Apparatus for pressure control in a fuel feed of an internal combustion engine having common rail injection

An apparatus (1) for pressure control in a fuel feed of an internal combustion engine having common rail injection, comprising:

• a housing (10) with an opening (15);
• and
• a high pressure valve (30),
• wherein a uniform mating surface (16) is provided in the opening (15) on the housing (10),
• wherein the high pressure valve (30) is at least partially inserted on an end side into the opening (15) of the housing (10),
• wherein, in the inserted state, the high pressure valve (30) in the opening (15) is connected by a connection (20) in a pressure-tight manner to the housing (10) and the connection (20) comprises a first portion (21), a second portion (22), and a third portion (23),
• wherein the first portion (21) the second portion (22) and the third portion (23) divide a hollow shaft section (34) into three step-shaped outer surfaces (37a, 37b, 37c) having different mechanical and/or geometrical properties, and
• wherein the third portion (23) forms a press-fit connection having a smaller interference than an interference of the first portion (21) and/or an interference of the second portion (22).