Atomizing air "O" ring
Gas tube/air disc assembly Atomizing air tube & nozzle assembly
"U" cup w/ "O" ring Atomizing air safety ring
North American 6421 Quick Take-Apart Dual-Fuel Burner
Mounting
Parts List 6421-2
Oil tube
Backplate
Sensitrol™ oil valve *
Body
Oil connection assembly
¼ " pipe plug
Burner tile
Oil nozzle Refractory face discs (2)
Spring
Air disc gasket
Tile retaining rods (4)
Gas connection "O" ring
Air tubes (8)
Gas adjustment cartridge assembly
Oil connection "O" ring
Burner designation
Part name
6421-4
6421-5
6421-6
6421-7-A
6421-7-B
6421-8-A
Air Disc Gasket
3-5854-1 3-3640-2 R520-4280 3-16069-1 3-4587-4
3-5854-1 3-3639-2 R520-4280 3-16069-1 3-4587-4
3-5854-1 3-3554-2 R520-4280 3-16069-1 3-4587-4
3-8265-1 3-3273-3 R520-4315 3-16017-1
3-8265-1 3-3273-4 R520-4315 3-16017-1
3-8265-1 4-3684-2 R520-4315 3-16017-1
Air Tube (8 req’d.) Inconel
Atom. Air "O" Ring
Atom. Air Conn. "O" Ring Holder
Atom. Air Tube & Nozzle Assembly Backplate Backplate Fastener
3-6121-1
3-6121-1
3-6121-1
3-4765-3
3-4765-3
3-4765-3
3-4826-2
3-4826-2
3-4826-2
See page 2 See page 2
Backplate Fastener Adapter
Body
3-4764-5 3-6673-2 3-7611-1 3-16049-1 R520-4350 3-5856-1
3-4764-6 3-6673-2 3-7611-2 3-16050-1 R520-4350 3-5856-1
3-4764-6 3-6673-2 3-7611-2
3-4822-1 3-6673-3 3-7611-3 3-16051-1 R520-4375
3-4822-1 3-6673-3 3-7611-3 3-16051-1 R520-4375
3-4822-1 3-6673-3 3-7611-3 3-16051-1 R520-4375
Burner Tile
Gas Adjustment
Cartridge Assembly Gas Conn. "O" Ring Holder
3-16050-1 R520-4350 3-5856-2
Gas Conn. "O" Ring Gas Tube/Air Disc
3-12511-1
3-12511-1
3-6125-1
Assembly Knob (4 req'd) Main Air Flange
See page 2 See page 2 See page 2
Main Air Flange Gasket
Mounting
3-5850-1
3-5850-1
3-5850-1
3-4638-4
3-4638-4
3-4638-4
Observation Port Oil Conn. Assembly Oil Conn. "O" Ring
See page 2
3-4584-1 R520-4136 3-2541-1 3-4589-3 R590-7850 R590-7823 R590-7805 4-4038-3
3-4584-1 R520-4136 3-2541-1 3-4589-3 R590-7850 R590-7823 R590-7805 4-4038-3
3-4584-1 R520-4136
3-4584-1 R520-4136
3-4584-1 R520-4136
3-4584-1 R520-4136
Oil Nozzle Oil Tube
3-2541-1 3-4589-3 R590-7850 R590-7823 R590-7805 4-4038-3
3-2541-1 3-6119-1
3-2541-1 3-6119-1
3-2541-1 3-6119-1
Pipe Plug ¾ " (2 req'd)
R590-7850 R590-7823 R590-7805 3-6123-1†
R590-7850 R590-7823 R590-7805 3-6123-1†
R590-7850 R590-7823 R590-7805 3-6123-1†
Pipe Plug ¼ "
Pipe Plug 1⁄8 " (2 req'd) Refractory Face Disc (2 req'd) Sensitrol Oil Valve *
1813-02-A 3-5794-1
1813-02-A 3-5794-1
1813-02-B 3-5794-1
1813-02-C 3-5634-1
1813-02-C 3-5634-1
1813-02-C
Spring
3-6118-1
Swing Bolt (4 req'd) Tile Retaining Rods "U" Cup w/"O" Ring
See page 2
3-1115-2
3-1115-2
3-1115-2
3-1115-2
3-1115-2
3-1115-2
R541-4217
R541-4217
R541-4217
R541-4231
R541-4231
R541-4231
* Sensitrol Oil Valve is not included as part of the burner assembly and must be ordered separately. † Only 1 required.
(Parts list continued on page 2)
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