another petcock question

[valkyriemc]

turning off the gas is now an automatic thing.

That works well for some people. I would hate it. I love my
OEM valve,

-Mike

Pingel does make a vacuum operated one.  If you really need the auto shut off feature, it has to be a better piece of equipment than the OEM.  

it has always worked great.

They all work great until they stop working great, and they all will stop working great sooner not later compared to a quality piece

Yup., my Ping vacuum model has been working fine for years. Wasn't cheap, took time to alter (lengthen) the pickup tube, and buy and install the red eye adapter hose to fit the new valve, and install a 10 micron fuel filter etc. Probably the best mod I made.
I also "pinned" the original Honda control valve/ knob and you would be hard pressed to know its been modified.