Valve top for sanitary fittings

Description

[0001] The invention relates to a valve upper part with a head piece which is axially penetrated by a control spindle, via which a valve body arranged in the head piece can be actuated and which is connected to an operating part comprising a handle, wherein the handle is displaceable relative to the head piece coaxially to the control spindle.

[0002] Valve bonnets are used to control the outlet of media from fittings. For this purpose, the valve bonnet is screwed into the fitting body by means of its head piece. Valve bonnets of the aforementioned type are known in a wide variety of designs. For example, EP 3 062 002 A1 discloses a valve bonnet which has a head piece through which a spindle passes. The spindle is positively connected in the head piece to a control disc which rests against a stationary inlet disc. The water flow is controlled by rotating the control disc relative to the inlet disc. To operate the spindle, the end face protruding from the head piece has an external polygon and is provided with a threaded blind hole on the inside for the positive attachment of a rotary handle.

[0003] EP 2 522 887 A1 also discloses a valve upper part in which a valve body is provided to control the flow of a fluid, which valve body is linearly movable within the head piece via a spindle. A spindle is rotatably mounted in a head piece and connected via a thread to a valve body guided axially within the head piece in a rotationally secure manner. Rotation of the spindle thus causes an axial movement of the valve body within the head piece. Further embodiments of valve upper parts are described in DE 10 2012 221043 A1, JP 2019 066007 A, US 2009 / 146090 A1, and EP 3 366 058 A1.

[0004] In faucets, operation of the valve head via pushbuttons or buttons is increasingly desired. Electromagnetically operated valves are often used for this purpose. However, the disadvantage of these valve heads is that the electromagnetic contacts can be damaged when screwing or gluing the valve head, thereby impairing reliability. Furthermore, such valves require an additional power source. Furthermore, these valves generally do not allow for flow control.

[0005] To overcome these disadvantages, EP 3 366 959 A1 proposes a valve upper part in which the handle has a control cap, with which it can be displaced along the head piece and via which a control piston can be actuated. A cam track with two locking positions is incorporated into the outer surface of the head piece, into which a guide pin arranged on the control cap engages. By pressing the handle with the control cap, a guided axial movement of the control piston is achieved, which can be locked in at least two positions, for example, the "valve open" and "valve closed" positions.

[0006] When designing valves, a specific axial positioning of the operating part of a valve with a spindle, especially a push valve, is often desired, for example, to be flush with the surrounding flat surface. However, such designs prove difficult in practice. When assembling such a valve bonnet, an extra-long control spindle is usually used, which is cut to the desired length after installation. For this purpose, the control spindle usually has an arrangement of evenly spaced notches. Inaccuracies during the installation of the valve bonnet and when cutting the control spindle to length often lead to deviations in the axial position of the operating part after it has been installed, which impairs the overall visual impression of the valve. Such incorrect positioning is often very difficult to correct.

[0007] This is where the present invention comes in. The invention is based on the object of providing a valve head for sanitary fittings in which the axial positioning of an operating element connected to its control spindle is simplified. According to the invention, this object is achieved by a valve head having the features of patent claim 1.

[0008] The invention provides a valve head for sanitary fittings in which the axial positioning of an operating part connected to the control spindle is simplified. Because the handle is connected to the control spindle via an adapter piece fastened thereto in a rotationally fixed manner, wherein the adapter piece has an internal thread which engages with an external thread of the control spindle or a component connected to the control spindle and via which its axial position relative to the control spindle can be changed by rotation, a fine adjustment of the axial position of the handle on the spindle of a valve head installed in a wall is possible. By rotating the handle in an adjustment position, a longitudinal adjustment of the adapter piece along the external thread of the control spindle or a component connected to the control spindle takes place.Inaccuracies during the installation of a valve upper part and the required cutting of the control spindle can be compensated for by adjusting the adapter piece.

[0009] According to the invention, the handle of the operating unit has an adjusting sleeve in which the adapter piece is arranged and connected in a rotationally fixed manner. The adapter piece is held in the adjusting sleeve of the handle in a rotationally fixed manner and is longitudinally movable.

