Determining Bead Application Pressure
332230T
27
Determining Bead Application Pressure
The table below lists bead delivery rates for 4 inch (10
cm) lines with standard size highway beads.
• Wider lines use multiples of 4 in. to determine bead
delivery.
• Larger beads reduce flow rates, so a larger nozzle
and higher pressure may be required.
• Always verify flow rates with a stopwatch and a
scale for weight.
To determine application pressure, follow steps 1 - 4
below:
1. Determine speed the machine will travel when
applying line.
2. Identify what the required bead delivery rate is in
job specifications.
3. Under bead gun nozzle size, find nearest value
compared to Step 2.
4. Match pressure needed to Step 3. Set air regulator
to this pressure.
† EXAMPLE:
a. At 4 mph and 6 lb/gal with 0.234 nozzle set
tank pressure to 15 psi.
b. At 4 mph and 6 lb/gal with 0.281 nozzle set
tank pressure to 10 psi.
c. For 8 in. width, multiply weight/min value (7.1) x
2 and for 12 in. width x 3.
Step 1
Step 2
Step 3
Step 4
Speed
Bead Delivery Requirement (4 in.)
Nozzle Size
Pressure Needed
6 lb/gal
8 lb/gal
0.234
0.281
mph
lb/min
lb/min
lb/min
lb/min
psi
2
3.6
4.7
4
5
5
3
5.3
7.1
6
† 7
10
4
† 7.1
9.5
† 7
9
15
5
8.9
11.9
9
11
20
6
10.7
14.2
11
14
25
7
12.4
16.6
13
16
30
8
14.2
19
16
19
35
Step 1
Step 2
Step 3
Step 4
Speed
Bead Delivery Requirement (10 cm)
Nozzle Size
Pressure Needed
720 gram/liter
960 gram/liter
0.234
0.281
mph
lb/min
lb/min
lb/min
lb/min
psi
2
3.6
4.7
4
5
5
3
5.3
7.1
6
† 7
10
4
† 7.1
9.5
† 7
9
15
5
8.9
11.9
9
11
20
6
10.7
14.2
11
14
25
7
12.4
16.6
13
16
30
8
14.2
19
16
19
35
Содержание LineLazer 200DC
Страница 31: ...Notes 332230T 31 Notes ...
Страница 32: ...Parts Model 25R268 32 332230T Parts Model 25R268 ...
Страница 34: ...Parts Model 25R270 34 332230T Parts Model 25R270 ...
