A fitting for connecting a pipe,
- wherein the fitting consists of a lead-free and nickel-free red brass alloy and comprises a hollow body made in one piece extending in a pipe insertion direction about a longitudinal axis,
- wherein the hollow body comprises at least one pressing section, which can be plastically deformed inwardly in a radial direction by means of a press tool, which can be attached to the fitting prior to pressing and which can be detached from the fitting after pressing,
- wherein, prior to being plastically deformed inwardly in the radial direction by pressing, the pressing section comprises a first portion, a second portion and a third portion, wherein the first portion of the pressing section extends from an end face of the fitting to a circumferential bead that projects outwardly in the radial direction and which, on an inside of the hollow body, forms a groove for accommodating a sealing ring, wherein the second portion of the pressing section is defined by the circumferential bead, wherein the third portion of the pressing section extends from the circumferential bead to a section of the hollow body which has a larger outer diameter than an outer diameter of the third portion, wherein an outer diameter of the first portion is the same as the outer diameter of the third portion, and wherein the outer diameters of the first portion and the third portion are constant over their entire lengths, respectively,
- wherein the fitting further comprises pipe bearing sections on the inside on both sides of the groove, wherein each of said pipe bearing sections has an inner surface that extends parallel to the longitudinal axis prior to pressing,
- wherein the hollow body further comprises at least two recesses provided on the inside within the pressing section,
- wherein one of the at least two recesses is arranged upstream of the circumferential bead relative to the pipe insertion direction, wherein one of the pipe bearing sections is arranged between the circumferential bead and said one of the at least two recesses,
- wherein an other of the at least two recesses is arranged downstream of the circumferential bead relative to the pipe insertion direction, wherein an other of the pipe bearing sections is arranged between the circumferential bead and said other of the at least two recesses,
- wherein the pressing section further comprises at least two circumferential cutting blades, which are integral with the hollow body on the inside, each of which comprises a cutting edge that is formed by a first blade surface and a corresponding second blade surface, said cutting blades both being configured to engage with an outer surface of the same pipe,
- wherein one of the at least two circumferential cutting blades is arranged upstream of the circumferential bead relative to the pipe insertion direction,
- wherein an other of the at least two circumferential cutting blades is arranged downstream of the circumferential bead relative to the pipe insertion direction,
- wherein each of said at least two recesses comprises a side wall that defines the corresponding second blade surface of one of the at least two circumferential cutting blades,
- wherein, when the fitting is viewed in a halving cross section parallel to the longitudinal axis in a non-pressed state, an angle α between a first ray and a second ray having a common endpoint at the cutting edge of at least one of said circumferential cutting blades is 70° or greater, wherein the first ray extends from the endpoint toward the inside of the hollow body along a line extending in a plane of the cross section defined by the first blade surface, and wherein the second ray extends from the endpoint away from the second blade surface toward the longitudinal axis of the hollow body along a line extending in the plane of the cross section defined by the corresponding second blade surface,
- wherein, when the fitting is viewed in the halving cross section parallel to the longitudinal axis in the non-pressed state, an angle β between the second ray and a third ray extending from the common endpoint along a line extending parallel to the longitudinal axis in the plane of the cross section in a direction opposite the pipe insertion direction is 60° or greater,
- wherein the first and third portions of the pressing section contain only one cutting blade each, and
- wherein the first blade surface of the circumferential cutting blade arranged upstream of the circumferential bead relative to the pipe insertion direction defines a conical surface that extends from the end face of the fitting to the cutting edge of the circumferential cutting blade arranged upstream of the circumferential bead relative to the pipe insertion direction.