22 1/2 Degree Elbow, Slip x Slip PVC Schedule 40 4" (465-040)

The 4" PVC Schedule 40 22-1/2 Degree Elbow Slip x Slip (465-040) provides a shallow, controlled directional change in Schedule 40 PVC pressure piping systems where the abrupt geometry of a 45° or 90° elbow would introduce excessive turbulence, pressure drop, or create an awkward routing alignment. Manufactured from rigid white PVC conforming to ASTM D1785, this elbow is built to the dimensional and pressure standards expected in commercial, municipal, and industrial Schedule 40 PVC applications.

Both ends accept standard Schedule 40 or Schedule 80 PVC pipe via solvent cement, as both schedules share the same outside diameter for any given nominal size. Once solvent-welded, each joint forms a permanent, pressure-rated connection integral to the pipe wall, fully capable of handling the system's rated working pressure and chemical service conditions throughout the life of the installation.

The 22-1/2 degree turn angle is the most gradual of the standard PVC elbow family, producing the lowest flow disturbance and pressure loss of any directional fitting in the PVC pressure elbow range. This makes the 465-040 particularly valuable in large-diameter systems where head loss through the fitting count has a meaningful impact on pump sizing, energy consumption, and system performance. At 4", even modest reductions in fitting pressure drop can influence pump selection and long-term operating costs on municipal, agricultural, and industrial systems running continuously or at high flow rates.

The 22-1/2° elbow is also the preferred choice for gradual offset routing—threading a pipeline around structural members, columns, grade changes, or equipment clearances where a 45° offset would be too aggressive and a straight run is not geometrically possible. Multiple 22-1/2° elbows can be combined with short pipe sections to construct smooth, sweeping transitions and directional changes across longer routing distances, giving designers and contractors flexibility that steeper elbow angles cannot provide. In drainage and gravity-flow applications, the shallow angle maintains consistent invert slope through directional changes, avoiding the flow disruption that sharper elbows can introduce in low-velocity gravity systems.

At 4", this fitting is well-suited for main distribution headers, irrigation mains, pump station piping, large-diameter drainage systems, and commercial mechanical piping where a gradual directional change is specified or preferred. White PVC provides broad chemical resistance to acids, bases, salts, and a wide range of municipal and commercial fluids. For higher-pressure service or more chemically aggressive applications, refer to the Schedule 80 equivalent.

Specifications:

Industries & Applications:

• Water & Wastewater Treatment — Shallow directional changes on large-diameter pump station headers, treatment plant process mains, and distribution system piping where minimizing head loss through fittings is an engineering priority
• Irrigation & Agriculture — Gradual mainline offsets on 4" commercial and agricultural irrigation mains, pump station discharge runs, and filter manifold connections where low-turbulence flow routing reduces pump demand and energy costs
• Municipal Infrastructure — Water distribution, reclaimed water, and drainage system directional changes where a 22-1/2° elbow provides the smooth routing geometry required to navigate structural constraints without a sharp turn
• Commercial Plumbing — Large-diameter commercial pressure and drainage piping offset routing around columns, beams, and mechanical room obstructions where the shallow elbow angle maintains system flow efficiency
• Industrial Manufacturing — Process fluid distribution mains requiring gradual directional changes at equipment layouts, wall penetrations, and structural clearance points in Schedule 40 systems
• Fire Protection & Site Utilities — Large-diameter PVC-permitted utility and site piping systems requiring shallow angular offsets along grade or through structural penetrations
• Aquaculture & Aquatics — Recirculating system supply and return main offsets where minimizing turbulence through large-diameter directional fittings supports flow efficiency and system performance