[0010] In a further development of the invention, the internal thread of the adapter piece engages with an external thread arranged on a control cylinder, which receives a control piston that is connected to the control spindle.

[0011] In an embodiment of the invention, the handle can be secured in at least two axial positions via a locking device. The locking device is preferably arranged in the operating part and comprises the control piston, which is guided axially displaceably in the control cylinder. The control cylinder has a control slot into which an engagement part arranged on the control cylinder engages. The locking device thus acts between the control piston and the control cylinder arranged in the adjusting sleeve.

[0012] In an embodiment of the invention, the engagement part is formed by a ball that is guided radially and circumferentially in the control cylinder. This prevents rotation of the handle during actuation, which is induced by the balls. Compared to the guide pins known in the prior art, the balls also have the advantage of preventing occasional malfunctions caused by guide pins or their guides becoming deformed due to excessive load.

[0013] In a further embodiment of the invention, the handle of the operating part has an adjusting sleeve in which the adapter piece is arranged and connected to it in a rotationally fixed manner and which preferably surrounds the control piston at least in part. As a result, the handle is guided along the control piston, with the locking device acting between the control piston and the control cylinder arranged in the adjusting sleeve. For the radially and circumferentially movable arrangement of a ball which engages in the control link of the control piston, this ball can be arranged in a cage arranged on the control cylinder. Preferably, the control piston has a non-circular outer cross-section and the control cylinder has an inner cross-section corresponding to this outer cross-section, whereby the control piston is guided in the control cylinder in a rotationally fixed but displaceable manner.

[0014] In a further development of the invention, a spring is arranged between the control cylinder and the control piston, which is preloaded against the control cylinder. This causes the control cylinder connected to the handle to automatically return along the control piston after an actuating force is applied.

[0015] In an embodiment of the invention, the adapter piece is held in the adjusting sleeve of the handle in a rotationally fixed and longitudinally displaceable manner. Preferably, the adjusting sleeve has internal teeth that engage with external teeth arranged on the control piston, allowing the handle to be guided axially along the control piston. This achieves a rotationally fixed connection between the adjusting sleeve and the control piston while simultaneously allowing axial displacement.

[0016] According to the invention, the adapter piece has locking lugs, with at least one locking groove arranged inside the adjusting sleeve, with which the locking lugs can be locked in a defined position of the adapter piece. This enables a defined axial positioning of the adapter piece in the adjusting sleeve, in which its internal toothing does not engage the external toothing of the control piston (adjustment position).

[0017] Preferably, at least two locking grooves are arranged axially spaced from one another, preferably radially, inside the adjusting sleeve. This enables a first axial positioning of the adapter piece for adjustment and a second defined positioning of the adapter piece in the operating position with engagement of its internal toothing with the external toothing of the control piston.

[0018] In a further development of the invention, the control spindle has a non-circular connecting section, wherein a receptacle for positively connecting this non-circular connecting section is arranged on the control piston, which is preferably detachably connected to the control spindle. Alternatively, the receptacle and the connecting section can also be cylindrical and glued to one another or connected via other connecting means. This enables a transmission of torque from the handle to the control piston and the control spindle connected to it. By pressing on the handle, it can be moved out of a countersunk position via the locking device, after which the valve upper part can be actuated by turning the handle.

[0019] In an embodiment in which both the adjusting device formed by the adapter piece and the locking device are arranged in the operating part, the control piston of which can be detachably connected to the control spindle, a simple replacement of the operating device and a simple retrofitting of a valve upper part with such an operating device is possible.

[0020] The only requirement is that the valve head in question has a spindle, the rotation of which actuates a valve body.

[0021] In a further embodiment of the invention, an installation sleeve is provided whose inner diameter substantially corresponds to the outer diameter of the handle of the operating element, wherein the position of the handle can be adjusted within a defined distance from the installation sleeve. Preferably, the installation sleeve has a circumferential collar which, when the handle is positioned in a defined position in the installation sleeve, forms a common plane with the surface of the handle. This enables a visually appealing integration of the handle into a surrounding plane. The collar can be either annular or in the form of a plate of any geometric shape. The present invention further relates to a sanitary fitting with a valve head for sanitary fittings according to one of claims 1 to 10.

