90 Degree Elbow, Slip x Slip PVC Schedule 80 6" x 4" (806-532)

The 6" x 4" PVC Schedule 80 Reducing 90 Degree Elbow (806-532) is a heavy-duty fitting that simultaneously executes a full right-angle direction change and reduces from a 6" slip socket inlet to a 4" slip socket outlet — consolidating what would otherwise require a standard same-size 90-degree elbow followed by a separate 6"x4" reducing coupling into a single, compact, solvent-welded component. This dual-function geometry reduces the installed fitting count at the direction-change-plus-reduction location by one fitting and one solvent-weld joint, producing a more compact assembly with fewer potential leak points and a simpler installation at the transition point.

The relatively moderate reduction ratio between the 6" inlet and the 4" outlet — compared to wider step-downs like 6"x2" — means the 806-532 handles a meaningful secondary flow volume at the outlet, making it well suited not just for instrumentation taps or injection points but for genuine process branch feeds, equipment inlets, and secondary distribution connections where a 4" outlet carries substantial flow. This near-equivalent sizing makes the 806-532 hydraulically significant at the bend — the combination of directional change and diameter reduction produces a transition zone where flow velocity increases and turbulence is introduced simultaneously, factors that warrant consideration in high-velocity or flow-sensitive system designs.

With slip socket connections on both ends, the 806-532 accepts solvent-welded Schedule 80 PVC pipe at the 6" inlet and the 4" outlet — producing a permanently bonded, full-pressure assembly that maintains structural continuity and chemical resistance through the full bend and reduction geometry without threaded interfaces, mechanical connections, or gaskets subject to degradation under pressure cycling, vibration, or chemical exposure.

Manufactured from gray PVC compound meeting ASTM D2467 dimensional standards, the 806-532 delivers Schedule 80's higher pressure rating, increased wall thickness, and broad chemical resistance to acids, caustics, solvents, and oxidizing fluids — providing reliable long-term performance in the industrial, chemical processing, and process piping environments where Schedule 80 reducing elbows at this size combination are most frequently deployed.

Specifications:

Use heavy-bodied solvent cement rated for Schedule 80 PVC on all joints. Confirm that both the 6" and 4" connecting pipe or fittings are Schedule 80 to ensure correct socket interference fit and full rated pressure performance at both ends. The pressure rating differential between the 6" and 4" ends reflects Schedule 80 standard pressure class variation by diameter — system operating pressure must remain within the lower of the two rated values across the full assembly. Thrust restraint or thrust blocking should be evaluated at all 90-degree bends in pressurized buried systems. 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 — Direction change and inline size reduction at a single location on a 6" Schedule 80 chemical supply header, combining the 90-degree turn with a step-down to a 4" process branch, reactor inlet, or secondary distribution line in corrosive acid, caustic, or oxidizing fluid service where Schedule 80 chemical and pressure ratings are required through the full bend and reduction zone
• Industrial Process Piping — Pump discharge headers, skid boundary transitions, and equipment connection points where large-bore Schedule 80 supply piping must simultaneously change direction and reduce to a 4" process line, equipment inlet, or parallel circuit feed without a two-fitting elbow-plus-reducer assembly
• Industrial Wastewater & Effluent Handling — Direction changes at neutralization tank outlets, collection header terminals, and transfer system boundaries where a 6" Schedule 80 pressurized or gravity line must turn and step down to a 4" discharge, transfer, or secondary treatment connection
• Water & Wastewater Treatment — Process piping direction changes at filter headers, chemical feed manifolds, and aeration supply boundaries where Schedule 80 construction is specified and the piping must simultaneously change direction and reduce in size at equipment or process connection points requiring a meaningful 4" secondary flow capacity
• Semiconductor & Electronics Manufacturing — Ultra-pure water (UPW) and chemical distribution systems where Schedule 80 PVC is the material of record and combined direction-change-plus-reduction transitions occur at skid boundaries, manifold outlets, or equipment inlet connections where 4" outlet capacity is required for process flow volumes
• Plating & Metal Finishing — Acid, caustic, and process chemical supply piping requiring a corrosion-resistant, pressure-rated combined direction change and size reduction from a 6" supply header to a 4" tank inlet, treatment station feed, or recirculation branch in aggressive surface finishing environments
• Industrial Cooling & HVAC Systems — Cooling tower chemical treatment mains and condenser water distribution systems requiring a Schedule 80 combined elbow and size reduction at equipment connection points, secondary cooling circuit inlets, or parallel circuit branch feeds where 4" outlet capacity is required
• Power Generation Facilities — Demineralized water, chemical treatment, and cooling system piping where large-bore Schedule 80 mains require a combined right-angle turn and step-down to 4" process, secondary distribution, or equipment supply lines at facility boundary transitions or mechanical room entry points