schedule 80 headers require reduction to 2" instrumentation, sampling, or secondary process lines
• Pulp, Paper & Food Processing — Process fluid headers and CIP (clean-in-place) distribution systems where Schedule 80 pressure performance and chemical resistance combine with a large-to-small bore transition at manifold or equipment connection points