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Connecting Cast Iron To Pex Piping

Question: I have a hot water heating system with pump (not a gravity system) using cast iron piping and cast iron radiators (baseboard and standing). When we remodeled the kitchen we removed the old tall wall radiator and put in a baseboard kick heater. Is it possible to use PEX tubing to tie this into the old radiator stubs or do I need a complete separate zone?

Answer: If your question is "can you connect cast iron pipe to PEX tubing within a zone", the answer is yes. The delivery system does not have effect the water being pumped. Make sure you use proper conversion fittings.



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