[0022] In this case, the adjustment position refers to the position of the handle in which the locking lugs of the adapter engage with the second, lower locking groove of the adjusting sleeve. In this position, adjustment is possible via the threaded engagement between the external thread of the control cylinder and the internal thread of the adapter. The internal toothing of the adjusting sleeve is disengaged from the external toothing of the control piston.

[0023] In this case, the operating position refers to the position of the handle in which the locking lugs of the adapter engage the first, upper locking groove of the adjusting sleeve. In this position, the internal teeth of the adjusting sleeve engage with the external teeth of the control piston. Adjustment via the thread engagement between the external thread of the control cylinder and the internal thread of the adapter is not possible.

[0024] In this case, the operating position refers to the position of the handle in which the balls rest in the upper position of the control gate. The handle is thus "extended" for easy operation.

[0025] In this case, the retracted position refers to the position of the handle in which the balls rest in the holding area of ​​the control link. Here, the handle is locked in a retracted position in which, for example, the handle is flush with the surrounding area.

[0026] Further developments and refinements of the invention are specified in the remaining subclaims. Exemplary embodiments are illustrated in the drawings and described in detail below. They show: Figure 1: the schematic representation of a valve upper part with an operating device after a rough assembly with handle in operating position; Figure 2: the schematic representation of the valve upper part with operating device after Figure 1 with handle in adjustment position (before adjustment); Figure 3: the schematic representation of the valve upper part with operating device according to Figure 2 after adjustment of the handle; Figure 4: the schematic representation of the valve upper part with operating device after Figure 3 with handle in operating position; Figure 5: the representation of the valve upper part with operating device from Figure 4 with handle in retracted position; Figure 6: the schematic representation of the adjusting sleeve of the handle of the operating device from Figure 1 a) in partial section, b) in plan view; Figure 7: the schematic representation of the adapter piece of the operating device from Figure 1a) in partial section, b) in plan view; Figure 8: the schematic representation of the control cylinder of the operating device from Figure 1 a) in partial section, b) in plan view; Figure 9: the schematic representation of the limiting sleeve of the control cylinder of the operating device from Figure 1 a) in partial section, b) in plan view; Figure 10: the schematic representation of the control piston of the operating device from Figure 1 a) in side view; b) in longitudinal section; c) in plan view; Figure 11: the schematic representation of the driver piece of the control piston of the operating device from Figure 1 a) partial section, b) top view. Figure 12: schematic representation of the operating device (without handle) from Figure 3 in operating position Figure 13: the detailed view of the ball cage of the operating device from Figure 12 ; Figure 14: the representation of the operating device from Figure 12with increased tensile load on the control cylinder; Figure 15: the detailed view of the ball cage of the operating device from Figure 14 ; Figure 16: the schematic representation of a valve upper part in a further embodiment with operating device in adjustment position and Figure 17: the schematic representation of the valve upper part with operating device according to Figure 16 after adjusting the handle in the operating position.

[0027] The example shown in accordance with Figure 1The selected valve upper part 8 is designed according to EP 1 696 162 A1 and has a head piece 83 through which a control spindle 81 axially passes, by means of which a valve body (not shown) can be actuated. An operating device is arranged on the end of the control spindle 81, which comprises a handle 1, in which an adapter piece 2 is arranged so as to be axially displaceable, which receives a control cylinder 3 with which it is in threaded engagement, which is provided at the end with a limiting sleeve 4, and in which a control piston 5 is arranged so as to be axially displaceable, which is provided at the end with a driver piece 6 and which has a receptacle for a positive connection to the non-circular connecting section 82 of the control spindle 81 of a valve upper part 8. Alternatively, the connecting section of the control spindle 81 can also be cylindrical. In this case, a rotationally fixed connection, for example by means of gluing, is required.

