Sanitary insert, sanitary fitting and use of a sanitary insert

Abstract

The invention relates to a sanitary insert (1) for insertion in a faucet outlet, said sanitary insert (1) comprising a function stage (2), a dome screen (3) and a sealing element (4), wherein the dome screen (3) is designed to form-fittingly hold the sealing element (4) and wherein it is possible to attach the sealing element (4) when the sanitary insert (1) is in an assembled installation position.

Description

[0001] PC 25 0759 C 6 . August 2025

[0002] Sanitary insert, sanitary fitting and use of a sanitary insert

[0003] The invention relates to a sanitary insert for use in a faucet outlet, wherein the sanitary insert comprises a functional stage, a pre-filter screen, and a sealing element. Such a sanitary insert is widely used in practice.

[0004] The invention further relates to a sanitary fitting. Sanitary fittings are known in the prior art. The invention further relates to the use of a sanitary insert. Such a use is known.

[0005] Typical sanitary inserts include, for example, a pre-filter, a reduction stage, a separation stage, a mixing stage, and / or a discharge stage as functional stages, through which fluid flows in that order. Sanitary inserts are also known in which one or more of these stages are missing.

[0006] The reducing stage can be designed, for example, to reduce a flow rate. For instance, the reducing stage can be configured as a throttle, reducing the flow rate by a factor dependent on a pressure difference within a given operating range. Alternatively, the reducing stage can be configured as a flow regulator, reducing the flow rate to a value that is practically or precisely independent of the pressure within a given operating range. Flow regulators often incorporate an elastic control element that is deformable by operating pressure and changes the area of ​​a flow opening depending on the pressure.

[0007] One possible function that can be implemented with a separation stage is to differentiate the flow conditions upstream of the separation stage from the flow conditions downstream of the PC 25 0759 C 2 / 22 6. August 2025

[0008] The separation stage is fluidically decoupled. This is often achieved by an arrangement of separation nozzles, which can be designed, for example, as a separation plate, a diffuser, or in some other way. Another characterization of a separation stage can consist, for example, of separating an incoming water flow into a multitude of individual jets.

[0009] A mixing stage can follow the dispersing stage, typically incorporating flow obstructions to ensure thorough mixing and turbulence of the individual jets generated by the dispersing stage. This mixing stage may also include an air intake, created by a negative pressure behind or at the dispersing stage, which can be used to generate an aerated jet.

[0010] In practice, it is known to insert flow obstructions in the form of grid inserts into the mixing stage, which can be made of different materials.

[0011] A final outlet stage, which can be designed as an outlet structure, for example, can perform rectifying functions to generate a unidirectional outflow. Another function of an outlet stage can be, for example, to form a fluidically permeable termination of the mixing stage.

[0012] The invention is based on the objective of improving the operating and user characteristics of a sanitary component. This objective is achieved by the features of the independent claims. Advantageous embodiments are described in the dependent claims.

[0013] It should be noted that the features listed individually in the dependent claims can be combined with one another in any technologically meaningful way and define further embodiments of the invention. Furthermore, the features specified in the claims are further specified and explained in the description, which also presents further preferred embodiments of the invention.

[0014] To solve the stated problem, the invention proposes the features of claim 1. In particular, according to the invention, for a sanitary insert of the type described above, it is proposed that the front screen be designed to provide a positive-locking retention for the sealing element and that the sealing element can be attached in an assembled position of the sanitary insert. This improves the operating and user characteristics of the sanitary insert.

[0015] For example, the profile of the sealing element (especially perpendicular to a direction of rotation) may have a convex contour. This allows for the use of easily manufactured sealing elements. For instance, the contour can be circular (e.g., in the case of an O-ring) or rectangular (square sealing ring). This allows for the use of common or readily available sealing elements.

