Mark Wagner
Well-known member
Here is some good information on valves.
http://www.onevalveforlife.com/ovflcontenttmp.aspx?section=1&page=0
and also
http://www.onevalveforlife.com/documents/1of3.pdf
http://www.onevalveforlife.com/ovflcontenttmp.aspx?section=1&page=0
and also
http://www.onevalveforlife.com/documents/1of3.pdf