What Does No Hub Pipe Mean

Intended for use with DWV systems, no-hub couplings are used to join cast iron soil pipe that does not have the traditional Hub and Spigot. They are normally installed using a torque wrench.

What is a hub pipe?

As previously stated, the hub of the pipe is the female “bell” end of the pipe, which leaves the male end of the pipe the no-hub end. The no-hub connection option is probably the most used by nonprofessionals due to the ease of installation. All that is needed is a no-hub coupling to attach the drain to the pipe.

Can no hub couplings be used underground?

Flexible rubber couplings with stainless steel clamps, without a shield, are designed for use below ground. The no-hub coupling shield is designed to adjust to variations in diameters of pipes to be connected.