[0016] A particular advantage is that the sealing element can be symmetrical to a flip and therefore does not need to be aligned in a specific position. This is especially beneficial for sealing elements with square base shapes and O-rings. Furthermore, this design allows the sealing element to be fitted, which is advantageous because a rubber sealing element stretches better than it compresses. Compared to the prior art, this arrangement of the sealing element can achieve a lower overall height (PC 25 0759 C 4 / 22 6 August 2025). Another advantage is that sanitary inserts without a reduction step can also be used.

[0017] Advantageous embodiments of the invention are described below, which can be combined alone or in combination with the features of other embodiments, optionally together with the features according to claim 1.

[0018] The function of the sealing element is to ensure a seal against the flowing water from the outside of the sanitary fitting, thereby preventing the water from escaping laterally. The flowing water should preferably exit through an outlet structure of the sanitary fitting. This ensures an attractive flow pattern and full functionality of the sanitary fitting.

[0019] Additionally or alternatively, the invention proposes the features of claim 2 to solve the stated problem. In particular, according to the invention, for a sanitary insert of the type described above, it is proposed to solve the aforementioned problem by having a mesh size of the pre-filter screen that is smaller than the clear opening of a subsequent constriction. This allows for reliable filtration of the sanitary insert. Dirt particles or limescale deposits can be filtered by the pre-filter screen, preventing these particles from entering the interior of the sanitary insert and, in particular, from disrupting or impairing the function of a subsequent functional stage (e.g., reduction stage, separation stage, mixing stage, outlet stage).

[0020] In an advantageous design, positive locking can be achieved by a circumferential projection on the feed screen, by an intermittent projection on the feed screen, or by a circumferential groove (PC 25 0759 C 5 / 22 6. August 2025). Alternatively, positive locking can also be provided by a circumferential contour. Thus, simple and reliable positive locking devices are available.

[0021] The term "intermittent" means "interrupted" or "occurring at intervals". It describes something that is not continuous, but occurs at regular or irregular intervals.

[0022] In an advantageous design, the intermittent projection can be configured as a retaining finger or retaining claws. Retaining claws are defined here as curved elements with a claw-like shape. Retaining fingers are defined as elements characterized by a linear shape. Retaining fingers are suitable for locking, while retaining claws offer greater resistance to being pulled off. The retaining fingers can be configured radially or axially.

[0023] In an advantageous design, the attachment sieve can be provided to fix or hold the sealing element radially and additionally or alternatively axially. This prevents the sealing element from slipping in a flowing water flow, thus ensuring the functionality of the sealing element.

[0024] The axial direction refers to the direction of the water flow, specifically the direction of current. The radial direction is orthogonal to the direction of current. Orthogonal means at an angle of 90°.

[0025] In an advantageous design, the retaining fingers can be linear, and additionally or alternatively, the retaining claws can be curved. This allows for a robust arrangement. The use of a combination of retaining claws and retaining fingers is also possible (PC 25 0759 C 6 / 22, August 6, 2025).

[0026] Preferably, several retaining fingers or claws are formed. Preferably, the retaining fingers or claws are integrally connected to the front screen. The retaining fingers can be arranged along the flow direction or at right angles to the flow direction.

[0027] In an advantageous design, the sanitary insert can be provided with an additional drain structure. This allows for improved functionality of the sanitary insert. The drain structure is formed on a housing part.

[0028] An outlet structure refers to the design and shape of the area through which flowing water exits the sanitary fitting. Important aspects of the outlet structure are the flow direction and shape, pressure drop, flow resistance, distribution, uniformity, and resistance to contamination and clogging. The outlet structure preferably features honeycomb-shaped, particularly hexagonal, holes.

[0029] In an advantageous embodiment, the sealing element can provide a seal against a housing part, particularly the one already mentioned, and additionally or alternatively against the functional stage. Preferably, the functional stage is attached to the housing part and / or the housing part forms a mixing stage. This allows the sealing element to reliably perform its function.

