A valve position indicator is directly coupled to a valve shaft. The indicator has a gauge that directly indicates rotation of a valve shaft in a subterranean valve.
Web www.patentalert.com
< On-line coal flow control mechanism for vertical spindle mills
> Method for forming a green tread rubber and a pneumatic tire formed by using green tread rubber
> Film metal mould crystallizer and method for casting using the same
HOME | NEW USER | LOGIN | SUBSCRIPTIONS | SEARCH | GUESTBOOK | CONTACT