[0028] The handle 1 is formed from a hollow cylindrical, pot-shaped grip 11, which has a central threaded bore 12 inside, into which an adjusting sleeve 14 is screwed and glued coaxially to the cylindrical side wall of the grip 11. Alternatively, the handle 1 can also be constructed in one piece. On the outside, the grip 11 is provided with a sealing groove 13 that accommodates an O-ring 131. In the illustrated embodiment, the grip 11 and adjusting sleeve 12 are manufactured as turned brass parts.

[0029] The adjusting sleeve 14 is essentially hollow-cylindrical and has a first section 141, which is followed by a second, larger-diameter section 143. The first section 141 is provided on the outside with an external thread 15, with which the adjusting sleeve 14 is screwed and glued into the threaded bore 12 of the handle 11. In its inner surface, which has a largely dodecagonal cross-section, a first, upper locking groove 16 and, spaced apart from this, a second, lower locking groove 17 are arranged in the first section 141. The largely dodecagonal cross-sectional contour of the inner surface of the first section 141 serves to non-rotatably receive the adapter piece 2, the outer surface of which has a corresponding dodecagonal cross-sectional contour.The largely dodecagonal cross-sectional contour of the inner surface of the first section 141 and the outer surface of the adapter piece 2 is achieved by six rectangular flattenings 142, 21 introduced into the cylinder surface at regular intervals.

[0030] Alternatively, any other non-circular, preferably polygonal, contour can be used instead of the dodecagonal cross-sectional contour. The second section 143 is provided with an internal toothing 18 that extends largely over the entire inner surface of the second section 143. The inner surface of the second section 143 has a largely octagonal cross-sectional contour, which is achieved by four rectangular flattened portions 144 spaced at regular intervals in the cylinder inner surface provided with the internal toothing 18.

[0031] The adapter piece 2 is essentially hollow-cylindrical and, as already explained, has an outer surface corresponding to the inner surface of the adjusting sleeve 14 and having a nearly dodecagonal cross-section. In the area of ​​each flattened portion 21, a rectangular recess is formed in the adapter piece 2 on its side facing the threaded bore 12 of the handle 11, defining six circumferentially spaced locking tongues 22 which have radially extending, outwardly projecting locking lugs 23 for engagement in the locking grooves 16, 17 of the adjusting sleeve 14. On its inner surface, the adapter piece 2 is provided with an internal thread 24. In the exemplary embodiment, the adapter piece 2 is made of plastic.

[0032] The control cylinder 3 is designed as an essentially hollow cylindrical turned brass part. On its end facing the adapter piece 2, the control cylinder 3 has a shoulder 31 with an inner diameter tapering into which a step 32 is introduced on the inside. On the outside, the control cylinder 3 has an external thread 33 that extends approximately over half its length. A groove 34 for receiving an O-ring 341 is arranged at a distance from the external thread 33. Adjacent to the groove 34 are two diametrically opposed, radially extending elongated holes 35, which are enclosed by two axially spaced, circumferential webs 36. Between the elongated holes 35 and the external thread 33, the control cylinder 3 has an inner diameter-tapering shoulder 37, into which four guide notches 371 are arranged at radially spaced intervals. The guide notches 371 serve to non-rotatably guide the control piston 4.

[0033] A ball 38 is inserted into each of the two elongated holes 35, the diameter of which is slightly smaller than the width of the elongated hole 35, so that the ball projects partially through the respective elongated hole 35 and is guided radially and circumferentially between the webs 36. At the end section of the control cylinder 3 having the elongated holes 35, there is a limiting sleeve 4 in which an annular spring 9 is arranged. The limiting sleeve 4 engages around the webs 36 and is held in place by an O-ring 341. The limiting sleeve 4, together with the webs 36, the annular spring 9 and the elongated holes 35, forms a ball cage for the two balls 38, by which their movement in the radial direction is limited.

