Can anybody clarify the valving/pump arrangement for a pump priming system which then supports the formation of siphon. I am looking for practical examples where this has been employed.

I have a 10" 150 psig steam line that runs between two boilers on a large university campus (transfer line). One section of the pipe midway between the boilers is in a walkable tunnel.

Does anyone know what hazards are associated with having the relief valve bonnet vent plugged and it is the type of relief that requires no plug?

For the design of oil & gas valves, what is the difference in using either API 6D or ASME B16.34?

I have been looking at the floating piston design from Thomasson for recip compressors, and while it is certainly a different purpose it kind of reminds me of the Dresser VIP piston.

The pipe spec I'm using calls our Flexitallic (sp?) spiral wound gaskets for natural gas piping systems.

As some of you already know I

I am designing a pipe siphon to effect the drawdown of a reservoir under emergency conditions. To give a sense of scale I've done a preliminary sizing at 0.5m dia.