90 Degree Elbow, Slip x Slip PVC Schedule 80 4" x 3" (806-422)

The 4" x 3" PVC Schedule 80 90° Reducing Elbow (806-422) combines a 90° directional change with an inline size reduction from 4" to 3" in a single solvent-welded fitting — eliminating the need for a separate 90° elbow and reducing coupling in sequence wherever a system layout requires both a direction change and a diameter transition at the same point. Both ends use slip (socket) connections for permanent, pressure-rated joints that maintain the full structural integrity of a Schedule 80 gray PVC assembly throughout.

The practical value of a reducing elbow over a standard elbow-plus-coupling assembly is most apparent in space-constrained installations and congested mechanical rooms where every inch of pipe run matters. By consolidating two fittings into one, the 806-422 shortens the overall assembly at the turn point, reduces the total joint count by one solvent-weld connection, and eliminates a potential leak point at what would otherwise be an intermediate coupling between the elbow and the size transition. In industrial process piping and chemical handling systems — where Schedule 80 is specified precisely because system reliability under sustained pressure and chemical exposure is non-negotiable — reducing the joint count at any transition point is a meaningful engineering and maintenance advantage.

The 4" inlet and 3" outlet configuration suits systems where a primary 4" header or distribution run must turn a corner and step down to a 3" continuation run simultaneously — a common layout requirement in plant utility headers, chemical distribution systems, and large commercial mechanical rooms where pipe routing must navigate structural elements, equipment footings, or spatial constraints while also transitioning between pipe sizes at a deliberate point in the system design.

Manufactured to Schedule 80 specifications and dimensionally compliant with ASTM D2467, the 806-422 delivers the elevated wall thickness and increased 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 a wide range of industrial process fluids. NSF 61 certification confirms suitability for potable water contact where required.

Specifications:

Industries & Applications:

• Chemical Processing — combined directional change and size reduction at turns in chemical feed, dosing, and process fluid distribution headers where a compact, single-fitting transition is preferred over a two-fitting elbow-and-coupling assembly
• Industrial Process Piping — 90° routing transitions with simultaneous diameter step-down in plant utility, cooling water, and recirculating process systems requiring Schedule 80 pressure and chemical performance
• Water & Wastewater Treatment — directional and size transitions in treatment plant process piping where a 4" to 3" step-down at a 90° turn is specified and Schedule 80 is required for pressure or chemical compatibility
• Commercial & Industrial Plumbing — space-efficient combined turn-and-reduce fittings in high-pressure mechanical rooms and equipment rooms where a two-fitting assembly would exceed available installation clearance
• Aquaculture & Food Processing — corrosion-resistant directional transitions with inline size reduction in recirculating systems and chemical-exposure fluid handling installations
• Irrigation & Agriculture — 90° routing turns with simultaneous size reduction in high-pressure chemical injection and primary distribution headers where layout constraints require both changes at the same point