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flow coefficient?
Posted: Sat Oct 28, 2006 7:59 pm
by judgment_arms
Say, what I is the flow coefficient of a 3” coaxial piston valve?
I need to know for GGDT. Thanks all for answering all my questions.
Posted: Sat Oct 28, 2006 8:02 pm
by SpudStuff
Do you have a cronie? Otherwise i'd say 30 - 40%.
Posted: Sat Oct 28, 2006 8:05 pm
by judgment_arms
No but I wish I did. Do ya know where I can get a cheep cronie? thanks
Posted: Sat Oct 28, 2006 8:08 pm
by SpudStuff
They usually run about $70-120
Posted: Sat Oct 28, 2006 8:14 pm
by judgment_arms
ya well I’m to cheep to pay that much. Guess I’d better start look at the flea market.
Posted: Sat Oct 28, 2006 8:21 pm
by schmanman
but where do you get them (a site would be nice). I will go check ebay now.
Posted: Sat Oct 28, 2006 8:24 pm
by frankrede
Paintball stores sell chronies.
Posted: Sat Oct 28, 2006 8:24 pm
by SpudStuff
www.Froogle.com, THE best place to look for a product.
Posted: Sat Oct 28, 2006 8:37 pm
by schmanman
ok, thanks. how much do they go for at paintball stores?
Posted: Sat Oct 28, 2006 8:40 pm
by boilingleadbath
Generaly, I use about 50% for coaxial piston valves.
I don't know how accurate that is, and it's not exactly backed up by crono data... but 30% is way too low, and the HVPL-01 is giving me numbers in that vicinity. (samewhere between 55 and 80some%)
Posted: Tue Oct 31, 2006 8:19 am
by POS
what does that flow coefficient mean ? Dont understand ...
Posted: Tue Oct 31, 2006 2:17 pm
by SquishY
I was wondering this last night, when I put in a higher number it says that it's optimistic but is 100 an achievable if this is how much flow is there with out using a burst disk.
Posted: Tue Oct 31, 2006 2:59 pm
by boilingleadbath
Squishy, I'm pretty sure that even a strait section of pipe has a flow coef. lower than 100%.
Posted: Tue Oct 31, 2006 3:59 pm
by joannaardway
As I said in the other topic, it's about 65% for straight pipe.
What 100% represents, I don't know.
Posted: Tue Oct 31, 2006 4:25 pm
by POS
O, but WTH does it mean ?