JOHNSON TYPE 1 ″ STRAIGHT NOZZLES, IN 316 STAINLESS STEEL
Jonshon 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.
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 microgroove 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 fixing of these nozzles is by means of the two nuts that must remain between the perforated plate (without thread) with the false bottom.
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 30 mesh to be directly retained. This means that gravel beds are not required as support.
Jonshon type nozzles characteristics:
Made of polished 316 Stainless Steel
Micro-groove opening on the outside: 0.18 mm
Acid resistant rubber grip.
Hexagon nuts for fixing.
Johnson Micro Grooved Element Length: 13.5cm
Total length: 6 cm
Tube diameter: 1 ″
Suggested Maximum Service Flow: 4 - 6 GPM
Suggested Maximum Backwash Flow: 18 GPM
Pressure collapse: 300 PSI (2070 kPa)
Burst Pressure: 200 PSI (1380 kPa)