Dimensions | Flow Switches
ASSEMBLY PART NUMBERS (includes pitot tube and different pressure switch)
REPLACEMENT PARTS
8" Pitot Tube: R300-1008 12" Pitot Tube: R300-1003 18" Pitot Tube: R300-1004 Mounting Gland: R300-1004 Pressure Switch: 8757-A4-1.2i
Overall
Insertion
Part Number Pipe Size
Length "L" Length "A"
8590B-A-1.2i 8590B-B-1.2i 8590B-B-1.2i 8590B-B-1.2i 8590B-B-1.2i 8590B-B-1.2i 8590B-C-1.2i 8590B-C-1.2i 8590B-C-1.2i 8590B-C-1.2i 8590B-C-1.2i
6 8
8"
14.73" 18.73" 18.73" 18.73" 18.73" 18.73" 24.29" 24.29" 24.29" 24.29" 24.29"
12" 12" 12" 12" 12" 18" 18" 18" 18" 18"
10 12 14 16 18
20 24 26 28
DIMENSIONS
A
6.04
Pressure Connection (-)
Differential Pressure Switch (8757-A4-1.2i)
L
¼" Pipe Plug
Mounting Gland ( ½ " NPT or flat duct mountable w/flat washer)
4.82
Pressure Connection (+)
9.19
7.64
¼" Pipe Plug
Pitot Tube
AIR FLOW
AIR FLOW
4.45
Bulletin 8590 Page 6
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