45 Degree Elbow, FPT x FPT PVC Schedule 80 1-1/4" (819-012)

The 819-012 is a 1-1/4-inch Schedule 80 PVC 45-degree elbow with female pipe thread (FPT) connections on both ends, designed to redirect flow at a 45-degree angle in threaded PVC piping systems. The 45-degree geometry produces a shallower, more gradual direction change than a 90-degree elbow, resulting in lower turbulence, reduced pressure drop, and improved flow efficiency through the fitting — a meaningful advantage on pump suction lines, long process runs, and any system where minimizing head loss is a design priority.

Both ends feature standard female NPT threads that accept male NPT threaded pipe or fittings directly, without solvent cement or specialized tooling. The all-female threaded configuration makes the 819-012 straightforward to install, remove, and replace in serviceable threaded systems — a practical benefit in chemical process, water treatment, and industrial applications where periodic access or reconfiguration is anticipated.

Schedule 80 wall thickness provides a substantially higher pressure rating and greater mechanical strength than Schedule 40 equivalents, making this elbow appropriate for pressurized chemical feed lines, process piping, and utility systems where pipe wall integrity under sustained pressure is specified. Gray PVC construction delivers broad chemical resistance to acids, alkalis, salts, and many industrial process fluids with no corrosion risk in continuously wet or chemically aggressive service.

This fitting is manufactured from virgin PVC compound conforming to ASTM D1784 Cell Classification 12454 and dimensioned to ASTM D2464 standards for Schedule 80 threaded PVC fittings. Thread form conforms to ANSI/ASME B1.20.1 for NPT compatibility across manufacturers.

Specifications:

Pressure rating is for water service at 73°F. Derate for elevated temperatures and aggressive chemical service per manufacturer guidelines. Use PTFE thread tape or appropriate thread sealant on all NPT connections — do not overtighten PVC threaded fittings.

Industries & Applications:

The 819-012 Schedule 80 45-degree FPT x FPT elbow serves industrial, commercial, and process piping applications where a gradual, low-turbulence direction change is needed on 1-1/4-inch threaded PVC lines:

• Chemical Processing & Water Treatment — Gradual direction changes on chemical feed, chlorination, acid dosing, and polymer injection lines where minimizing pressure drop and turbulence at direction changes improves system efficiency and reduces fitting wear
• Industrial Process Piping — Flow routing on reagent distribution, recirculation loops, and process headers where 45-degree offsets are used to navigate around equipment, structural members, or adjacent piping without the abrupt turn of a 90-degree elbow
• Pump Suction & Discharge Piping — 45-degree elbows are frequently preferred over 90-degree bends on pump suction lines where reducing inlet turbulence and pressure drop directly impacts pump performance and cavitation risk
• Municipal & Commercial Plumbing — Utility water and service line routing in mechanical rooms and equipment bays where angled offsets navigate obstructions while maintaining flow efficiency in Schedule 80-specified systems
• Agricultural & Irrigation Systems — Direction changes on pressurized 1-1/4-inch threaded mainlines and pump discharge headers where gradual bends reduce water hammer and pressure loss across long distribution runs
• HVAC & Cooling Systems — Chemical treatment feed lines and condenser water piping offsets where corrosion-resistant, low-turbulence directional fittings extend system service life
• Semiconductor & Electronics Manufacturing — Ultra-pure water and chemical delivery line routing where smooth flow transitions and non-reactive PVC surfaces are both critical