Is there a significant pressure drop difference in 6" PVC between two 45 elbows compared to one 90 degree long radius elbow? The total price is about the same and either one fits the duct layout.
Is there a significant pressure drop difference in 6" PVC between two 45 elbows compared to one 90 degree long radius elbow? The total price is about the same and either one fits the duct layout.
Depends on the effective radius of both methods...I would think that from an air flow perspective, a true LONG radius continuous curve would be better in performance, but when you are working with available components, two 45º elbows with a short connection in-between get you a higher effective radius than available one-piece alternatives.
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The most expensive tool is the one you buy "cheaply" and often...
The long-radius is usually big bucks but if comparable to two 45s, go with the long radius. For 6" S&D fittings, the long-radius fitting is A LOT more than two 45s so that is why I went the way I did.
I was quoted $22 for a 6" long radius where the radius is 1.5x the diameter, I'm sure. The 45 fittings were $13 each. The 45's give a bigger diameter sweep, but it's not as smooth of a curve. Probably a wash. Thanks for back checking me.