Assembly Nozzles Screen Johnson type

Assembled nozzle for false bottom filter

Lower mouth with a 2 ″ mouth, in 316 stainless steel, for high flows to be placed on a plate or false bottom filters.

Product images are illustrative and may vary from the physical product.

2 ″ nozzle for false bottom filters

Brand: Carbotecnia

Made of polished 316L Stainless Steel

Connection: 2 ″ bottom opening

Micro-groove opening on the outside: 0.18 mm

Bottom rubber gasket.

It includes a foot valve or pichancha to avoid the return of the water. (can be removed if not needed)


Diameter: 82mm

Grooved part height: 50mm

Bottom opening: 50mm

Total height: 150 mm


Micro-grooved nozzles are used for the retention of granular media in water treatment equipment. These media can be of any type, such as: activated carbon, silica sand, ion exchange resins, green sand, MTM, Birm, pyrolusite, among others.

In addition to the retention function, the micro-grooved nozzles perform a good drainage, as well as an adequate distribution of the flow, both in equipment that works under pressure, as in those that do it by gravity.

The Johnson type element through which the fluid circulates has a “V” shaped cut, with the most closed part towards the outside of the nozzle. This design prevents plugging.

The microgroove is continuous and has a total flow area approximately twice the section area of the connecting nipple. This means that the microgroove is not a restriction to flow and therefore causes minimal pressure drop.

The 0.18 mm opening in the most closed part, which is the one in contact with the granular medium, allows any granules larger than 40 mesh to be directly retained. This means that no gravel beds are required as support.

Data sheet

Assembled nozzle for false bottom

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