| 20090272523 | Methane Gas Wellhead - A methane gas wellhead, having: a body having a pair of side outlets and a top outlet; a mandrel dimensioned to be received into the top outlet; and a cover plate dimensioned to be received over the mandrel, and to hold the mandrel in the top outlet when the cover plate is secured to the top of the body; or a body having a pair of side outlets and a top outlet; and a mandrel dimensioned to be received into the top outlet, wherein the mandrel is a negative pressure mandrel, and wherein the top outlet and the mandrel are dimensioned to receive an O-ring seal therebetween. | 11-05-2009 |
