Diffuser Hollow Cylinder and fuchsia in colour. Ancilliary parts on each end. The item is used to Filter and Diffuse air, dissolve the air in water and achieve the effect of purifying water. The 330mm Diffuser comprises a ceramic tube measuring 330mm, which is connected on both ends using nylon fittings fastened with a threaded bar also measuring 330mm. The ceramic tube is constructed from 30 Mesh Selected silica sand, pigments, and adhesive. The material chosen for the inserts in this case is Nylon 6 Raw Materials are dyed and dried and poured into a mould for extrusion moulding. Put into the Kiln for low-temperature sintering. Afterwards, final parts added in assembly operation. The Mohs hardness value is 7

GIR 1 & 6 SECTION AND CHAPTER NOTES TO SECTION XIII CHAPTER 69 Note 1 b Notes. Chapter 84 1.- This Chapter does not cover: (b) Machinery or appliances (for example, pumps) of ceramic material and ceramic parts of machinery or appliances of any material (Chapter 69); TECT OT CODES 6909, 6909190090