DK171607B1 - valve coupling - Google Patents

Description

-1 - DK 171607 B1

The invention relates to a valve coupling for pump valves in vehicle tires and according to the preamble of claim 1.

For the sake of clarity, some standards used must be stated. Under ISO standard 10475: 1992 (E), threads for tire valves for queues are listed. The most frequently used threads are referred to respectively. 5V2 (DIN: Vg 5.2), having a nominal diameter of 5.2 mm and a pitch of 1.058 mm, and 8V1 (DIN:

Vg 8) which has a nominal diameter of 7.7 mm and a thread pitch of 0.794 mm. These thread types are applied to Dunlop-Woods, Sclave-edge or Schrader valves. The latter type of valve is commonly found on two ordinary cars, where a spring-loaded valve insert when inflating the tire must be kept depressed for passage of air. For this purpose, the valve coupling must be equipped with suitable means which can serve this purpose. It should also be provided with suitable means, e.g. a check valve or the like, it is ensured that air loss is avoided by activating the valve insert. Like the Dunlop-Woods valve, the Sclave -u rand valve has the distinctive feature of opening its valve at air pressure alone. The opening pressure required for the Sclaverand valve is up to 16 bar, and the valve is most often used in connection with high pressure tires with pressures up to 16 bar. The opening pressure of the Dunlop-Woods valve is close to 4 bar, making it easier to open.

20 Known valve couplings (e.g. GB-B-977,139) can only be connected to either the Dun lop-Woods valve and / or the Sclaverand valve, or the Schrader valve. A known coupling to a Schrader valve is of the type in which a rubber cylinder is compressed around the valve by means of a swing arm which compresses the rubber cylinder axially together, whereby the rubber cylinder clamps radially about the valve.

25 For different valve diameters, the auxiliary tool (screw nut 6) is required to be screwed in or out of the valve threads, thereby reducing or increasing the internal diameter in order to establish the connection from the valve coupling to other valve diameters. Loose parts can disappear and can be loosened during use if the pump hose is turned, such that μ is no longer airtight. The disadvantage of the coupling itself is that the user must use many forces to operate the swing arm, so that two hands are required for stabilization when switching on and off.

GB-B-15 99 304 shows a universal valve coupling that can be screwed on all types of valves. The thread (4) corresponding to 8V1 further serves to retain the bush (26) which is provided with an internal thread (30) corresponding to 5V2 to the Sclaverand or Dunlop / Woods valve. The inner valve of the Schrader valve is opened mechanically by means of a fixed pin, indicated by (12). The disadvantage of this type of coupling is that the bushing (26) with 5V2 threads must be removed in order for a Schrader valve to be connected, and conversely, the bushing (26) must be reassembled for a Dunlop-Woods or a Sclaverand valve to be connected les. Here, too, loose parts that can disappear and during use can be loosened if the pump hose is rotated so that the connection is not still airtight.

From DE-B 38 19 771 a universal coupling is known on a hand pump which has two connection holes: one for the Dunlop-Woods and Sclaverand valve and one for the Schrader valve whose inner valve is opened mechanically. The disadvantage of this form of connection is partly that it cannot be fixed to the valve and partly that it can only be used in one particular position where the connected hole faces approximately vertically upwards and finally that the user must find out which of the the two holes to be used for a present valve.

Another known universal coupling, which apparently does not exist in the patent literature, is of the same type as that mentioned in GB-B-15 99 304. Here, the rubber cylinder consists of two parts, of different diameters and lengths, which are of different diameters and lengths, corresponding to 5V2 and respectively. 8V1 found. Axially, proximally displaced on the center line of the holes, a member may be provided which can open the inner valve of a Schroader valve. The disadvantage of this coupling »is partly that two hands must be used to stabilize the coupling and disengagement of

Dunlop-Woods or Sclaverand valves, and partly that the rubber cylinder must be taken out of the housing and turned in order to be able to connect valves with different types of threads, so that the coupling point for connecting the current valve is always closest to the opening of the connection hole. Also, the stick for mechanical opening of the Schrader valve must be turned during the above operation. This is problematic for the general user, as both must be positioned correctly in relation to each other for the coupling to be connected to a valve: combinatorially there are four options to choose from, something that can only be done correctly if you have a user manual for availability. The above -μ parts can be lost, loosened or disappeared during surgery.

Pumping a tire is a problem for many, especially if the tires are fitted with different types of valves, and one and the same pump must be used, as is the case in most households. The object of the invention is to provide a valve coupling which fits all common types of valves, which is easy to operate and which is economically advantageous. The coupling should preferably be used in connection with an existing pump.

-3 - DK 171607 B1

This task is solved according to the invention by the invention as claimed in claim 1.

