The universal waterfall diffuser is a fast and easy way to create professional looking waterfalls. Waterfall spillways are the perfect choice for ponds as their low profile integrates easily into your stream bed.

These rugged waterfall weirs are also used in pondless systems, swimming pool features and other installations where a cascade of water is desired and waterfall filtration is not needed.Made to last and faster to install than any other spillway on the market. This is  how they work: water enters the diffuser and is depressurized. Water then flows over and under the vertical dividers resulting in an even flow of water at the source point.
 
Instruction Manual & Installation Guide

• Inlets: (2) 2" FPT Spinweld
• Ideal for use at beginning of streams and in block walls, pools and formal fountains.
• Super strong vertical rib design creates a nearly indestructible diffuser.
• Low profile design of 3 1/2" makes them easy to conceal
• Load bearing design allows block to be stacked directly onto diffusers
• Can be used in multiples for wider applications.
• Dual inlets - Easy to cap one off if only one needed
• Made in the USA

2 Sizes of Waterfall Diffuser Weirs Available

16" Waterfall Diffuser Model: UWD16 Measures approx.: 16" wide x 14" deep x 3.5" tall Dual 2" FIPT Inlets Recommended Flow Rate: 1000 to 4000 GPH

23" Waterfall Diffuser Model: UWD23 Measures approx.: 23" wide x 14" deep x 3.5" tall Dual 2" FIPT Inlets Recommended Flow Rate: 1500 to 6000 GPH

How to Install 
Position the diffuser at the top of the reservoir, flush with the desired finished grade. Attach the liner to the back flange, connect the pump supply line to the inlet fitting, and backfill around the unit. Adjust pump flow to achieve the desired waterfall effect across the lip. Ideal for compact pondless waterfall installations,pondless features, and any water feature where a clean, low-profile waterfall header is required.

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Dual Inlets allow for using multiple weirs to make larger falls if required.