The fluid jet and needle MUST always match exactly. However, the spraycap/air nozzle may be one size up or down from the norm. The sizes No.3 and 4 setups are both ideal for all fine finishing. 3 different setups are available as accessories. Generally speaking, the quality of atomization and finish suffers as you go to the largest size setups (No.5 and 6). Please note that the chart offers you a starting point only as to the setup size to be used. The best way to decide is by experimentation. If you are using the No. 3 setup and wish to spray faster, wetter then switch to No. 4.
IF YOU DO NOT INTEND ON SPRAYING WALLS & CEILINGS THEN THE ONLY TWO SETUPS YOU WOULD EVER NEED WOULD BE THE #3 AND THE #4.
Size # 3 - 1.0 mm (.039") FINE TO MEDIUM OUTPUT
Most ‘fine-finishing’. WATER-BASED LACQUERS, NITROCELLULOSE LACQUERS, SEALERS, CELLULOSE, ACRYLICS, SYNTHETICS, POLYURETHANE, STAINS, VARNISH, GLITTER PAINTS, PRIMERS. Please note thicker material must be thinned as much as 30%. Thinning beyond manufacturers specs should not affect finish quality if done properly. No latex and house enamels with this tip.
Size # 4 - 1.4mm (.055") MEDIUM OUTPUT
Similar to No. 3 but more coverage. Especially suitable for AUTOMOTIVE ENAMELS, NITROCELLULOSE LACQUER, CATALYZED LACQUERS and LATEX where finer finish is required such as louver doors, trim, cabinets (see section above about Latex). Also good for VARNISHES and OIL-BASED PAINTS. Latex paint must be thinned 20%-30%. We recommend floetro, extender or Penetrol.
Size # 5 - 1.8mm (.070") HIGH OUTPUT
Larger surfaces, thick layers, spotted effects. SEALERS, VARNISH, POLYURETHANE, OIL BASE PAINTS, ENAMELS, EPOXY, PLASTIC, ADHESIVES, FLOOR PAVING PAINTS, LATEX (on walls) SPLATTER PAINTS, MULTI-FLECK ETC.
Size # 6 - 2.2mm (.086") EXTRA HIGH OUTPUT
Very heavy flows, fast coverage. STONE FINISH PAINTS, TEXTURE COATING, INDUSTRIAL PRIMERS, LATEX (on walls, ceilings) ETC.