In a vehicle tire pump valve coupling, said coupling consists of a coupling housing which is partly connected to a pressure transducer, preferably a hand or foot pump, and which partly has a connection hole with a diameter corresponding to the diameter of the valve to be connected the invention being provided by the sealing member being coaxially disposed in the coupling housing and sealing being established in at least two diagonal planes which are provided with a sealing member for varying sizes. has the coaxial center axis of the coupling housing with the center axis of the valve as normal, in the form of at least two sealing members, the internal diameters of which correspond approximately to the outside diameter of the actual valve size to which the coupling is secured during use, that the sealing member closest to the opening of the connection hole in the coupling housing, has the largest ice inside diameter, while the t tningsorgandel, located farthest from the ope - scheme of the coupling hole in the coupling housing, has at least internal diameter, and diameters between the extremes are in corresponding discrete distances between the extreme positions. The coupling location of a valve which is desired to be connected abuts a sealing surface of the sealing member 20 corresponding to that valve in the coupling hole. The coupling has only one connection hole. Therefore, the operation is easy, even without instructions, and loose nipples are superfluous. Therefore, it is always possible to establish a link in one workflow.

In a suitable embodiment of the invention, it is proposed that the fastening means is a rotatable sleeve arranged on the housing, which in the connection hole is provided with threads which correspond to the respective valves and which are sealed against the coupling housing with the sealing means which are located farthest from the connector hole in the connector housing. Here, the coupling can be placed on the valve with an airtight connection, which does not leak when the connected hose is turned. In addition, the placement is completed quickly without any major power supply. The coupler can be switched on and off with one hand.

In order to reduce the wear on the gasket surface of the coupling housing and thus also reduce the force by which the rotatable sleeve is to be rotated, and furthermore, to ensure a reliable seal against valves with 5V2 threads, it is proposed in an even more convenient design that the innermost thread provided by a 5V2 threaded bushing, the bushing is mounted, - to a small extent - axially slidable in a tapered cutter in the rotatable -4 - DK 171607 B1 coupling bushing and is rotatably coupled to the coupling bushing by a set of ribs which is distributed along the circumference of the bushing and which engages in corresponding grooves in the coupling bushing, and that the sealing means is radially stair-shaped and rests in an also stair-shaped cutout in the coupling housing. Thus, it is ensured that frictional forces do not occur between the gasket and the coupling bush during most of its tightening and unscrewing, whereas the coupling bush pulls the coupling housing and its gasket against the valve at the tightening. The seal takes place against the core of the valve thread and is stabilized as a result of the reduced radius of the inner, stair-shaped portion of the seal.

Connection to just about all valves is possible as this coupling can open such an inner valve in a Schrader valve which opens at an air pressure of approx. 5-6 bar. The air pressure in the pump hose is of the same order of magnitude as when inflating a high pressure tire fitted with a Sclaverand valve. This can be done best with a high pressure hand or foot operated bicycle pump. There are types of inner valves that cannot be opened by means of air pressure from an ordinary bicycle pump (eg, 10 bar max.). Here, the connection can be made simple and convenient in two ways. Either the latter inner valve is replaced by the former and embodiments of the invention without a stick are used as coupling, or the inner valve can according to a suitable embodiment of the invention be opened by extending and coaxially with the center axis of the coupling housing, an activation pin extending at axial displacement from a position furthest from the valve (Fig. 4A) is advanced to actuate a central valve lifter on the inner valve (Fig. 4B). In this latter design, the required 2s pumping power is considerably lower when a Schrader valve is to be pumped, because no compressed air is needed to open the valve. The pumping can therefore be done with a regular bicycle pump.

The Schrader valve has the largest outer diameter of the external thread (thread type ISO 4570/3 8V1 and ISO 10475: 1992-12V1, respectively) and the coupling site is a close-3o test at the opening of the connection hole. The inner valve of the Dunlop-Woods valve and the Sclaverand valve have the same thread type, where the outer diameter of the external thread (thread type ISO 4570/2 5V2) is smaller than the diameter of the internal thread 8V1. Therefore, it is possible that the inner valve of Dunlop-Woods and the Sclaverand valve can pass both the coupling site for 8V1 threads and for 35V 12V1 threads, and consequently the coupling site for coupling 5V2 threads is furthest from the opening of the connection hole. The thread 5V2 on the Dunlop-Woods inner - -5 - DK 171607 B1 valve (both the type which is DIN standard and the type which in daily language is called the 'ball valve'), extends far enough beyond the nut 8V1, which attaches the valve to the valve body, and if outer diameter is smaller than the internal threaded diameter of the 12V1 thread in the bushing. Thus, there is sufficient space 5 for at least two types of threads having a corresponding sealing ring.

