PIping Trivia

When are swage, reducer and reducing coupling made for the line reductions in process piping?
Fugure 8 (spectacle blind) and paddle type blanks & spacers - when do we use them?
Why do u need a double block and bleed valve for class 600# application that can be open to atmosphere?
Normally the valve for cryo service is extended bonnet (EB) is it ok to substiture a regular valve if the EB is not available? Is it OK to use a solid wedge valve on high pressure high temp steam service?
Is it true that a pressure seal valve is better than a bolted bonnet valve for steam application?
Is it OK to use piping to support electrical conduits or cable trays? Received on Sun Oct 07 11:27:00 2001