Cooling
®
43
Straight Brass Plug Baffles
Brass Plug Baffles, available in both straight and spiral styles, are constructed entirely of high-quality brass with blades brazed to the plugs for long, dependable service. They provide a high-pressure seal through a deliberate difference of taper between the plug and the tapped hole. The function of the baffle is to split the drilled waterline into two equal channels. As the heating or cooling medium enters, the baffle diverts the flow to travel up to and over the end of the baffle and down the other side. Clearance must be provided between the end of the baffle and the end of the drilled channel to provide adequate flow. See Dimension “C” for approximate
STRAIGHT BAFFLES
THREAD SIZE
THREAD LENGTHS
NOMINAL PLUG SIZE 1/16 & 1/8 1/4 & 3/8 1/2 & 3/4
THREAD+.000 LENGTH -.015
.250 .406 .531 .656
1 "
HEX SIZE
NOTE: A drilled hole (finish dH13) is adequate. Don’t ream the hole.
Straight Brass Plug Baffles (Inch) – BB
BAFFLE WIDTH
NOMINAL LENGTH OVERALL
ITEM NUMBER BB-05-4 BB-05-8 BB-10-4 BB-10-8 BB-20-5 BB-20-10 BB-40-6 BB-40-12 BB-60-8 BB-60-16 BB-100-12 BB-100-20 BB-140-16
NOMINAL PLUG SIZE HEX SIZES
BAFFLE THICKNESS
-.005 -.015
DRILL SIZE
C
1/16 1/16
5/32 5/32 3/16 3/16
4 " 8 " 4 " 8 " 5 "
.050 .050 1/16 1/16 3/32 3/32 3/32 3/32 3/32 3/32
1/4 1/4
1/4 1/4
.10 .10 .12 .12 .17 .17 .21 .21 .26 .26 .35 .35 .42
Typical Applications
1/8 1/8 1/4 1/4 3/8 3/8 1/2 1/2 3/4 3/4
5/16 5/16 7/16 7/16 9/16 9/16
5/16 5/16 7/16 7/16 9/16 9/16
1/4 1/4
10 "
5/16 5/16
6 "
12 "
3/8 3/8
8 "
11/16 11/16 15/16 15/16
11/16 11/16 15/16 15/16
16 " 12 " 20 " 16 "
9/16 9/16
1/8 1/8 1/8
1
5/8
11/8
11/8
Straight Brass Plug Baffles (Metric) – BB
ITEM NUMBER R
SW
B
L
L1
T
D
BB-100-18 1/8" BSP 5 BB-200-18 1/8" BSP 5 BB-125-14 1/4" BSP 6 BB-250-14 1/4" BSP 6 BB-150-38 3/8" BSP 8 BB-300-38 3/8" BSP 8 BB-200-12 1/2" BSP 10 BB-400-12 1/2" BSP 10 BB-300-34 3/4" BSP 12 BB-500-34 3/4" BSP 12
8.2 8.2
100 200 125 250 150 300 200 400 300 500
8 8
2.0 2.0 2.5 2.5 2.5 2.5 2.5 2.5 3.0 3.0
8.5 8.5
11.2 11.2 14.7 14.7 18.2 18.2 23.2 23.2
10 10 10 10 10 10 12 12
11.5 11.5 15.0 15.0 18.5 18.5 23.5 23.5
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