Underwater Porthole for Metal Walls - Round Polished Stainless Steel - AISI 316 Watertightness
Waterproof underwater porthole for use on prefabricated swimming pools with a metal wall thickness of 2/4mm.
Equipped with external ring in stainless steel 316 to compensate for the small thickness.
Equipped with N°4 silicone rubbers.
AVAILABLE SIZES ØInternal/ ØExternal (mm):
Ø180/300, Ø280/400, Ø380/500.
TECHNICAL CHARACTERISTICS Underwater Porthole for Metal Walls:
- Made of polished AISI 316 steel;
- The walls must be coplanar and smooth;
- Tested in the tank at -3mt. = 0.3 ATM.
- Operating temperature: -40°C +60°C;
- For light projector use: LED only max. 50°C;
- Gray non-deformable silicone gaskets;
- Resistant to additives present in water;
- All materials are certified;
- Tightening torque: 250 Newton cm²;
- Plexiglass light mm20÷30.
Colombo Giovanni has been manufacturing Italian portholes by hand for 40 years
At its factory in Brescia (in Fenili Belasi), the Colombo company designs and builds its products, constantly improving their quality. Right from the design of these portholes, the goal is to achieve maximum customer satisfaction by acknowledging their precise needs. This is why we can guarantee the durability and functionality of these magnificent portholes.
NB = Do not leave the door without water for more than 6 days.
