Marketing InformationThe HoldRite® #117 Series no hub fitting restraints are designed to reinforce no hub cast iron installations in accordance with the installation instructions of US cast iron soil pipe manufacturers and the 2006 CISPI installation handbook. The #117-3S thru #117-8S (3 to 8 in pipe size) restraints retain a straight coupling joint. All four-stainless steel bands must be tightened to 60 in-lb minimum. When installed correctly, these restraint brackets achieve a safe thrust pressure rating equal to 50 ft head of water pressure.