I have seen thread about this valve type on this website..
""Posted by: djack77494 Sep 7 2005, 06:24 PM
MTV,
I think there is a misunderstanding of the situation. PSV's are often spared to allow testing of one PSV while a
second remains active. In this way, the safety of the system is not...
I'm trying to find following material :
Ball valve - Class ANSI 150 - RF flanged ends - Full bore - 6"
Body : cast steel - ball : 316 - Seat : PTFE - Lever operated with car seal open & closed locking device
Do you know a manufacturer offers car seal open valve in his products range ?
