90° Degree PVC Reducing Elbow Adhesive Sleeve Pipe Fittings Aquarium Pond Tank

Measure the outer diameter (OD) of both pipes you need to connect. The larger socket dimension corresponds to the larger pipe, and the smaller socket to the smaller pipe. For example, a 50×32 mm elbow accepts a 50 mm OD pipe on one end and a 32 mm OD pipe on the other. Always verify your pipe's actual OD — nominal pipe sizes can differ from measured OD depending on the pipe standard used.

Yes. Rigid PVC is chemically inert to both freshwater and saltwater and is widely used in reef and marine aquarium plumbing. It will not corrode or leach harmful substances into the water column when properly solvent-welded and fully cured before filling.

You will need a PVC primer and a PVC solvent cement rated for the pipe schedule you are using. Apply primer to both the pipe end and the socket interior, then apply cement and push the pipe firmly into the socket with a slight twist. Hold for 30 seconds and allow the joint to cure fully — typically 15–30 minutes before handling and 24 hours before pressurising — following the cement manufacturer's instructions.

These fittings are designed to match standard Schedule 40 PVC pipe OD dimensions. Schedule 80 pipe shares the same OD as Schedule 40 (the wall is thicker on the inside), so the socket fit is compatible. If you are using a non-standard or metric pipe, confirm the actual OD against the socket size listed in the variant before ordering.

The three colours are functionally identical — same PVC material, same socket dimensions, same solvent-weld connection. The colour difference is purely for visual identification. Many builders use White for return lines, Blue for fresh top-off water, and Grey for drain or waste lines, but you can assign any colour convention that suits your build.

Yes. Once properly solvent-welded and cured, the joint is permanent and rated for continuous flow. The smooth internal bore minimises turbulence at the bend, which helps preserve pump head pressure. For high-flow or high-pressure applications, confirm the pressure rating for your specific size variant before installation.

Each variant is sold as 1 piece. If your build requires multiple elbows — for example, routing a return line around two corners — simply select the quantity you need at checkout by adjusting the cart quantity, or contact us if you need bulk pricing for larger projects.