The beginning of the connection point for 5V2 threads lies at a distance a from the opening of the connection hole. Since the load on the connection is low, it is not necessary to use the entire length of the internal thread, as practice suggests 0.8x of the target of the external thread connected. This practice comes from high-mechanical mechanical structures where the thread is screwed with a wrench. It is therefore possible that the connection point for 5V2 threads is behind the connection point for the 8V1 thread.

For example, the invention may be embodied in a variety of embodiments which appear from the dependent claims.

The invention is further explained in the following with the aid of the drawing. In the drawing:

FIG. An example of a known coupling in which two loose nipples are to be turned depending on the valve to be coupled 20 to the hose; 1 shows the universal coupling in a first embodiment, coupled to a hose from a (high pressure) foot pump, where the coupling is screwed onto the valve and a Schrader valve can be opened with air pressure, FIG. 2 shows the coupling according to FIG. 1, in another embodiment, where the hose nozzle is in extension of the center line; FIG. 3A the coupling according to FIG. 1 in a third embodiment, in which the thread 5V2 of the bushing and the Schrader gasket are displaceable parallel to the center axis, μ fig. 3B shows a detail of the coupling according to FIG. 3A, (section A-A), FIG. 4A, B the universal coupling of FIG. 1, in a fourth embodiment in which the coupling is screwed onto the valve and a Schrader valve can be opened mechanically by means of a 35 pin which is shown in the upper and lower positions, -6 - FIG. 5A, B the universal coupling of FIG. 4A, 4B in a fifth embodiment, wherein the pin feed mechanism is differently designed and the pin is shown in the upper and lower portions, respectively. bottom position, s fig. 6A, B the universal coupling of FIG. 5A, 5B, in a sixth embodiment, wherein the pin feed mechanism is configured with a large pitch increase and the pin is shown in the upper and lower ends respectively. bottom position, fig. 7 shows a detail of the coupling according to FIG. 6A, (section X - X) and FIG. 6B, (section Y-Y), FIG. 8 shows the feeding cylinder of the embodiment according to FIG. 6A, 6B, (section Z-Z), FIG. 9 shows the universal coupling according to FIG. 6A through 8, connected to one

Dunlop-Woods valve, with a DIN-standard inner-ice valve, fig. 10 shows the universal coupling of FIG. 6A through 8, connected to one

Dunlop-Woods valve, with a ball valve like inner valve, fig. 11 the universal coupling of FIG. 6A through 8, connected to a μ Sclaverand valve, fig. 12 the universal coupling of FIG. 6A through 8, connected to one

Schrader valve, where the stick opens the inner valve,

A first embodiment shown in FIG. 1, a housing 3 is connected to a pump hose 1 by a (high pressure) pump by means of a clamping ring 2. At the connection hole 5 is provided a sleeve 6 which can be rotated freely in relation to the fixed housing 3 and which is provided with at least two types of internal thread 7, 9: 5V2: 7 and 8V1: 9. Both threads end in a rubber gasket 12, 13. The top of these gaskets 12 lies on the interface 14 between the fixed housing 3 and the bushing-6 gene and seals this transition. All connections are airtight as the coupling location of the coupled valve thread abuts the sealing surface 12a or 13a: a fixed connection is the result which is firm enough to withstand rotation of the hose 1. Only a few turns of the sleeve 6 are sufficient to secure the coupling . Since the fixed housing 3 here is bent at an angle a of e.g. 30 ° -60 ° relative to the center axis 4 of the connection hole 5, the hose 1 can be held by a user in the palm of the hand, while the sleeve 6 is rotated between thumb and forefinger on the same hand.

In the figure, the pump hose 1 is fixed by means of a clamping ring 2 on the fixed housing 3, which is bent at an angle α of e.g. 30-60 ° with respect to the center line 4 of the s connection hole 5. In the illustrated embodiment, the sleeve 6 is provided with two ISO thread types: 5V2 thread 7, which begins furthest from the opening 8 of the connection hole 5 and 8V1 thread 9 beginning at the aforementioned opening. By attachment and disconnection, the bushing 6 is rotated and held by means of gripping claws 10 in the groove 11 of the fixed housing 3. Seals 12 and 13 provide sealing against the thread or at the threads 5V2 and 8V1 by means of the sealing faces 12a, 13a. The gasket 12 also seals the transition 14 between the fixed housing 3 and the bushing 6 when the coupling is applied to a Schrader valve. The aperture 8 on the underside of the bushing 6 is cone-shaped 15 for reliable control of the valve coupling gene by connection to a valve.

ice Another design (Fig. 2) is a coupling similar to the first design. The figure shows another embodiment with a fixed housing 16, without bending, on the end of a hose 17 of a (high pressure) hand pump. Since the housing 16 here is not bent and it is connected to a hose 17 from a (high pressure) hand pump, it can be stored in the handle of the pump during transport.

