40mm Metric 45° Elbow Fitting
SKU: PVC-EL45-40
• 45° angle provides a more gradual transition than 90° bends, preserving flow velocity
• Sized for 40mm metric PVC pipe (approx. 1.5" OD), the standard for large Reef Octopus discharge assemblies
• High-impact, thick-walled grey PVC construction built for permanent marine use
• Deep-socket slip connections ensure a massive surface area for a leak-proof solvent weld
• Ideal For: Commercial skimmer outlets; high-flow return manifolds; 40mm metric drain lines
40mm Metric 45° Elbow Fitting
The 40mm Metric 45° Elbow is a robust plumbing component designed for high-capacity water management in large reef systems and commercial aquaculture. This fitting is specifically sized for 40mm Metric PVC pipe, which is the primary diameter used for the main discharge and output valves on large-scale Reef Octopus protein skimmers (such as the Regal and Elite series) and high-end European aquarium systems.
Utilizing 45-degree elbows is an industry-best practice for reducing "head loss"—the friction-based loss of flow that occurs at sharp turns. By providing a smoother path for water to travel, this fitting allows your pumps to operate at their full potential, reduces mechanical noise, and minimizes the entrapment of air bubbles in the plumbing. Constructed from industrial-grade, saltwater-safe grey PVC, this elbow features a precision-molded internal bore that resists detritus buildup and ensures long-term reliability.
Key Features
• Precision Metric Calibration: Fits 40mm OD metric pipe—essential for maintaining factory Reef Octopus plumbing.
• Flow-Optimized Geometry: 45° bend lowers backpressure compared to standard 90° fittings, extending pump life.
• Industrial Durability: Heavy-duty PVC construction designed to handle the high-vibration environment of large pump rooms.
• Corrosion Proof: 100% non-metallic and saltwater safe; will not degrade in harsh marine environments.
• Deep Socket Design: Slip x Slip configuration for a permanent, high-strength solvent weld.
Ideal For
• Large Skimmer Modifications: Customizing the output of 40mm-diameter Reef Octopus skimmers to reduce splash.
• Heavy-Duty Return Lines: Routing high-volume flow for aquariums 250 gallons and larger.
• Professional Installations: Creating neat, 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) 40mm Metric 45° Elbow Fitting
Specifications:
• Size: 40mm
• Angle: 45 Degrees
• Connection Type: Slip x Slip (Socket)
• Material: High-grade Grey PVC
• Compatibility: 40mm Metric Pipe ONLY
- Ensure the 40mm 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 angle and 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
Verify Your Metric Size.
A 40mm metric fitting will not fit 1.25" or 1.5" USA Standard Schedule 40/80 pipe. 40mm is approximately 1.57 inches. Always measure your existing pipe with a caliper to ensure you are working with metric components before gluing.
The "Long Sweep" Advantage. For maximum efficiency in large systems, use two 40mm 45° elbows separated by a short piece of pipe instead of a single 90° elbow. This creates a gentle curve that allows water to move with significantly less noise and turbulence.
Maintain a Professional Look. 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 factory aesthetic of Reef Octopus equipment.