Housing with intersecting passages

A housing for use in high-pressure fluid applications, the housing being provided with:

• a first passage defining a first axis (P1);
• and
• a second passage defining a second axis (P2);
• wherein:
• a third axis (P3) is mutually orthogonal to the first axis (P1) and the second axis (P2);
• the first and second passages intersect at an opening defined by an intersection at one end of the second passage;
• and
• the intersection defines a first internal dimension (D1) parallel to the first axis (P1) and a second internal dimension (D2) parallel to the third axis (P3);
• the intersection being shaped so that, when sectioned on a plane normal to the second axis (P2) and not intersecting the first passage, the intersection defines:
• an ellipse (E) in the plane and centred on the second axis (P2), the ellipse having a major axis (G) equal in length to the second internal dimension (D2) and a minor axis (F) equal in length to the first internal dimension (D1);
• a rectangle (M) with a first vertex on the first axis (P2), a second vertex at an end of the minor axis (F) of the ellipse (E);
• a third vertex at an end of the major axis (G) of the ellipse (E) and a fourth vertex outside the ellipse (E);
• and
• a diagonal (H) which passes through the first vertex and the fourth vertex of the ellipse;
• wherein:
• a wall of the intersection describes a curve in the plane, the curve passing through the second vertex and the third vertex of the rectangle (M) and a point which is outside the ellipse (E) and which lies on a line (J) which extends from the first vertex of the rectangle (M) and at an angle (L) from the diagonal (H);
• and
• the point is offset from an intersection of the line (J) with the ellipse (E) by an offset distance (K).