Plumber Red Seal · Question
A one-pipe series hydronic heating loop has several radiators. If one radiator valve is completely closed, what is the immediate effect on the other radiators in that series loop?
In a one-pipe series loop, all radiators are connected in sequence, meaning the entire flow of water passes through each radiator. If one radiator's valve is co
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Question: A one-pipe series hydronic heating loop has several radiators. If one radiator valve is completely closed, what is the immediate effect on the other radiators in that series loop?
Answer options:
- The other radiators will receive more flow and become hotter. ✅ The flow to all subsequent radiators in the series will stop.
- The water temperature entering the other radiators will increase.
- The flow to all subsequent radiators in the series will decrease slightly.
Correct answer: The flow to all subsequent radiators in the series will stop.
Explanation: In a one-pipe series loop, all radiators are connected in sequence, meaning the entire flow of water passes through each radiator. If one radiator's valve is completely closed, it blocks the flow for all subsequent radiators in that specific series, effectively stopping their heat output. This is a common characteristic and limitation of series piping.
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