Fitting and System for Connecting Pipes with a Functional Unit

A fitting or connecting to a pipe,

• with a base body having at least one pipe section,
• with a pressing section connected to the pipe section and
• with a functional unit connected to the pressing section,
• wherein the functional unit comprises a functional ring, a sealing element and a fixing element,
• wherein the functional ring has an outer section arranged radially outside the pressing section and an inner section arranged inside the pressing section, and
• wherein the inner section positions the sealing element and the fixing element within the pressing section,
• wherein
• the inner section of the functional unit has a plurality of recesses for receiving individual cutting elements of the fixing element or
• the fixing element is at least section-wise ring-shaped with at least one cutting element and the inner section has a ring-shaped recess for accommodating the fixing element.

A system for connecting pipes,

• with at least one base body for a fitting for connecting to a pipe, wherein the base body has at least one pipe section and a pressing section connected to the pipe section and
• with at least two functional units,
• wherein the functional units each comprise a functional ring, a sealing element and a fixing element and wherein the respective functional ring, when the functional unit is connected to the pressing section, has an outer section arranged radially outside the pressing section and an inner section arranged inside the pressing section, wherein the inner section positions the sealing element and the fixing element within the pressing section,
• wherein at least two functional units differ in the design of at least one of the elements functional ring, sealing element and/or fixing element and/or, if applicable, reinforcement ring.