Best Practices for Hydronic Systems Part 9: Three Valves Every Centrifugal Pump Needs

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Best Practices for Hydronic Systems Part 9: Three Valves Every Centrifugal Pump Needs

All centrifugal pumps in HVAC applications should be equipped with a shut-off valve, check valve, and a balance valve. Or, as an alternative, you can choose a valve that….

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Hydronic Balancing Part 7: When to Trim the Pump Impeller

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Hydronic Balancing Part 7: When to Trim the Pump Impeller

Balancing isn’t just about adjusting valves. Sometimes (very often in fact) it is about evaluating the performance of the pump(s) under real world operating conditions. Remember what ASHRAE 90.1 has to say about Hydronic System Balancing: “Hydronic systems shall be proportionately balanced in a manner to first minimizethrottling losses; then the pump impeller shall be trimmed or pump speed shall be adjusted to meet...

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