Gardner Bender BV208DA - Manual (Page 9)

9
BV23 and BV24 Seal-Off
The larger internal diameter of BV23 and BV24 seal-offs
allows more efficient flow of air when used with high
volume blowers and Blo-Vac™ systems. The BV23 and
BV24 seal-offs are used in 1
1 ⁄ 4 ” through 2 1 ⁄ 2 ” and 2 1 ⁄ 2 ”
through 6” conduit respectively.
H. Line Carriers
The line carrier is the movable “piston” that supplies the
force necessary to pull the line through the conduit when
propelled by the blower or Blo-Vac™ system. They are
constructed of durable material and is reusable.
Foam Line Carriers
GB/JetLine ® foam line
carriers are
manufactured in 12 sizes
for use in conduit
1 ⁄ 2 ”
through 6”. The foam line
carrier, as it travels
through the conduit, will
clean out water and loose
debris providing the head
of water is not greater
than the maximum water
lift of the blower or Blo-Vac™ power unit. Sizes for 1
1 ⁄ 4 ”
through 6” conduit are provided with a pulling eye on one
end and a hook on the other end. The hook provides a
convenient means of attaching the Tag-Along™ line
package. If pull line is used, it should be attached to the
pulling eye.
Table 8
The Inflatables ® Line Carrier
The Inflatables ® line carrier has less friction in the
conduit and is faster running than the foam line carrier.
The flexible nature of the line carrier allows it to inflate to
the conduit diameter and pass over local obstructions
that would stop a foam line carrier.
In large conduit 4”, 5” and 6”, the Inflatables ® may lie
against the conduit wall. It may be necessary to point the
seal-off nozzle toward the inflatable sleeve to achieve
initial inflation. This is accomplished by tilting the seal-off
nozzle in the conduit entrance.
When vacuuming an inflatable in the conduit it may be
necessary to fluff it out and shake it to achieve inflation.
Table 9
The Inflatables ® Line Carriers
Plastic Line Carriers
The GB/JetLine ® slotted
double skirted plastic line
carriers were developed
for the Blo-Vac™ conduit
fishing systems for use in
long, single bore
underground ducts. The
low friction properties of
the plastic makes it a fast
running line carrier. If the
line carrier encounters a blockage where it cannot get
through, the slotted skirt allows the line carrier to be
pulled out past joints or steps in the duct. A hard tug on
the pull line will cause the petals to turn inside out
allowing for easy withdrawal.
Table 10
Plastic Line Carriers
Cat. No. Conduit Size Cat. No. Conduit Size
FC1 1 ⁄ 2 ” FC7 2 1 ⁄ 2 ”
FC2 3 ⁄ 4 ” FC8 3”
FC3 1” FC9 3 1 ⁄ 2 ”
FC4 1 1 ⁄ 4 ” FC10 4”
FC5 1 1 ⁄ 2 ” FC11 5”
FC6 2” FC12 6”
Catalog No. Conduit Size
F125 3 ⁄ 4 ”, 1” and 1 1 ⁄ 4 ”
F250 1 1 ⁄ 2 ”, 2” and 2 1 ⁄ 2 ”
F400 3”, 3 1 ⁄ 2 ” and 4”
F600 5” and 6”
Cat. No. Conduit Size Cat. No. Conduit Size
M2000 2” M4000 4”
M2500 2 1 ⁄ 2 ” M5000 5”
M3000 3” M6000 6”
M3500 3 1 ⁄ 2 ”
FIG. 17
FIG 18
FIG. 15 FIG 16
FIG 19
BV23 Short Seal-Off BV24 Short Seal-Off
The Inflatables ® Line Carrier
Missile Line Carrier
Foam Line Carriers
Foam Line Carriers
RPS-0134 3/29/00 2:10 PM Page 9