flow thru elbow/rad valve

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I hope that this isn't a silly question but does water flow faster through an elbow compared to a fully open rad valve (assuming the other rad valve is also fully open?)
 
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Depends on the relationship between the size of the openings and the size of the tube delivering the fluid to the elbow or valve. Actual size is irrelevant.

Assuming that flow velocity is equal as it enters either the elbow or the valve, velocity thru the elbow or valve will be dependant on its size and other factors like the internal surface smoothness etc. The right angle will drastically reduce the velocity also.

The rad valve will, therefore, offer more resistance than an elbow so it could be safe to assume that flow thru an elbow will be faster than thru a rad valve (all other factors being equal).

I am bored by the way :D
 
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Breesey
Thanks for your comments, I know it's boring but it will help you with my problem, I don't want to bore you with that as well.
Just one more question, any guesses on flow reduction, 30%? :oops:
 
Breesey
Thanks for your comments, I know it's boring but it will help you with my problem, I don't want to bore you with that as well.
Just one more question, any guesses on flow reduction, 30%? :oops:

I didn't mean you were boring me. My extended answer was a result of my being bored today!!

To answer your question, not sure. Such comparitive data is available, but usually generic data is used for calculating such losses in systems.
 

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