8.11.1 Materials
a) All shell fittings and valves are to be of steel, bronze or
other ductile material. Valves of ordinary cast iron or
similar material are not acceptable. All scupper and discharge
pipes are to be of steel or other ductile material.
Refer to [2.1].
b) Plastic is not to be used for the portion of discharge line
from the shell to the first valve.