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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….
Read MoreIn our last blog, we cautioned against using pressure independent control (PIC) valves when attempting to apply area control with reset. But why is that a problem? Aren’t PIC valves the greatest thing since microwave ovens?...
Read MoreWe’ve talked about manual versus automatic balancing methods and we’ve talked about curve control versus area control. Now it’s time to consider the balance valve type impact on the pump control area. Let’s start this conversation with a question...
Read MoreToday’s flow balancing devices for variable flow pumping systems fall into three main types...
Read MoreLast week we learned that ASHRAE defines a balanced system as one that delivers a flow sufficient to achieve a 97% heat transfer at each coil. This week will look at why we balance and outline the strategies that are ...
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