[0030] The functional stage can be configured as a separation stage and additionally or alternatively as a reduction stage and additionally or alternatively as a mixing stage. The reduction stage can be configured as a throttle or as a flow regulator. PC 25 0759 C 7 / 22 6. August 2025

[0031] The separation stage can be designed as a diffusor or perforated plate. The diffusor can be multi-part, in particular two-part. For example, the diffusor can have a base body and an annular body, with an annular flow cross-section formed between the base body and the annular body.

[0032] In an advantageous design, the sealing element can have a rectangular or circular cross-section. Alternatively, the sealing element can have a square cross-section. This allows the sealing element to be adapted to the prevailing conditions, in particular the flow rate and operating pressure, and the mechanical design of the sanitary fitting.

[0033] In an advantageous embodiment, the housing component may have two interlocking sleeves connected by webs. The inner sleeve is cup-shaped, while the outer sleeve is cylindrical. Webs connect the two sleeves. Flow channels or ventilation channels are formed between the webs, allowing air to be drawn in and thus mixing with the flowing water. This further enhances the functionality of the housing component. The housing component has an outlet structure on the downstream side.

[0034] In an advantageous design, the circumferential and / or intermittent projection in the profile can be formed as a triangular edge. This allows the sealing element to be used in a fully assembled sanitary fitting.

[0035] The sealing element is preferably made of rubber or an elastomer, for example natural rubber or styrene-butadiene rubber. PC 25 0759 C 8 / 22 6. August 2025

[0036] In an advantageous embodiment, the retaining fingers or claws can be formed integrally with the pre-filter screen. Preferably, the retaining claws or fingers are arranged on the upstream side of the pre-filter screen. The retaining fingers can be oriented along the flow direction or perpendicular to the flow direction.

[0037] The pre-filter can have a downstream stub on which the pre-filter can be supported at the functional stage.

[0038] The function of the pre-filter is to filter out small particles such as limescale or dirt from the flowing water. For this purpose, the pre-filter has a mesh size that is smaller than the clear opening of a subsequent constriction, in particular a functional stage.

[0039] In an advantageous design, the sealing element can be provided to cover a joint between the functional stage and the housing part. This prevents water leakage through the joint. A joint is defined as a small gap between the parts (functional stage and housing part).

[0040] To solve the stated problem, the invention proposes the features of claim 14. In particular, according to the invention, it is proposed that, in a sanitary fitting of the type described above, the aforementioned problem be solved by the sanitary fitting having a sanitary insert with the features defined above. Thus, a sanitary fitting can be provided which ensures the complete functionality of the sanitary insert.

[0041] To solve the stated problem, the invention proposes the features of claim 15. In particular, according to the invention, when using a sanitary PC 25 0759 C 9 / 22 6. August 2025

[0042] For the insertion part of a sanitary fitting of the type described above, it is proposed to solve the aforementioned problem that the sealing element be attached to the mounted pre-filter before the sanitary insert is installed in the sanitary fitting, and additionally or alternatively, that the sealing element seal the sanitary fitting against the housing part and the functional stage. This allows for simplified installation.

[0043] The invention will now be described with reference to a few exemplary embodiments, but is not limited to these few embodiments. Further variants and exemplary embodiments of the invention result from combining the features of one or more claims with each other and / or with one or more features of the exemplary embodiments and / or the previously described variant of the devices and uses according to the invention.

[0044] It shows:

[0045] Fig. 1 shows a sanitary insert according to the invention in a perspective view and

[0046] Fig. 2 shows the sanitary insert from Fig. 1 in a top view and

[0047] Fig. 3 shows the sanitary insert from Fig. 1 in a side view and

[0048] Fig. 4 shows the sanitary insert from Fig. 1 in a view from below and

[0049] Fig. 5 shows a section through the sanitary insert from Fig. 1 in a side view and

[0050] Fig. 6 shows a section through the sanitary insert from Fig. 1 in a perspective view and PC 25 0759 C 10 / 22 6 . August 2025

