Ninja
Ninja is a high-performance shower waste for shower trays, featuring an advanced dry trap system with an integrated anti-odour membrane.
This innovative membrane opens during water flow and automatically seals once the flow stops.
This technology effectively prevents the backflow of unpleasant odours and the ingress of insects, making Ninja particularly suitable for installations in infrequently used bathrooms.
Ninja is distinguished by its ultra-compact design, requiring only 50 mm of installation space beneath the shower tray. By comparison, one of our most widely used shower wastes, Aloha, requires 70 mm.
![SI-5781.0366 [26.03.14]-B](https://www.omptea.eu/wp-content/uploads/2026/03/SI-5781.0366-26.03.14-B.jpg)
The product is suitable for acrylic shower trays, thanks to a specially designed lip seal that can be easily trimmed flat, ensuring full compatibility also with ceramic shower trays.
Manufactured from high-quality polypropylene, Ninja is equipped with a Ø118 mm chrome-plated ABS cover grid and a premium AISI 316 stainless steel flange, ensuring durability and corrosion resistance.
The lateral outlet features a 1″½ nut for DN40 pipe connections and guarantees a flow rate of 25 l/min, fully compliant with EN 274 standards.

The dry trap unit with anti-odour membrane complete with AISI 316 flange, is fully removable, allowing direct access to the connected pipework for easy inspection and maintenance. It also includes an integrated hair strainer.
The illustration below shows the waste in two operating conditions: with the membrane open to allow water drainage, and closed to prevent odour backflow and insect entry.
![5781.0766 [25.12.12]-A](https://www.omptea.eu/wp-content/uploads/2026/03/5781.0766-25.12.12-A-scaled.jpg)
![5781.0766 [25.12.12]-B](https://www.omptea.eu/wp-content/uploads/2026/03/5781.0766-25.12.12-B-scaled.jpg)
PRODUCT SPECIFICATIONS
- Ø118 mm chrome-plated ABS cover grid removable for maintenance.
- Adjustment is achieved with three screws, featuring co-moulded threaded inserts integrated into the brass waste
- Ø108 mm AISI 316 stainless steel flange, ensuring chemical and corrosion resistance
- Dual-lip, trim-to-fit gasket for maximum installation flexibility, a single gasket suitable for both acrylic and ceramic shower trays
- Dry trap with removable odour-blocking membrane for direct access to connected pipes, complete with hair-catching filter
- Black PP waste body, engineered to minimise installation height to just 50 mm
- Lateral outlet with 1″½ nut (DN40)
![SI-5781.0366 [26.03.14]-A](https://www.omptea.eu/wp-content/uploads/2026/03/SI-5781.0366-26.03.14-A-scaled-e1774354561848.jpg)
![5781.0366 [26.03.22] Ov](https://www.omptea.eu/wp-content/uploads/2026/03/5781.0366-26.03.22-Ov-scaled.jpg)
Art. 5781.036.6
View the technical sheet
