This manual provides installation instructions for Leemco LH-Series joint restraints, including torque requirements and hardware specifications.
The document serves as an installation guide for the Leemco LH-Series joint restraint system. It details the necessary tools, such as torque wrenches and pipe edge grinders, and outlines pre-installation checks like inspecting rubber seals and checking for cracks or defects in components.
Specific instructions cover various applications including elbows, tees, reducers, and caps. The guide provides specific data on minimum restraint lengths based on elbow angles and step reductions, as well as detailed torque specifications (in ft-lbs) corresponding to different pipe sizes and hardware configurations. This manual is written in Chinese.
| Torque requirement for pipe size 2 to 6 inch | 20 ft-lbs |
|---|---|
| Torque requirement for pipe size 4 to 8 inch | 50 ft-lbs |
| Torque requirement for pipe size 10 to 24 inch | 100 ft-lbs |
Required tools include a torque wrench, socket and open-end wrenches, a pipe edge grinder, sealant/seal lubricant, and W-D 40 or rust remover lubricant.
An 8-inch to 24-inch LH-Series restraint requires four sets of nuts and bolts.
The manual recommends spraying sealant and W-D 40 lubricant on the threaded parts to prevent damage.