I have the same burner (have yet to get it on a stand, and use it, but it worked in test firing). When I asked the guys at Tejassmokers.com, they said that each jet was its own orifice. What you need is a 1-20psi regulator and several inches of 1/2" or 3/8" pipe leading to it to reduce the pressure. A 3/8" MFL fitting will attach it to your regulator/gas source. Then the regulator can be turned up or down to control the flame, as per usual. Hope this helps
Dan