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PVC Bender Blankets are used for making offset, kick
and 90
o
bends on PVC conduit through schedule 40.
Three models of blankets are available to bend
1
⁄2"
through 4" pipe. Smaller,
1
⁄2" through 2" pipe, will bend to
90
o
in one bend. Larger sizes, 2" through 4", require a
series of smaller bends to reach a full 90
o
. See table “A”
for maximum bend angles in one bend.
Time required to heat pipe to bendable temperatures
will vary with air temperature, wind conditions and line
voltage. Typical warm-up times are shown in table “B”.
During warm-up nothing should touch the blanket
surfaces. Support PVC off the ground on each end.
Do not allow blanket to touch supports.
When bending pipe outdoors, plug both ends to prevent
wind from entering and cooling pipe. Wrap the blanket
around the pipe with the open edges on the bottom and
overlapped or butted together.
Support each PVC end off the ground. Temperatures
below 72
o
F. will lengthen heating time. Check pipe
flexibility every few minutes to determine when pipe is
soft enough to bend.
Bending
1
⁄2" through 1
1
⁄2" PVC
1. Select pipe length and determine location for bend,
and degree of bend needed. Bending pipe on wood
sheets prevents rapid cool-down.
2. Open the blanket and place it around the pipe. Be sure
the exact area to be bent is covered. Very little heat is
conducted beyond the edge of the blanket. Position the
cord
(
thermostat end
)
on bottom of pipe.
3. Plug power cord in a 120V AC outlet. Wait 4 or 5
minutes, then check pipe flexibility by trying to bend it.
If pipe resists bending, leave blanket on for 2 or 3
minutes longer. When the pipe bends easily, remove
and unplug the blanket.
Wear protective gloves when handling
the blanket and PVC pipe.
Table B
Electrical Pipe Approximate
Pipe Size Required Support Warm-up Time
1
⁄2" through 1
1
⁄2" 120V - 310 W Wood Blocks - each end 4 to 10 min.
2" 120V - 690 W Wood Blocks - each end 7 to 10 min.
3" 120V - 690 W Wood Blocks - each end 12 to 17 min.
3
1
⁄2" 120V - 1120 W Wood Blocks - each end 15 to 18 min.
4" 120V - 1120 W Wood Blocks - each end 18 to 22 min.
Note: To achieve optimum blanket life, remove blanket carefully by using metal tab to lift blanket. Allow blanket to
cool for 10 minutes before using again. Bender blankets are primarily designed as a custom bending tool, not as a
high production tool. Life cycles of 150 bends are average. Depending on how carefully the blankets are used and
handled, more or less cycles may result.
Table A
Blanket Pipe
Model No. Size Bend Angles
BB5150
1
⁄2" - 1
1
⁄2"90
o
in one bend
BB2030 2" 90
o
in one bend
2
1
⁄2" - 3" 45
o
in one bend
BB3040 3" 90
o
in one bend
3
1
⁄2"60
o
in one bend
4" 30
o
in one bend
!
WARNING
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