Temperature ranges What is the maximum temperature for cast iron soil pipe and fittings?
The limiting factor in the operating temperature range for cast iron soil pipe and fittings is the gasket material. ASTM C564 gasket materials can be safely used up to 212°F. If a special situation requires an operating temperature above this limit, special gaskets can be used, but these are costly and not readily available. It is always wise to check with the pipe and fittings manufacturers before specifying a special gasket.