Johnson type nozzle in stainless steel 3/4″ and 1″.


Nozzle, manifold, diffuser or distributor for water filter

Lower distributor with 3/4″ and 1″ NPT thread, 316 stainless steel, 4 GPM

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316 stainless steel Johnson type nozzle for water filters.

Lower Johnson type nozzle with 3/4″ and 1″ NPT thread, 316 stainless steel, for 4 GPM

Micro-slotted 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.

Due to their application in the food and beverage industry, they are manufactured in type 316 stainless steel. This material has the advantage, compared to plastic nozzles, of being temperature resistant, which allows the sanitization of the equipment by means of steam.

In addition to the retention function, the micro-slotted nozzles provide good drainage and adequate flow distribution, both in equipment working under pressure and in those working by gravity.

The micro-slit through which the fluid flows has a “V” shaped cut, with the most closed part towards the outside of the nozzle. This design prevents clogging.

The microslot is continuous and has a total area for flow of approximately twice the cross-sectional area of the connection nipple which has a nominal diameter of ¾” NPT. This means that the microslot does not constitute a restriction to flow and, therefore, causes minimal pressure drop.

The opening of the collector is 0.18 mm in the most closed part, which is the one in contact with the granular medium, allowing it to directly retain any granules larger than 40 mesh. This means that no gravel beds are required for support.

They are manufactured under rigorous quality standards and the material of construction is 316 food grade steel.

Johnson type stainless steel nozzle
Microgrooves help to achieve good drainage and proper flow distribution.
NPT thread.
The standard NPT thread is compatible with 3/4″ connections.
316 stainless steel.
Due to their application in the food and beverage industry, they are manufactured in type 316L stainless steel.


  • Brand: Carbotecnia.
  • Manufactured in 304 or 316 polished stainless steel.
  • Connection: Nipple 3/4″ and 1″ NPT.
  • Opening of the micro groove of the external part: 0.18 mm.
  • Diameter: 2″ (50 mm)
  • Slotted area height: 1 1/16″ (40 mm)
  • Overall height: 3.5″ (90 mm)
  • Suggested maximum service flow: 4 GPM (15 LPM)
  • Suggested maximum backwash flow: 6.5 GPM (25 LPM)
  • Pressure collapse: 300 PSI (2070 kPa)
  • Burst pressure: 200 PSI (1380 kPa)
  • Placement distance between each nozzle:
  • Optimum: 15 cm.
  • Maximum: 30 cm.

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Learn more about nozzles here:

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