A hydrocarbon production device comprising: a port formed in the hydrocarbon production device, the port having a larger diameter portion and a smaller diameter portion, the larger diameter portion having an axis and extending inward into the housing from an exterior of the housing to an outward facing shoulder, the smaller diameter portion extending inward from the outward facing shoulder; an annular fitting assembly inserted into the port, the annular fitting assembly having external fitting assembly threads secured to mating internal fitting assembly threads in the smaller diameter portion; a passage extending axially through the fitting assembly; a first outer diameter seal located between the fitting assembly and the port, the first outer diameter seal being energized into sealing engagement by an inward axial force on the fitting assembly in response to the external fitting assembly threads engaging the internal fitting assembly threads; a packing assembly in an annulus between the fitting assembly and an inner surface of the larger diameter of the port; a packing gland having external packing gland threads that engage mating internal packing gland threads in the larger diameter portion outward from the internal fitting assembly threads, the packing gland having an inner end that engages and exerts an axial force on the packing assembly in response to securing the external packing gland threads to the internal packing gland threads, defining a second outer diameter seal between the fitting assembly and the port; and a ball urged by a spring into sealing engagement with a seat in the passage, defining a first inner diameter seal. a port formed in the hydrocarbon production device, the port having a larger diameter portion and a smaller diameter portion, the larger diameter portion having an axis and extending inward into the housing from an exterior of the housing to an outward facing shoulder, the smaller diameter portion extending inward from the outward facing shoulder; an annular fitting assembly inserted into the port, the annular fitting assembly having external fitting assembly threads secured to mating internal fitting assembly threads in the smaller diameter portion; a passage extending axially through the fitting assembly; a first outer diameter seal located between the fitting assembly and the port, the first outer diameter seal being energized into sealing engagement by an inward axial force on the fitting assembly in response to the external fitting assembly threads engaging the internal fitting assembly threads; a packing assembly in an annulus between the fitting assembly and an inner surface of the larger diameter of the port; a packing gland having external packing gland threads that engage mating internal packing gland threads in the larger diameter portion outward from the internal fitting assembly threads, the packing gland having an inner end that engages and exerts an axial force on the packing assembly in response to securing the external packing gland threads to the internal packing gland threads, defining a second outer diameter seal between the fitting assembly and the port; and a ball urged by a spring into sealing engagement with a seat in the passage, defining a first inner diameter seal.