[0034] The control piston 5 is designed as a substantially cylindrical turned brass part. Four flattened portions 51 are radially spaced from one another in its cylindrical outer surface, forming a substantially octagonal cross-section. The control piston 5 is guided in the guide notches 371 of the control cylinder 3 via the corners thus formed. Furthermore, two control guides 52 are diametrically opposed to each other in the outer surface between each flattened portion 51. At its end facing away from the control cylinder 3, a reduced-diameter shoulder 53 is arranged, which has an external thread 531. Extending through the shoulder 53 is a receptacle 54, shaped like an internal polygon, for the control spindle 81, which has an external polygon, of a valve upper part 8.Adjacent to the receptacle 54 is a section 55 with a tapered inner diameter, into which a conical bore 56 is centrally formed for receiving the head of a countersunk head screw 82. Adjacent to the section 55 with a tapered inner diameter is a section 58 with an enlarged inner diameter, through which a shoulder 57 is formed, which serves as a spring seat for a compression spring 59.

[0035] The driver piece 6 is designed as a substantially hollow-cylindrical brass turned part and has, at its end opposite the control cylinder 3, a section 61 with a tapered inner diameter, which is provided with an internal thread 62. The outer surface of the driver piece 6 is provided with an external toothing 63 for engagement with the internal toothing 18 of the adjusting sleeve 14.

[0036] The adapter piece 2 is screwed with its internal thread 24 onto the external thread 33 of the control cylinder 3. The control piston 5 is inserted into the control cylinder 3 and is guided in the control cylinder 3 in a rotationally fixed but axially displaceable manner by its non-circular outer surface, which corresponds to the inner surface of the control cylinder 3. The balls 38, which partially pass through the elongated holes 35 of the control cylinder 3, each engage in a control guide 52 of the control piston 5. The compression spring 59 rests against the shoulder 57 of the control piston 5 and is preloaded on its opposite side against the adjusting sleeve.

[0037] In the operating position of the handle 1 with its adjusting sleeve 14, in which the locking lugs 23 of the locking tongues 22 of the adapter piece 2 screwed onto it engage in the upper, first locking groove 16 of the adjusting sleeve 14, the internal toothing of the adjusting sleeve 14 engages with the external toothing 63 of the driver piece 6. In this operating position, a transmission of torque from the handle 1 to the driver piece 6 connected to the control spindle 81 of the valve upper part 8 is possible. The valve upper part 8 is designed in the exemplary embodiment according to EP 1 696 162 A1. It has a head piece 83 through which the control spindle 81 passes axially.

[0038] When installing a sanitary fitting, such as a shower fitting, on the wall, the plumber connects the water pipes to a valve head 8 of the fitting. The valve head 8 usually has a long control spindle 81, which is cut to the desired length after completion of the wall-mounted work, including any tiling. Framing the control spindle 81, the wall opening is provided with an installation sleeve 7. The control spindle 81 is inserted with its external toothing into the internally toothed receptacle 54 of the control piston 5 and secured with a countersunk screw 82. Such an installation situation is Figure 1shown schematically. Due to inaccuracies during installation of the valve upper part 8 and the cutting of the control spindle 81, the handle 11 of the handle 1 protrudes significantly beyond the collar 71 of the installation sleeve 7, which in this embodiment has an external thread 72 that is screwed with a lock nut 73.

[0039] The handle 1, with its adjusting sleeve 14 connected longitudinally to the adapter piece 2, can now be moved by pulling on the handle 11 on the adapter piece 2 until the locking lugs 23 of the locking tongues 22 engage in the second, lower locking groove 17 of the adjusting sleeve 14. In this position, the internal toothing 18 of the adjusting sleeve 14 is disengaged from the external toothing 63 of the driver piece 6 (cf. Figure 2). By turning the handle 11, the adapter piece 2, which is connected to the adjusting sleeve 14 in a rotationally fixed manner, can now be adjusted axially relative to the control cylinder 3 via the threaded engagement with the external thread 33 of the control cylinder 3 (cf. Figure 3 ).

[0040] When moving the handle 1 with its adjusting sleeve 14 from the operating position to the adjustment position, a tensile force is required to move the locking lugs 23 of the locking tongues 22 out of the first, upper locking groove 16 in order to move the locking lugs 23 into the second, lower locking groove 17. This tensile force simultaneously generates a tensile force between the control cylinder 3 and the control piston, whereby the balls 38 guided in the control link 52 of the control piston 5 are pressed radially outwards against the annular spring 9. The limiting sleeve 4 prevents the balls 38 from escaping from the control link 52 (cf. Figures 13 and 15 ).

