B60 Super Blower™
The B60 Super Blower™ was designed for use in long
underground single bore conduit from 2
1
⁄
2
" through 6". The
B3000 Power Unit must remain above ground for safety
reasons, and the 2
1
⁄
2
" diameter x 25' long hose and seal-off
are used in the manhole. The portable triple motor power unit
provides a high volume of air to blow a line in large bore
conduit whether above ground or below ground.
Blo-Vac™ Systems
GB/JetLine
®
Blo-Vac™ Systems: BV208DA Super-Ultra
Blo-Vac™ provides blowing or vacuuming capabilities
for conduit fishing of
1
⁄
2
" through 6". These systems provide a
higher output pressure for more difficult runs. The water lift
capabilities of the Blo-Vac™ is the same for blowing or
vacuuming. See 5.0 Technical Specifications, GB/JetLine
®
Blo-Vac
™
Table.
Each Blo-Vac™ system is cart mounted for easy transporting
around the job site. Each Blo-Vac™ unit has three
compartments which are easily separated. The top section is
the power unit, the center section is the recovery
compartment, and the bottom section is storage for
accessories. See Figure 4. The power unit and the recovery
compartment may be unlatched from the tool storage
compartment and used as a portable blower vacuum system.
All Blo-Vac™ systems are equipped with a 1
1
⁄
2
" diameter x 8'
long hose and seal-offs to fit
1
⁄
2
" through 6" conduit.
The BV208DA Super Ultra Blo-Vac™ has a powerful three-
stage motor fan section. The recovery capacity is 4
1
⁄
2
gallons
expandable to 9 gallons by using the tool storage
compartment above the recovery compartment after
removing the false bottom. Housings are made of high
impact polypropylene.
7.0 USE AND OPERATION
The primary purpose of the GB/JetLine
®
Conduit Fishing
System is to place a pull line in the conduit by the quickest
and easiest means available. The GB/JetLine
®
Blower and
Blo-Vac™ systems are low pressure, high volume machines
that are easy and convenient to use.
7.1 Blowing Line in the Conduit
The GB/JetLine
®
Blower and Blo-Vac™ systems are
designed to blow line in a “sealed” conduit such as EMT
conduit with compression type couplings, rigid conduit with
threaded joints, or PVC conduit with adhesive bonded joints.
These types of conduit require very little effort to install a pull
line with the Blower or Blo-Vac™ system.
There are some conduit runs that will be difficult or impossible
to blow a line in, such as:
• Conduit containing hard packed sand, silt, debris
or concrete.
• Conduit containing water with a head greater than the
maximum water lift of the Blower or Blo-Vac™ system.
• Conduit with leaking or separated joints.
• Conduit with two sizes of duct connected by a reducer.
• Conduit with unsealed set screw couplings.
• Small diameter conduit of several hundred feet with
multiple bends.
Let Gravity Help
When blowing line in conduit of tall buildings or underground
duct, start at the highest elevation of the conduit entrance. In
underground duct; water may have accumulated in low points
of the run, and the blower may not be able to force it out.
Start at the highest point.
7.2 Preparation
It is helpful to know the purpose for which the line is to be
used once it has been blown into the conduit.This will aid the
user in selecting the appropriate line for the job.
Knowing the approximate length of the conduit run will
prevent selecting a line too short for the run. For example, if
lightweight pull line is being placed in
3
⁄
4
" conduit with a
estimated length of 195' to 200', select a 300'. Power Saver™
line package for the run. An alternate solution would be to
use a
3
⁄
4
" foam line carrier pulling bulk nylon line. Either
selection would insure an adequate length of line.
7.3 Selecting the Pull Line
It is not possible to foresee all conduit situations that may be
encountered, therefore, the following is presented as a guide
in selecting pull line. Determine which best fits the situation;
whether the line is to be used for conduit identification, pulling
in a larger line or rope, pulling in wire or for wire pulls at a
later date.
1.
Identification of a conduit termination where multiple
conduit runs originate from a single location.
Recommended line: Power Saver™ Line Packages or
Bulk Nylon Line.
2. Placing a line in the conduit for use at a later date.
Recommended line: Small conduit
1
⁄
2
",
3
⁄
4
" and 1" — Power
Saver™ Line Packages, Bulk Nylon Line or PL232 Pull
Line. Larger conduit 1
1
⁄
4
" through 6" — Tag-Along™ Line
Packages, PL232 or PL235.
3. Pulling in larger line, rope or steel winch cable.
Recommended line: Small conduit — same as above.
Larger conduit PL232, PL235 or Poly Rope.
4. Pulling wire in conduit. Recommended line: PL232,
PL235 or Poly Rope.
4
Blower Outlet
Power Unit
Vacuum Inlet
Recovery Compartment
Tool Storage Compartment
Figure 4. Blo-Vac™
Figure 3. B3000 Super Blower
