Patent ID: 7971637

Claim:
A surface control system for a well, comprising: a main housing having a longitudinal axis, an outer wall, a first end, and a second end; a main bore extending through said main housing along said longitudinal axis, wherein said main bore extends from said first end to said second end of said main housing; a side port through said main bore between said first end and said second end of said main housing, said side port being equipped with a flange interface; a first valve for controlling a fluid or gas flow through said main bore and for severing a work string running through said main bore, wherein said first valve is positioned between said side port and said first end of said main housing; and a second valve for controlling said fluid or gas flow through said main bore and for severing said work string running through said main bore, wherein said second valve is positioned between said side port and said second end of said main housing.