[0041] Subsequently, the adjusting sleeve 14 can be moved again along the adapter piece 2 by pressing on the handle 11 until the locking lugs 23 of the locking tongues 22 engage in the first, upper locking groove 16 of the adjusting sleeve 14. The control unit is now adjusted relative to the installation sleeve 7. It is in the operating position (see Figure 4 ).

[0042] By pressing the handle 1, the control cylinder 3 is moved via the adjusting sleeve 14 along the control piston 5, with the balls 38 running in the control link 52. The balls 38 can move radially in the elongated holes 35. At the stop of the control piston 5 in the control cylinder 3, the balls 38 reach the switching section 521 of the respective control cam 52. After the handle 1 is released, the control cylinder 3 is moved back by the restoring force of the compression spring 59, whereby the balls 38 are moved into the holding area 522 of the control link 52. In this position, the handle 1 is held by the balls 38. In this position, the handle 1 is completely sunk into the installation sleeve 7 in the retracted position, with the surfaces of the handle 1 and the collar 71 of the installation sleeve 7 lying on the same level.

[0043] When handle 1 is pressed again, balls 38 are moved out of the holding area 522 of control gate 52. After handle 1 is released, control cylinder 3 is now moved completely back by the restoring force of compression spring 59. In this operating position, the handle protrudes far out of installation sleeve 7. Due to the engagement of the internal toothing 18 of adjusting sleeve 14 with the external toothing 63 of driver piece 6, which is connected to control spindle 81 of valve upper section 8 via control piston 5, valve upper section 8 can now be actuated by rotating control spindle 81 via handle 1. After valve upper section 8 has been actuated, it can be lowered back into the installation sleeve by pressing handle 1 again.

[0044] In Figure 16A valve upper part is shown in a further embodiment in which no locking device is present. An operating device is arranged at the end of the control spindle 81, which in turn comprises a handle 1 having a grip piece 11 and an adjusting sleeve 14 connected to it, and in which an adapter piece 2 is arranged so as to be axially displaceable in the manner described above. However, the adapter piece here accommodates a coupling cylinder 41, with the adapter piece 2 being screwed with its internal thread 24 onto the external thread 42 of the coupling cylinder 41.

[0045] The coupling cylinder 41 has a receptacle 43 for positive connection with the non-circular connecting section 82 of the control spindle 81 of the valve upper part 8. At its end facing the valve upper part 8, the coupling cylinder 41 has a driver shoulder 44 of enlarged diameter, which is provided on the outside circumferentially - corresponding to the external toothing 63 of the driver piece 6 of the previously described embodiment - with an external toothing 45 for engagement with the internal toothing 18 of the adjusting sleeve 14 of the handle 1.

[0046] The handle can now be moved according to the first embodiment by pulling on the handle 11 on the adapter piece 2 until the locking lugs 23 of the locking tongues 22 engage in the second, lower locking groove 17 of the adjusting sleeve 14. In this position, the internal toothing 18 of the adjusting sleeve 14 is disengaged from the external toothing 45 of the driver shoulder 44 (see. Figure 16). By turning the handle 11, the adapter piece 2, which is connected to the adjusting sleeve 14 in a rotationally fixed manner, can now be adjusted axially relative to the coupling cylinder 1 via the threaded engagement with the external thread 42 of the latter.

[0047] Subsequently, the adjusting sleeve 14 can be moved again along the adapter piece 2 by pressing on the handle 11 until the locking lugs 23 of the locking tongues 22 engage in the first, upper locking groove 16 of the adjusting sleeve 14. The operating unit is now adjusted relative to the installation sleeve 7. The external toothing 45 of the driver shoulder 44 is now again in engagement with the internal toothing 18 of the adjusting sleeve 14, and the threaded engagement between the adapter piece 2 and the adjusting sleeve 14 is blocked. A torque can be transmitted to the control spindle 81 via the handle 1. The operating device is in the operating position (see Figure 17 ).