[0051] Fig. 7 shows another inventive sanitary insert in a perspective view and

[0052] Fig. 8 shows the sanitary insert from Fig. 7 in a top view and

[0053] Fig. 9 shows the sanitary insert from Fig. 7 in a side view and

[0054] Fig. 10 shows the sanitary insert from Fig. 7 in a view from below and

[0055] Fig. 11 shows a section through the sanitary insert from Fig. 7 in a side view and

[0056] Fig. 12 shows a section through the sanitary insert from Fig. 7 in a perspective view and

[0057] Fig. 13 shows an illustration of the housing part in a perspective view and

[0058] Fig. 14 shows an illustration of the housing part in a top view and

[0059] Fig. 15 shows a sectional view through a sanitary fitting with a sanitary insert according to the invention and

[0060] Fig. 16 shows a sectional view through another variant of a sanitary fitting with a sanitary insert according to the invention.

[0061] In the following description of various embodiments of the invention, elements that are identical in function are given identical reference numbers even if their design or shape differs.

[0062] For clarity, not all reference symbols are shown in the figures, although the elements may well be present in the figures. However, the same reference symbol PC 25 0759 C 11 / 22 6 August 2025 designates functionally and / or structurally identical components and functional units.

[0063] Fig. 1 shows a perspective view of a sanitary insert 1 according to the invention. The sanitary insert 1 is suitable for use in a fitting outlet. The sanitary insert comprises a functional stage 2 (not shown here), a pre-filter 3, and a sealing element 4, wherein the pre-filter 3 is designed to provide a positive-locking retention for the sealing element 4 and wherein the sealing element 4 can be placed on the sanitary insert 1 in an assembled position. The mesh size of the pre-filter 3 is smaller than the clear opening of a subsequent constriction (for example, the clear opening of a separating nozzle or the clear opening of a control gap in a reducing stage, in particular a flow regulator). Thus, the pre-filter can efficiently and reliably filter the water flow and thereby remove dirt particles or limescale particles.The positive locking mechanism is enabled by an intermittent projection 5 on the front screen 3. In this specific embodiment, the intermittent projection 5 is designed as retaining claws 6. Alternatively, the intermittent projection 5 can be designed as a retaining finger (not shown here). Alternatively, the positive locking mechanism can be enabled by a circumferential groove. The front screen 3 fixes or holds the sealing element 4 radially and additionally or alternatively axially. The axial direction refers to the direction of water flow. The radial direction refers to the direction that is orthogonal to the flow direction. The retaining claws 6 are curved and resist removal to a greater extent than retaining fingers. The sanitary insert 1 also has an outlet structure 7 (see Fig. 4 or Fig. 6), which is formed on a housing part 8.The sealing element 4 enables a seal PC 25 0759 C 12 / 22 August 6, 2025 against the housing part 8 and additionally or alternatively against the functional stage 2 (Fig. 5, Fig. 6). Preferably, the functional stage 2 is attached to the housing part 8. Preferably, the housing part 8 is designed as a mixing stage 9 (Fig. 5, Fig. 6). The intermittent projection 5, which is designed as retaining claws 6, has a triangular edge 13 in profile. The retaining claws 6 are formed integrally with the front screen 3. The housing part 8 has a thread 17, which is designed as an external thread, and with the aid of which the sanitary insert 1 can be screwed into a sanitary fitting 15 (not shown here). The thread 17 is not fully circumferential, but intermittent. A ventilation channel 16 is formed between the threaded parts, the function of which is to draw in air from outside the sanitary insert part 1.In the sanitary inlet section 1, a mixing stage 9 (not shown here) is provided in which the air drawn in from the outside and the flowing water are mixed. This is particularly advantageous for producing an attractive spray pattern and for economical, especially water-saving, use of water.

[0064] Functional stage 2 can be configured as disassembler stage 18 or as a reduction stage (not shown here).

