The Bobcat B509 takes the fine 0.009” orifice of the B409 and opens the spray angle to 50°, producing a 10” pattern — 2” wider per pass than the B409 at the same ~9 oz/min fluid delivery. It’s the configuration for operations running very thin coatings on wider substrates where the 8” B409 fan covers too little area per pass to keep pace with production requirements.

The 0.009” orifice keeps fluid delivery precise — thin sealers, dye stains, very thin waterborne topcoats, and specialty thin coatings that would run or blotch with a larger orifice. The 50° angle extends coverage efficiency to flat panels, wide cabinet doors, and larger wood or metal surfaces where every additional inch of fan width translates directly to fewer passes per part.

The decision between B509 and B409 is purely geometric — same orifice, same fluid delivery, same pressure requirements, same 6 CFM air draw. Choose B509 when your substrate is wide enough to benefit from 10” coverage; stay with B409 for narrower components where the 8” fan already matches the target well.

Fluid Tip

36-509

0.009” orifice · 50° angle · ~10” pattern

Same 0.009” orifice as the B409 at a wider 50° angle — ~9 oz/min at 1000 PSI with 10” coverage for thin coatings on flat panels and wider substrates. Field-replaceable tip.

Air Cap

26-101

AAA HVLP air cap · ≤18 PSI at handle

Same air cap as all Bobcat configurations. The 50° tip geometry controls fan width; the air cap refines atomization independently. No adjustment needed when switching angles on the same material.

Gun Type

AAA

Air Assist Airless · 1500 PSI max

Requires AAA pump (e.g., Peak 14:1). At 0.009”, thin materials atomize well at lower fluid pressure — start at 350 PSI and increase until pattern is consistent.

Repair Kits

What is the difference between B509 and B409?

Identical 0.009” orifice and ~9 oz/min fluid delivery at 1000 PSI. The only difference is fan width: B409 uses 40° for an 8” pattern; B509 uses 50° for a 10” pattern. Choose B509 when your substrate is wide enough that the extra 2” of fan width improves throughput. No pressure adjustment is needed when switching between them on the same material.

Does changing from 40° to 50° affect fluid delivery?

No — fluid delivery is determined entirely by orifice size and fluid pressure. Both B409 and B509 deliver the same ~9 oz/min at 1000 PSI because both use the 0.009” orifice. The 50° angle only changes the fan geometry, not the amount of material the tip passes per minute.

Can I use B509 on the same job as B409 without resetting the gun?

Yes — because both tips use the same orifice and the same air cap, your fluid pressure and air pressure settings carry over directly. Swap tips, no adjustment needed for the same material. The only change is fan width at the substrate.

What if I need 0.009” with even more fan width?

The B509 at 50° is the only 0.009” configuration in the Bobcat lineup beyond the B409. If you need a wider pattern for the same material, the next step is moving up to a slightly larger orifice with a wider angle — such as the B511 at 0.011” and 10”. Call or text 586-210-0555 to confirm.

What repair kit does the Bobcat use?

10-137 covers routine maintenance — all o-rings and the seat. 10-138 is the complete kit adding the air valve assembly and needle seal cartridge. CET stocks both for same-day shipment. Most in-stock orders ship same day — stocked at C.A. Technologies’ Colorado facility.

Where can I find the Bobcat parts manual?

The full parts manual with exploded diagram, tip flow chart, and all replacement part numbers is available via the download button below. CET includes documentation with every order.