http://cgi.ebay.com/NEW-ASCO-8040G022-NC-Fuel-Gas-Solenoid-Valve-1-2-NPT_W0QQitemZ150324100443QQihZ005QQcategoryZ53303QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
here is a good deal on a fuel gas asco valve. it is rated for a max pressure of 2psi however, so it will only be suitable for people using natural gas.
