When installing cast iron no-hub, the bands shall be torqued to how many inch pounds?

When installing cast iron no-hub fittings, the proper torque for the bands is crucial for ensuring a secure and leak-free connection. The recommended torque of 60 inch-pounds is established as a standard to provide sufficient clamping force without damaging the material or compromising the integrity of the joint. This level of torque helps to ensure that the flexible coupling will maintain a tight seal against joint movements and vibrations that may occur over time, which is particularly important in plumbing systems that may experience expansion and contraction due to temperature changes.

The specification of 60 inch-pounds strikes a balance between being tight enough to prevent leaks and protecting the band and pipe from potential physical damage. It reflects industry best practices and guidelines for mechanical installation of no-hub systems, thus fostering long-term reliability and performance.