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309550U 37
Mix Chamber Kits
Round Pattern Guns
Flat Pattern Guns
† Available only in flat mix chamber kits or in 246360 multi-pack kit.
Mix Chamber Part No. Reference Guide
Sample part no. AR4242:
Mix Chamber Kit
(includes drill bits)
Nozzle
Orifice
Size
Nozzle Drill
Bit Size,
in. (mm)
Impingement
Port Size
Impingement
Port Drill Bit
Size, in. (mm)
Counterbore
Size
Counterbore
Drill Bit Size,
in. (mm)
AR2020 0.042 #58 (1.00) 0.020 #76 (0.50) 0.060 #53 (1.50)
AR2929 0.052 #55 (1.30) 0.029 #69 (0.70) 0.060 #53 (1.50)
AR3737 0.052 #55 (1.30) 0.037 #63 (0.94) N/A N/A
AR4242 0.060 #53 (1.50) 0.042 #58 (1.00) N/A N/A
AR5252 0.070 #50 (1.75) 0.052 #55 (1.30) N/A N/A
AR6060 0.086 #44 (2.15) 0.060 #53 (1.50) N/A N/A
AR7070 0.094 3/32 (2.35) 0.070 #50 (1.75) N/A N/A
AR8686 0.116 #32 (2.90) 0.086 #44 (2.15) N/A N/A
Mix Chamber
Kit (includes
drill bits and
o-ring)
Ref. No.
40†,
O-ring
Nozzle
Orifice
Size
Nozzle Drill
Bit Size,
in. (mm)
Impingement
Port Size
Impingement
Port Drill Bit
Size, in. (mm)
Counterbore
Size
Counterbore
Drill Bit Size,
in. (mm)
AF2020 246360 0.094 3/32 (2.35) 0.020 #76 (0.50) 0.060 #53 (1.50)
AF2929 246360 0.094 3/32 (2.35) 0.029 #69 (0.70) 0.060 #53 (1.50)
AF4242 246360 0.094 3/32 (2.35) 0.042 #58 (1.00) N/A N/A
AF5252 246360 0.094 3/32 (2.35) 0.052 #55 (1.30) N/A N/A
AR 42 42
AR=Air purge
round pattern
AF=Air purge
flat pattern
A orifice size
(.042 in.)
B orifice size
(.042 in.)