Thank you ChasBean1, but because of my ignorance, I still do not have full understanding - maybe no understanding at all. Perhaps I should tell how I came across the question about bypass balancing valve installed in conjunction with 3-way control valve. I was trying to get myself understood how...
thread403-320544
A question to Waramanga: "According to my CIBSE reference, a three way valve on a coil needs a balancing valve on the bypass line along with one in the return line back to the chiller/boiler. That bypass valve gets set to provide the same dP as the coil when in full bypass...