Here's a 120v solution:
I'm in the process of building my stand (taking lots of ideas from JonW) and these are the valves I'm using for gas control (http://www.ebay.com/itm/1-2-Brass-Electric-Solenoid-Valve-110-120-VAC-Water-Air-Fuels-Gas-VITON-B21V-/290716195361?pt=LH_DefaultDomain_0&hash=item43b009 1a21#ht_2096wt_907
. Supply 120vac to them and the solenoid opens.
Then, you need some form of a pilot, either a standing flame (might be easiest, but susceptible to wind), grill ignitor, or hot surface ignitor. I'm going with HSIs myself (Search Honeywell Hot Surface Igniter model number Q3200U1004 on ebay). However, with the HSIs you want to be able to turn them on for a few seconds before you open the gas (using the BCS-462 for my stand to start the HSI's few seconds before triggering the solenoid valves). If you go the pilot flame route, you will just need to control the 120vac to the solenoid with a simple switch.
I'm not to familiar with the Blichmann top tier, so i'm not sure what all the options could be. Just figured I would give you one solution.