Figure 3-20.Making a joint on horizontal piping.
and hub to be joined, keeping the spigot and hub in a
straight line. The spigot end of the pipe or fitting can be
forced into the gasket by using an assembly tool, as
shown in figure 3-22.
When joining CISP as a no-hub joint, place a
neoprene or an elastomeric gasket on the end of one
pipe and the stainless steel shield and clamp assembly,
as shown in figure 3-23, on the end of the other pipe.
Firmly seat the pipe ends against the integrally molded
shoulder inside the gasket. Slide the shield and clamps
into position over the gasket and tighten the stainless
steel clamps alternately and firmly to about 60 inch-
pounds of torque. A torque wrench set at 60 inch-
pounds is available in the NMCB cast-iron kit
Figure 3-21.Tamping lead wool.
Figure 3-22.Compression joint assembly.
Figure 3-23.No-hub pipe and fittings.
Vitrified Clay and Concrete Pipe
Vitrified clay pipe is made of moistened powdered
clay. It is available in laying lengths of 2, 2 1/2, and 3
feet and in diameters ranging from 4 to 42 inches. Like
cast-iron soil pipe, it has a bell end and a spigot end to
make joining easy.