The really old recovery tanks (like my 1996) did not have a overflow hose. The newer ones like yours had one. Not sure if the older caps were designed to have a blow off valve at a certain pressure. I have not heard my recovery tank or cap "hiss" (yet).
This thread has some information.
http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=trouble&Number=1083784&Forum=trouble&Words=silversvts&Match=Entire%20Phrase&Searchpage=0&Limit=25&Old=6months&Main=1083748&Search=true#Post1083784
Last edited by Tony2005; 02/28/06 03:29 PM.
