Housing with intersecting passages for high pressure fluid applications

A housing (30) for use in high pressure fluid applications, the housing comprising:

• a first drilling (32a, 32b), defining a first axis, and having a region of enlarged diameter (32b) bounded by an upper boundary (36) in a first plane and a lower boundary (38) in a second plane;
• and
• a second drilling (42), defining a second axis, and intersecting with the first drilling (32a, 32b) via an intersection region (44);
• wherein the intersection region (44) includes,
• a first substantially flat surface (54) which defines a ceiling of the intersection region (44) and which intersects the upper boundary (36), and
• a second substantially flat surface (56) which is opposed to the first substantially flat surface (56) and which defines a floor of the intersection region (44) and intersects the lower boundary (38),
• wherein the intersection region (44) further includes side walls defined by first and second opposed tangential surfaces (50, 52) which form a tangent to the circumference of the first drilling (32a, 32b),
• wherein the intersection region (44) further includes side walls defined by first and second opposed radiused surfaces (46, 48);
• and
• wherein the first and second substantially flat surfaces (54, 56) are substantially perpendicular to the first axis so as to align with the plane of a respective one of the upper and lower boundaries (36, 38).