Hello,
These days I read some book about control valve. When I try to proceed deduction on control valve formula, I encounter difficulty. Could you tell me what basical book I can get help from. Or you can tell me some article I should read.
Please tell me how the accessory deduct.
Thank you in advance

Please visit HERE...hope you can find something...

I cannot open it. What wrong with it?

Thank your reply.

Funny...it works fine for me ! Is your server block this url ? Check with your administrator.

Works for me too.
Just try it again.
If its still not working id start with www.cheresources.com/valvezz.shtml

This is the address. Just copy it into your Browser.

http://webwormcpt.wwcpt.googlepages.com/cv

JE and Phil...Thanks.