Cable Overblowing Junction Box
The CBS Cable Overblowing Junction Box has been designed to install a new cable or duct-tubes into an existing occupied sub-duct (subject to space being available).
The Cable Overblowing Junction Box comprises a robust aluminium base and lid that form a pressurised air chamber into which one end of an existing occupied sub-duct can be attached. The existing cable can exit the Cable Overblowing Junction Box through an opening that has 3 cable seal slots, one of which will house the seal to suit the size of the existing cable. The third branch is then connected to a CBS Cable Blowing Machine via. a short slave length of sub-duct for the installation of the extra cable or tube(s).
A range of Overblowing junction boxes are available to suit the outside diameter of the sub-duct.
The maximum diameter of a new cable / tube(s) for installation is dependent on the diameter of the existing cable and duct bore.
It is the responsibility of the operator to ensure that the cable / tube(s) to be installed are compatible with the existing sub-duct and installed cable configuration.
Duct range (Note: one duct O.D. size per unit)
Minimum 25 mm O.D
Maximum 50 mm O.D
Max. operating pressure 12 Bar
0 up to 25mm : 4m³/min 150 CFM
26 up to 30mm : 5m³/min 185 CFM
31 up to 35mm : 7m³/min 250 CFM
36 up to 40mm : 10m³/min 375 CFM
41 up to 44mm : 12m³/min 450 CFM
LENGTH: 295 mm
HEIGHT: 74 mm
WIDTH: 170 mm
WEIGHT: 4 kg