Industrial Vacuum Tankmount Systems
Operating & Maintenance Manual
Powerex • 150 Production Drive • Harrison, OH 45030 • USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN599500AV • 20 October 2020
Page 7 of 20
6. A drip leg and drain valve must be installed for
any exhaust piping that collects moisture after the
pump outlet connections. The Powerex drip leg
is not suitable for draining the complete exhaust
system.
7. The exhaust piping should be kept short and have
the least restriction possible. The flex connector
supplied by Powerex may be repositioned
(changed from vertical to horizontal and the elbow
turned or removed) if desired to achieve a more
effective installation to match the field installed
exhaust piping. Repositioning is desirable if the
final system plumbing design can be shorter by
doing so.
8. Never use any piping smaller than the pump
connection. To determine the minimum required
pipe size for a vacuum system exhaust, calculate
the equivalent straight length of the run. Never
use a pipe size smaller than the flex connector
supplied by Powerex or smaller than the size
shown in the 100 foot column on the chart for the
CFM of the pump. The equivalent straight length
is the length of all the pipe needed from the flex
connector to the final outlet plus a factor for each
elbow, cross or tee. Pipe must be smooth ID. If
rough pipe is used, increase by one size.
The IBVS and IBVD systems do not
have a service disconnect or branch
circuit protection. These must be provided in accordance
with NEC and any local codes at the time of installation.
9. If a grating or grille is used at the end of the
exhaust pipe, make sure its open area is at least
equal to the area of the exhaust pipe.
Pipe Size Requirements
System CFM
Minimum
Pipe Size for
100 feet
Minimum
Pipe Size for
300 feet
Minimum
Pipe Size for
600 feet
5
1.0
1.25
1.5
7
1.0
1.25
1.5
11
1.25
1.5
1.5
21
1.25
1.5
1.5
26
1.25
1.5
2.0
32
1.25
1.5
2.0
38
1.5
2.0
2.5
52
1.5
2.0
2.5
58
1.5
2.5
2.5
63
2.0
2.5
2.5
65
2.0
2.5
3.0
87
2.0
2.5
3.0
104
2.0
3.0
3.5
111
2.5
3.0
3.5
154
2.5
3.0
3.5
156
2.5
3.5
4.0
168
2.5
3.5
4.0
195
3.0
3.5
4.0
258
3.0
3.5
4.0
260
3.5
4
5.0
387
3.5
4
5.0
516
4
5
6.0
If the system extends beyond 600 equivalent straight feet,
use one size larger pipe.
Pipe Size
Equivalent length
for 90° elbow, cross,
or tee
Equivalent length
for 45° elbow
3.0 feet
1.5 feet
1.5
3.75 feet
1.8 feet
2.0
5.0 feet
2.5 feet
2.5
6.25 feet
3.1 feet
3.0
7.5 feet
3.8 feet
3.5
8.78 feet
4.4 feet
4.0
10.0 feet
5.0 feet
5.0
12.5 feet
6.25 feet
If the IBVS or IBVD system is going
to be operated with cut in vacuum
levels less than 19 inHg (closer to atmospheric condition)
Содержание IBVD0153 Series
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