50mm Metric 45° Elbow Fitting
SKU: PVC-EL45-50
• Precision-molded 45° angle provides a smoother water path than standard 90° bends
• Designed for 50mm metric PVC pipe (approx. 2" OD), common on high-capacity Reef Octopus skimmer outlets
• High-impact, heavy-walled grey PVC construction built for permanent marine submersion
• Deep slip-fit sockets ensure a secure, high-strength connection via solvent welding
• Ideal For: Commercial skimmer discharge; high-flow return manifolds; 50mm metric drain lines
50mm Metric 45° Elbow Fitting
The 50mm Metric 45° Elbow is a robust plumbing component engineered for high-volume water management in professional aquarium and aquaculture installations. This fitting is sized specifically for 50mm Metric PVC pipe, which is the primary diameter used for the main output assemblies and recirculating loops on large-scale Reef Octopus protein skimmers and professional European-spec life support systems.
In large-scale aquatic engineering, 45-degree elbows are essential for minimizing "head loss"—the friction-based resistance that occurs at sharp turns. By utilizing a more gradual 45-degree transition, you preserve water velocity, reduce the workload on your pumps, and significantly quiet the sound of rushing water in high-diameter pipes. Constructed from industrial-grade, saltwater-safe grey PVC, this elbow features a precision-molded internal bore that resists the accumulation of detritus and ensures a permanent, leak-proof bond when solvent-welded.
Key Features
• True Metric Calibration: Fits 50mm OD metric pipe—essential for maintaining factory Reef Octopus commercial plumbing.
• Flow-Optimized Geometry: 45° bend lowers backpressure compared to standard 90° fittings, extending pump life.
• Industrial Grade PVC: Thick-walled construction designed to withstand the vibrations and high-flow demands of large pump rooms.
• Non-Corrosive: 100% saltwater safe and won't leach chemicals, making it ideal for delicate reef ecosystems.
• Deep Socket Design: Slip x Slip configuration provides a massive surface area for a secure solvent weld.
Ideal For
• Large Skimmer Modifications: Customizing the discharge of 50mm-diameter Reef Octopus skimmers to reduce splash and bubbles.
• Commercial Return Lines: Routing high-volume flow for aquariums 300 gallons and larger.
• Centralized Filtration: Creating professional, low-restriction plumbing manifolds for massive life support systems.
Images shown are representative of the product family. Materials, sizes, and configurations may vary.
What’s Included: • (1) 50mm Metric 45° Elbow Fitting
Specifications:
• Size: 50mm
• Angle: 45 Degrees
• Connection Type: Slip x Slip (Socket)
• Material: High-grade Grey PVC
• Compatibility: 50mm Metric Pipe ONLY
- Ensure the 50mm metric pipe is cut square and the edges are deburred with a tool or sandpaper.
- Perform a dry-fit of the 45° elbow to verify the alignment of your plumbing run.
- Apply a coat of PVC primer to the pipe end and the internal socket of the fitting.
- Apply a liberal layer of PVC solvent cement to both the pipe and the elbow.
- Insert the pipe into the fitting and give it a slight quarter-turn to ensure the adhesive is fully distributed.
- Hold firmly for 30 seconds and allow a minimum cure time of 2 hours before pressure testing.
Pro Tips
Metric vs. USA Standard.
A 50mm metric fitting will not fit standard 1.5" or 2" USA Schedule 40/80 pipe. 50mm is approximately 1.97 inches. Always measure your pipe with a caliper to ensure you are working with metric components before applying adhesive.
The "Long Sweep" Advantage. For maximum efficiency in large systems, use two 50mm 45° elbows separated by a short piece of pipe instead of a single 90° elbow. This creates a gentle curve that allows air and water to move with significantly less noise and turbulence.
Maintain Professional Aesthetics. Since these are high-visibility grey fittings, use a clear PVC primer rather than the purple variety. This results in a much cleaner, more "industrial" appearance that matches the professional aesthetic of high-end reef equipment.