[0048] Of course, the threaded engagement between the adapter piece 2 and the adjusting sleeve 14 can also be blocked via locking means arranged in the handle, for example, via an axial displacement of the adjusting sleeve, whereby the threads of the adapter piece and the adjusting sleeve can be disengaged. For this purpose, the adapter piece is preferably made of plastic, which allows axial overrun of the thread of the adjusting sleeve. Alternatively, the provision of a locking pin that can be pressed in from the outside and engages a thread is also conceivable.

Claims

1. Valve upper part having a head piece, which is axially penetrated by a control spindle (81), via which a valve body arranged in the head piece (83) can be actuated and which is connected to an operating part comprising a handle (1), wherein the handle (1) is displaceable relative to the head piece (83) coaxially to the control spindle (81), wherein the handle (1) is connected to the control spindle (81) via an adapter piece (2) fastened to it in a rotationally fixed manner, wherein the adapter piece (2) has an internal thread (24), which is in engagement with an external thread of the control spindle or a component connected to the control spindle (81) and via which its axial relative position with respect to the control spindle (81) is variable by rotation, characterised in that the handle (1) of the operating part has an adjusting sleeve (14), in which the adapter piece (2) is arranged and connected thereto in a rotationally fixed manner, wherein the adapter piece (2) is held in the adjusting sleeve (14) of the handle (1) in a rotationally fixed as well as longitudinally displaceable manner and wherein the adapter piece (2) has latching lugs (23), wherein at least one latching groove (16, 17) is arranged on the inside of the adjusting sleeve (14), with which the latching lugs (23) can latch in a defined position of the adapter piece (2) in the adjusting sleeve (14).

2. Valve upper part according to claim 1, characterised in that, when the external thread (33) is in engagement with a component connected to the control spindle (81), the internal thread (24) of the adapter piece (2) is in engagement with an external thread (33) arranged on a control cylinder (3), which receives a control piston (5) connected to the control spindle (81).

3. Valve upper part according to one of the preceding claims, characterised in that the handle can be fixed in at least two axial positions via an arranged locking device.

4. Valve upper part according to claims 2 and 3, characterised in that the locking device is arranged in the operating part and comprises the control piston (5), which is axially displaceably guided in the control cylinder (3), wherein the control cylinder (3) has a control cam (52), into which an engagement part arranged on the control cylinder (3) engages.

5. Valve upper part according to claim 4, characterised in that the engagement part is formed by a ball (38), which is radially movably guided in the control cylinder (3).

6. Valve upper part according to one of claims 2, 4 or 5, or claim 3 if it is dependent on claim 2, characterised in that the adjusting sleeve (14) at least partially surrounds the control piston (5).

7. Valve upper part according to one of claims 2, 4, 5 or 6, or claim 3 if it is dependent on claim 2, characterised in that a spring (59) is arranged between the control cylinder (3) and the control piston (5), which is pretensioned against the control cylinder (3).

8. Valve upper part according to claim 2, 4, 5, 6 or 7, or claim 3 if it is dependent on claim 2, characterised in that the adjusting sleeve (14) has an internal toothing (18), which engages with an external toothing (63) arranged on the control piston (5), whereby the handle (1) is displaceably guided along the control piston (5).

9. Valve upper part according to one of the preceding claims, characterised in that two latching grooves (16, 17) are arranged inside the adjusting sleeve (14) at an axial distance from one another, preferably extending circumferentially in the radial direction.

10. Valve upper part according to one of claims 2, 4, 5, 6, 7 or 8, or claim 3 if it is dependent on claim 2, or claim 9 if it is dependent on at least one of claims 2, 4, 5, 6, 7 or 8, characterised in that the control spindle (81) has a non-circular connecting section, wherein a receptacle (54) is arranged on the control piston (5) for form-fitting engagement with said non-circular connecting section, which is preferably detachably connected to the control spindle (81).

11. Sanitary fitting with a valve upper part according to any one of claims 1 to 10.