Terminal - Model Megalug 1700 Series -Ductile Iron Pipe Bell Restraint
Ductile iron pipe bell restraint shall consist of a wedge action restraint ring on the spigot joined to a split ductile iron ring behind the bell. The restraint ring shall have individually actuated wedges that increase their resistance to pull-out as pressure or external forces increase. The restraint ring and its wedging components shall be made of minimum grade 65-45-12 ductile iron conforming to ASTM A536. The wedges shall be heat treated to a minimum hardness of 370 BHN. Torque limiting twist off nuts shall be used to insure proper actuation of the restraining wedges. The split ring shall be made of a minimum grade of 65-45-12 ductile iron conforming to ASTM A536.
The restraint devices shall be coated using MEGA-BOND. (For complete specifications on MEGA-BOND visit www.ebaa.com.) The connecting tie rods that join the two rings shall be made of low alloy steel that conforms to ANSI/AWWA C111/A21.11. Side clamp bolts shall be of SAE J429 Grade 5 material. The assembly shall have a rated pressure with a minimum two to one safety factor of 350 PSI in the sixteen inch size and below 250 PSI in the eighteen through thirty-six inch sizes. The product shall be the Series 1700 Megalug® restraint harness, manufactured by EBAA Iron, Inc., or approved equal.
All EGAA restraint products intended for installation on ductile iron pipe are designed for and limited to use on ductile iron pipes that comply with the requirements of ANSI/AWWA C151/A21.51 and have a Brinell Hardness or equivalent measurement value that does not exceed 230BHN. These requirements apply to the entire pipe wall profile at all restraining wedge engagement points and to the full penetration depth of each restraining wedge.
- Restraint harness for ductile iron pipe to pipe push on joints
- Restraint harness meets or exceeds ANSI/AWWA C151A21.51 and ANSI/ AWWA C150/A21.50 standards
- Minimum 2 to 1 safety factor
- MEGALUG Restraint Ring on spigot side of joint
- Split Bell Ring design for ease of installation
- Constructed of ASTM A536 ductile iron
- MEGA-BOND8 Restraint Coating System
For use on water or wastewater pipelines subject to hydrostatic pressure and tested in accordance with either AWWA C600 or ASTM D2774.