[0065] Fig. 2 shows the sanitary insert 1 from Fig. 1 in a top view. The intermittent projection 5, which is designed as retaining claws 6, is visible. The retaining claws 6 fix and hold the sealing element 4 in the axial and radial directions. The sealing element 4 can be placed on the sanitary insert 1 in a mounted position. The retaining claws 6 have triangular edges 13 (Fig. 3, Fig. 5) over which the sealing element 4 can be placed. The ventilation channels 16, which connect to the thread 17, are also visible (Fig. PC 25 0759 C 13 / 22 6 August 2025).

[0066] 1) interrupt.

[0067] Fig. 3 shows the sanitary insert 1 from Fig. 1 in a side view. The retaining claws 6 are curved and prevent the sealing element 4 from slipping in the radial and axial direction during flow. Fig. 3 also shows the ventilation channel 16, which interrupts the thread 17. An opening is formed in the upper part of the ventilation channel 16, leading into the interior of the sanitary insert 1, in particular into the mixing stage 9 (not shown here).

[0068] Fig. 4 shows the sanitary insert 1 in a bottom view. A drain structure 7 is visible through which the water exits the sanitary insert 1. The drain structure 7 is part of the housing section 8. The two ventilation channels 16 are also visible. Inside, the functional stage 2 is visible, which in this embodiment is designed as a disassembly stage 18.

[0069] Fig. 5 shows a section through the sanitary insert 1 from Fig. 1 in a side view. The front screen 3 has a butt 19 against which it rests on the functional stage 2, which is designed as a separating stage 18. The sealing element 4 has a rectangular cross-section 10. The sealing element 4 covers a joint 14 between the functional stage 2 and the housing part 8. The retaining claws 6 are integrally formed with the front screen 3 and are arranged on the inflow side. A mixing stage 9 is formed in a central part of the sanitary insert 1, in which the flowing water is mixed with the aspirated air. The air is drawn in through the ventilation channels 16 (Fig. 3).

[0070] Fig. 6 shows a section through the sanitary insert 1 from Fig. 1 in a perspective view.

[0071] The running structure 7 is designed as part of the housing 8. PC 25 0759 C 14 / 22 6 August 2025

[0072] Functional stage 2 is designed as disassembly stage 18.

[0073] Housing 8 also has a thread 17, with which it can be screwed into a sanitary fitting.

[0074] Fig. 7 shows another sanitary insert 1 according to the invention in a perspective view. The difference to the previous sanitary insert 1 (Fig. 1) is that the projection 5 is formed circumferentially. The circumferential projection 5 is formed on the front screen 3 and prevents axial and radial slippage of the sealing element 4 in the flowing water. The projection enables a force-fit hold of the sealing element 4. The sealing element 4 can be installed in an assembled position of the sanitary insert 1. The mesh size of the front screen 3 is smaller than the clear opening of a subsequent constriction, in particular the functional stage 2. The circumferential projection 5 is formed as a triangular edge 13 and therefore allows the sealing element 4 to be installed in the assembled position of the sanitary insert 1. A further housing part 8a is visible, which has a thread 17.Additionally, a tool engagement surface 20 is provided, against which pliers or a similar device can be placed, enabling the sanitary insert 1 to be screwed into a sanitary fitting 15 (Fig. 15).

[0075] Fig. 8 shows the sanitary insert 1 from Fig. 7 in a top view. The circumferential projection 5 is visible, as is the circumferential sealing element 4. The further housing part 8a is visible at the outer edge.

[0076] Fig. 9 shows the sanitary insert 1 from Fig. 7 in a side view. The thread 17 and the tool engagement surface 20 are visible. The front screen 3 has a dome-like structure.

