Aluminum Reverse Threaded Couplers (For SIDR)
The sharp buttress type threads withstand high pulling loads that meet or exceed the Bellcore tensile standard of 1000 lbs. These coupling are machined with a straight thread and have a long counterbore lead-in for straight, easy starting.The couplings incorporate a wide, eight pitch thread angle which greatly reduces the number of revolutions necessary to install the couplings. These versatile couplings can be used in manholes, direct bury, aerial, or any application except where an air or water tight connection is required. This group of couplers is made for SIDR duct.
* In wet environments or submerged in water.
* In strong acidic or alkaline environments outside the PH range of 4 to 8.
* Near salt water or direct exposure to road salt run off.
* In concrete or cement stabalized sand.
Consult your project engineer.
