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Media Retention Johnson Screen / Wedge Wire Nozzles
One of our leading product line is our media retention nozzles which are manufactured in variety of designs offering compatibility, dependability and performance resulting in a long service life.
100% FREE BROKEN NOZZLE PROBLEM & PLUGGING PROBLEM
High Pressure Resistance
Very Low Pressure Lost
Better Sand Control
Reduce Pumping Head
Downflow reactor can place extemely high loading on the media retention screens at the bottom of the vessel. In some cases, this can require a steel plate to carry the load. Obviously, some provision must be made for the process flow to pass through this plate.
This can most easily and effectively be done by installing a number of screen nozzles uninformly across the plate. Johnson screen nozzles are an ideal choice based on their combination of high strength, high open area and non-plugging slot design.
Standard nozzles are 50 mm diameter and can be attached to the plate either with threaded end fittings or with “L” bolts. Slot openings are typaclly 0.20 mm wide and are of the unique plug-resistant Johnson Vee-Wire design, allowing particles to make only two-point contact with the edges of the wire.
In other designs such as wire mesh, particles can readily become entrapped in the mesh causing plugging and creating a continuing maintenance problem. Johnson screen nozzles are most commonly made with 304L or 316L stainless steel, but a special spherical nozzle of ABS or Kynar plastic is also available. Other custom nozzles can be designed to suit special process and installation requirements.