[0077] Fig. 10 shows the sanitary insert 1 from Fig. 7 in a PC 25 0759 C 15 / 22 6 August 2025

[0078] View from below. The outlet structure 7, which is part of the housing section 8, is visible. The housing section 8 has two interlocking sleeves 11 connected by webs 12. Ventilation channels 16 are formed between the two sleeves 11 and the webs 12, allowing air to be drawn in. The air is drawn into the interior of the sanitary insert 1, where it is mixed with the flowing water in a mixing stage 9, which is also part of the housing section 8.

[0079] Fig. 11 shows a section through the sanitary insert 1 from Fig. 7 in a side view. The sealing element 4 has a rectangular cross-section 10. Alternatively, the sealing element 4 can have a circular cross-section 10. The positive locking of the sealing element 4 is achieved by the circumferential projection 5. The front screen 3 fixes and holds the sealing element 4 radially and additionally or alternatively axially. The outlet structure 7 is formed on the housing part 8. The housing part 8 is inserted into the further housing part 8a. The further housing part 8a has a thread 17 with which it can be screwed into a sanitary fitting 15 (Fig. 15). The sealing element 4 represents a

[0080] Sealing against housing part 8 and against functional stage 2 is provided. Functional stage 2 is attached to housing part 8 and is designed, for example, as a flow regulator. Downstream of the flow regulator, a two-part diffuser 21 is formed, which has a base body 22 and an annular body 23. An annular flow cross-section is formed between the base body 22 and the annular body 23, from which the flowing water from the diffuser 21 exits. Housing part 8 additionally forms a mixing stage 9 into which the water from the diffuser 21 flows. As already mentioned above, housing part 8 has two interlocking sleeves 11, which are connected to each other by webs 12 (Fig. 13, Fig. 14).

[0081] Fig. 12 shows a cross-section through the sanitary insert 1 from Fig. 7 in a perspective view. The circumferential projection 5 is designed as a triangular edge 13 and allows the sealing element 4 to be placed over it when the sanitary insert 1 is installed. Ventilation channels 16 are formed between the outlet structure 7 and the further housing part 8a, which allow air to be drawn in. The sealing element 4 covers a joint 14 between the functional stage 2 and the housing part 8. The joint 14 is referred to here as a small gap. The pre-filter screen 3 has a butt 19 against which it rests against the functional stage 2.

[0082] Fig. 13 shows a perspective view of the housing part 8. The housing part 8 has two interlocking sleeves 11, which are connected to each other by webs 12. A discharge structure 7 is formed on the outflow side. Ventilation channels 16 are formed between the interlocking sleeves 11 and between the webs 12, which allow air to be drawn in. A mixing stage 9 is formed inside the housing part 8, in which the flowing water and the air mix. This is advantageous for the spray pattern and for the economical, and in particular water-saving, use of water.

[0083] Fig. 14 shows a top view of the housing part 8. The webs 12 and the ventilation channels 16 are visible. The outlet structure 7 has honeycomb-shaped, in particular hexagonal, holes.

[0084] Fig. 15 shows a sectional view through a sanitary fitting 15 with a sanitary insert 1 according to the invention. The elements have already been described above, so a duplication of the description is omitted here (PC 25 0759 C 17 / 22, August 6, 2025). Reference is hereby made to the above description.

[0085] The direction of flow is represented by the arrow Pfl.

[0086] Fig. 16 shows a sectional view through another variant of a sanitary fitting 15 with a sanitary insert 1 according to the invention. The variant shown in Fig. 16 differs from the variant shown in Fig. 15 in the design of the two-part diffuser 21. The ring body 23 of the diffuser shown in Fig. 16 has an annular rim in which a shoulder of the base body 22 rests on the inside.

[0087] It is proposed that a sanitary insert 1 for use in a fitting outlet comprises a functional stage 2, a pre-screen 3 and a sealing element 4, wherein the pre-screen 3 is designed to provide a positive locking hold for the sealing element 4 and wherein the sealing element 4 can be placed on top in an assembled assembly position of the sanitary insert 1.

