45 Degree Elbow, Slip x Slip PVC Schedule 40 4" (417-040)

The 417-040 is a 4" PVC Schedule 40 45 degree elbow in a slip x slip (socket x socket) configuration. Both ends accept 4" plain-end pipe for solvent welding, producing a permanent, chemically fused joint on both sides of the fitting. The 45° bend delivers a moderate directional change in the pipe run — steeper than a 22-1/2° offset but significantly more gradual than a 90° elbow — making it the preferred choice when a smooth, low-resistance change of direction is needed without the full perpendicular turn of a standard elbow.

The 45° elbow is one of the most versatile fittings in large-diameter PVC piping. In drainage and gravity-flow applications, the shallower bend angle supports better flow characteristics through the direction change compared to a 90° elbow, reducing the risk of solids buildup and flow restriction at the bend. In pressure piping, the 45° geometry produces less turbulence and pressure drop than a 90° turn, making it the preferred elbow where maintaining flow efficiency through the directional change is a design consideration. At 4", these flow dynamics are especially relevant — the larger the pipe diameter, the more consequential the choice of elbow angle becomes for overall system performance.

The 417-040 is also routinely used in combination with other fittings to achieve compound routing solutions: two 45° elbows can produce a parallel offset across a short section of pipe, and a 45° paired with a 90° allows routing around obstacles that require a diagonal approach before a perpendicular turn.

Manufactured from virgin PVC compound to Schedule 40 dimensional standards, the 417-040 delivers solid pressure ratings for standard commercial and light industrial service at the 4" diameter. Like all Schedule 40 PVC fittings, it is lightweight, corrosion-proof, and fully resistant to biological fouling and a broad range of chemicals encountered in plumbing, drainage, and process applications.

Specifications:

Industries & Applications:

• Drain, Waste & Vent (DWV) Systems — Routing 4" drain lines around structural members, footings, or subsurface obstructions where the 45° angle supports better gravity flow characteristics than a 90° elbow
• Municipal Water & Wastewater — Directing large-diameter PVC distribution or collection mains around site obstructions or transitions between pipe runs that are not parallel or perpendicular
• Irrigation Systems — Changing direction on 4" Schedule 40 mainlines in commercial or agricultural irrigation infrastructure where a gradual angle change reduces pressure drop and flow disruption at the bend
• Industrial Process Piping — Routing 4" process fluid lines through mechanical spaces with structural or equipment constraints that require a moderate directional change
• Commercial Plumbing — Navigating 4" supply or drain lines around building structure, mechanical equipment, or other services in commercial construction where a 90° turn would conflict with routing geometry
• Agriculture — Offsetting large-bore PVC irrigation mains around subsurface obstructions or transitioning between pipe runs at non-perpendicular angles in field irrigation infrastructure