45 Degree Street Elbow, Slip X Slip 12" PVC Class 125 (C623-120)

The C623-120 is a 12" Class 125 PVC 45° street elbow with a slip socket on one end and a spigot (male slip) on the other. Two defining characteristics combine to make this a highly specific and space-efficient fitting for large-diameter piping systems. First, the street configuration: the spigot end is machined to the same outside diameter as standard IPS pipe, allowing it to insert directly into any compatible 12" slip socket fitting — a tee, coupling, elbow, or valve body — without requiring a separate coupling or adapter between components. Second, the 45° deflection angle: shallower than a 90° elbow and more decisive than a 22-1/2°, the 45° provides a moderate, practical directional change for routing adjustments, obstacle offsets, and angular corrections that fall between the capability of a quarter-bend and a straight run.

At 12" diameter, the street elbow's joint-count and laying-length advantages are particularly meaningful. Every fitting eliminated from a large-diameter assembly removes one solvent-weld joint, reduces the overall system component count, and shortens the total laying length of the piping run. On a 12" main, the difference between a standard elbow with a separate coupling and a street elbow that integrates directly into an adjacent socket is not trivial — it translates to real reductions in material cost, installation labor, and potential leak points, especially when multiple directional changes appear throughout a long-run large-diameter system.

The Class 125 pressure designation confirms this fitting's design envelope: optimized for systems operating at or below 125 PSI at 73°F. At 12", this encompasses the majority of large-diameter PVC piping applications — gravity-flow drainage, low-to-moderate pressure municipal water distribution, large-scale irrigation mains, and stormwater conveyance systems all routinely operate within the Class 125 pressure envelope, making this the cost-effective and appropriately specified alternative to a Schedule 40 equivalent where the higher pressure capacity of the heavier wall fitting is not a system requirement.

The slip socket end accepts standard IPS-dimension 12" PVC pipe bonded with heavy-bodied PVC solvent cement — the correct grade at large diameters where socket depth, coverage area, and assembly time before joint movement are substantially greater than small-bore applications. The spigot end inserts into any compatible 12" slip socket fitting in the system. Manufactured from virgin PVC compound to ASTM D2466, the C623-120 carries the white color standard for PVC pressure fittings and is NSF/ANSI 61 listed for potable water service.

Specifications:

Industries & Applications:

• Municipal Water Distribution — Compact 45° directional changes on 12" water distribution mains, transmission line installations, and pump station headers operating within Class 125 pressure limits; street configuration eliminates the intermediate coupling between the elbow and adjacent socket fitting, reducing joint count and assembly length at each directional change throughout the distribution run
• Large-Scale Irrigation & Agriculture — Moderate-angle routing corrections and obstacle offsets on 12" irrigation supply mains, pivot system primary feed lines, and large agricultural and commercial landscape distribution headers where the street spigot connects directly into adjacent tee, coupling, or valve socket hardware without additional transition components
• Stormwater & Drainage Management — 45° directional changes on 12" gravity-flow stormwater collection, conveyance, and detention system runs where Class 125 pressure capacity meets system design requirements and the compact street elbow format minimizes overall fitting count in underground installations
• Municipal & Commercial Landscape Irrigation — Angular routing adjustments on 12" supply mains for golf courses, sports complexes, parks, and large commercial landscape systems where low-to-moderate operating pressures fall within the Class 125 envelope and space-efficient directional change fittings reduce the component count in prefabricated manifold and header assemblies
• Industrial Cooling & Process Water — Moderate-angle directional changes on 12" low-pressure process water, cooling tower supply, and plant utility fluid headers where Class 125 pressure capacity is sufficient for the system design requirement and the street elbow format reduces assembly complexity at each bend
• Water & Wastewater Treatment — 45° routing corrections on 12" treatment plant distribution headers, gravity-flow process lines, and low-pressure utility water runs where compact fitting assemblies conserve space in equipment rooms and valve vaults
• Aquaculture & Recirculating Systems — Directional changes on 12" supply and return headers in large commercial aquaculture and industrial water treatment facilities operating within Class 125 pressure limits where the street elbow's compact format reduces fitting count in space-constrained equipment rooms and header assemblies
• Fire Suppression Support & Site Utility — 45° directional changes on non-pressure and low-pressure 12" underground utility runs and site water distribution mains on commercial and campus-scale installations where Class 125 fittings are appropriate for the system's operating pressure and the street configuration reduces the number of joints in underground assemblies