68Pb Air Nozzle
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Knowledge Base
Frequently Asked Questions
What is the difference between the Binks 66SS, 67SS and 68SS fluid nozzles?
Orifice size, which sets how heavy a material the gun can move:
| Fluid nozzle | Orifice | Use for | Needle |
|---|---|---|---|
| 66SS (45-6601) | .070″ / 1.8 mm | Thin to medium: lacquers, synthetic enamels, primers, epoxies, urethanes | 565 |
| 67SS (45-6701) | .086″ / 2.2 mm | Heavy, cream-like: house paint, latex, block sealers, gel coat | 567 |
| 68SS (45-6801) | .110″ / 2.8 mm | Heavy to very heavy: block filler, mill white, vinyls, textured coatings | 568 |
Table 1 — 2100 fluid nozzles by orifice. All three are stainless steel.
The 66SS is the general-purpose choice and ships on both stocked 2100 outfits. Step up to 67SS above about 28 seconds on a #4 Ford cup, and to 68SS with the 68PB air nozzle for the heaviest coatings.
My spray pattern is heavy on one side. Is it the air cap or the fluid tip?
Spray a test pattern, rotate the air cap one-half turn, and spray again.
- Defect flips to the other side: the obstruction is on the air cap. Soak it in solvent and clear the horn holes with a toothpick or broom straw. Never use wire; it enlarges the hole and the cap is scrap.
- Defect stays put: the problem is on the fluid tip. Look for dried paint just inside the opening (wash with solvent) or a fine burr on the edge (remove with #600 wet-or-dry paper).
A loose air cap gives the same lopsided pattern, so tighten the retaining ring first. If cleaning does not fix it, replace the cap: stocked caps include the Binks 66SD and 66SK for the 2100 and the 64HD, 62HD and 704 for JGA and MBC guns.
What do the S, P, E and I letters on Binks air nozzles mean?
They tell you how the nozzle feeds and mixes:
- E: external mix. Air and fluid meet outside the nozzle; the pattern adjusts from round to a full fan. Most Binks nozzles are external mix.
- S: siphon type. Will draw material up from a cup; for refinishing and touch-up where you do not need big volume. The 66SD and 66SK are S caps.
- P: pressure type. Needs a pressure cup, tank or pump pushing material to the nozzle; for production work and heavy fluids. The 68PB, 62HD, 64HD and 704 are P caps.
- I: internal mix. Air and fluid mix inside the nozzle, so the pattern shape is fixed. Uses less air and makes less fog; for heavy maintenance coatings where a fine finish is not needed. Pressure feed only.
Mismatch symptom: a pressure or internal-mix cap on a siphon cup simply will not spray. Match the cap to the feed before you chase anything else.