[0088] / Reference numeral list

[0089] PC 25 0759 C 18 / 22 August 6, 2025

[0090] Reference symbol list

[0091] 1 sanitary insert

[0092] 2 functional level

[0093] 3 front sieve

[0094] 4 Sealing element

[0095] 5 lead

[0096] 6 retaining claws, retaining claws

[0097] 7. Outlet structure

[0098] 8 Housing part

[0099] 8a further housing part

[0100] 9 mixing stage

[0101] 10 Cross section

[0102] 11 Sleeves, Sleeves

[0103] 12 bridges

[0104] 13 (triangular) edge

[0105] 14 Joint

[0106] 15 Sanitary fittings

[0107] 16 ventilation duct, ventilation ducts

[0108] 17 threads

[0109] 18 Disassembly stage

[0110] 19 stump

[0111] 20 tool attack area

[0112] 21 Diffuser

[0113] 22 Basic shapes

[0114] 23 ring bodies

[0115] Plant flow direction

[0116] / Claims

Claims

PC 25 0759 C 19 / 22 August 6, 2025 Claims 1. Sanitary insert (1) for use in a fitting outlet, wherein the sanitary insert (1) comprises a functional stage (2), a pre-screen (3) and a sealing element (4), characterized in that the pre-screen (3) is designed to provide a positive locking hold for the sealing element (4) and that it is possible to place the sealing element (4) in an assembled assembly position of the sanitary insert (1).

2. Sanitary insert (1) according to the preamble of claim 1 or according to claim 1, characterized in that a mesh size of the pre-screen (3) is smaller than a clear width of a subsequent constriction.

3. Sanitary insert (1) according to claim 1, characterized in that the positive locking holding is enabled by a circumferential projection (5) on the front screen (3) or by an intermittent projection (5) on the front screen (3) or by a circumferential groove.

4. Sanitary insert (1) according to one of the preceding claims, characterized in that the intermittent projection (5) is designed as a retaining finger or retaining claws (6).

5. Sanitary insert (1) according to one of the preceding claims, characterized in that the front screen (3) fixes or holds the sealing element (4) in a radial and / or axial direction.

6. Sanitary insert (1) according to one of the preceding claims, characterized in that the retaining fingers are linear and / or that the retaining claws (6) are curved.

7. Sanitary insert (1) according to one of the preceding PC 25 0759 C 20 / 22 August 6, 2025 Claims, characterized in that the sanitary insert part (1) additionally has a drain structure (7) which is formed on a housing part (8).

8. Sanitary insert (1) according to one of the preceding claims, characterized in that the sealing element (4) a seal against or the housing part (8) , in particular to which the functional stage (2) is attached and / or which forms a mixing stage (9), and / or against the functional stage (2).

9. Sanitary insert (1) according to one of the preceding claims, characterized in that the sealing element (4) has a rectangular or circular cross-section (10) .

10. Sanitary insert (1) according to one of the preceding claims, characterized in that the housing part (8) has two interlocking sleeves (11) which are connected to each other by webs (12).

11. Sanitary insert (1) according to one of the preceding claims, characterized in that the circumferential and / or intermittent projection (5) in the profile is formed as a triangular edge (13).

12. Sanitary insert (1) according to one of the preceding claims, characterized in that the retaining fingers or retaining claws (6) are formed integrally with the front sieve (3).

13. Sanitary insert (1) according to one of the preceding claims, characterized in that the sealing element (4) covers a joint (14) between the functional stage (2) and the housing part (8).

14. Sanitary fitting (15) with a sanitary insert (1) according to claims 1 to 13. PC 25 0759 C 21 / 22 August 6, 2025 15. Use of a sanitary insert (1) according to claims 1 to 13 on a sanitary fitting (15), wherein the sealing element (14) is attached to the mounted pre-screen (3) before the sanitary insert (1) is mounted in the sanitary fitting (15) and / or wherein the The sealing element (4) seals the sanitary fitting (15) against the housing part (8) and the functional stage (2). / Summary

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