20 A third embodiment shown in FIG. 3A and 3B, an improvement of the coupling of FIG. 1 and FIG. 2, the bush 191 now rotating freely and without friction about the housing 190 until a valve is engaged. The connection is therefore faster and easier. The air gap b and the fact that the lower gasket 194 and the bushing 193 with 5V2 threads can be displaced parallel to the center line of the valve 25 make this possible. The sleeve 193 rotates with the sleeve 191, the first being provided with at least two ribs 196 which fit into the grooves 197 of the sleeve 191. The upper gasket 192 is embedded in the housing 190 and seals therein. When a 5V2-threaded valve is engaged, the sleeve 193 is pushed upwards until it abuts the upper gasket 192. When the valve is rotated upwardly against the upper gasket 191, and thus also the sleeve 193 is brought up against the upper gasket 192. the core of the valve thread and the valve is stopped on the edge 198 of the air supply hole 75, after which the bushing 193 with 5V2 threads is pressed down against the bushing 191 (shown with 197). The diameter of the sealing member 200 is reduced towards the coupling housing 190 to increase the seal when a 5V2-35 thread is screwed onto a valve. To facilitate the placement, the sealing means may be provided with a groove 203 on the side facing the valve. By - 8 - DK 171607 B1 disconnection, things are done in the reverse order. When a Schrader valve is actuated, the gasket 194, as well as the sleeve 193, are pushed against the upper gasket 192, thereby providing a tight connection. When disconnected, things happen in reverse order. The figure shows the third embodiment, in which the housing 190 is provided with a coupling sleeve 191 which can freely and without friction rotate around the housing 190 due to the air gap b between the upper gasket 192 and the sleeve 193 and the coupling sleeve 191. The gasket 194 for the Schrader valve is located freely in the coupling bushing 191, on the thread 8V1 195. The bushing 193 with the 5V2 thread is loosely but axially displaceable, in a cone-shaped cut 202 in the coupling bushing 191. Both can be displaced parallel to the center line of the valve.

The sealing member 200 is embedded in a stair-cut cutter 201 in the housing 190 with an external portion 192 which also seals the junction between the housing 190 and the coupling bushing 191. The bushing 193 may rotate with the coupling bushing 191, provided with at least two ribs 196 to fit. in the corresponding notes 197 of the coupling bushing 191 (Fig. 3B). When a Dunlop-Woods or Sclave rim valve is coupled, the sealing member 200 is sealed on the core of the valve thread. The valve is stopped at the edge 198 so that the Dunlop-Woods valve nut does not get stuck on the underside 199 of the 8V1 thread. Sealing member 200 has at the top a radially stepped, reduced diameter.

20 A fourth embodiment shown in FIG. 4A and 4B, is an improvement of the coupling so that it can also be used for all Schrader valves. It is a coupling with a stick, which can mechanically open the type of inner valve of the Schrader valve, which cannot be opened by means of compressed air, prepared by e.g. a bicycle pump for max. 10 bar. It also reduces the necessary pumping force 25 when a tire with a Schrader valve is to be pumped so that it can be pumped with a regular bicycle pump. The pin 21 moves through the top of the fixed housing 19 and can be fixed in two positions. The upper position 18 allows all types of valves to be connected, while in the lower position 32 only a Schrader valve can be connected, with the pin 21 pressing on its inner valve. Since μ it is desirable that the change from one position to the other goes quickly, the pin - the 21 is provided with thread 25 with a relatively large increase. Sealing takes place with two gaskets 26, 27, located just behind the thread ends of the pin 21. These fit into tapered holes in the fixed housing, thus centering the pin relative to the inner valve of the Schrader valve. The centering is also essential for the pin 21 to get past the connection point of the 5V2 thread: therefore, the other side of the lower gasket 26 is provided with a cone 30, since centering -9 - DK 171607 B1 occurs in the final phase of the fastening. The pin 21 is made of e.g. impact-resistant material while the top 31 is made of resilient material so that impact can be captured here. The position of the pin shows the user what types of valves the coupling can currently be connected to. The pin 21 can be moved independently of whether the coupling is s attached or not. A necessary prerequisite for the use of such a pin 21 is that before or in the coupling housing, seen in the direction of flow of the air, a non-return check valve is arranged which prevents leakage of air from the Schrader valve when the pin 21 is activated.

FIG. 4A and 4B show the fourth embodiment in which the stick is in the upper 18 io and lower 32 position, respectively. At the top of the fixed housing 19 is a threaded hole 20 in which the pin 21 can be moved and secured. The pin 21 moves concentrically around the center line 4 of the aperture 8 of the connection hole 5. The thread 25 has a large pitch. The connections are made airtight by the thread 25 ending in an elastic, tapered disk 26 and 27. The disk 27 guides the pin 21 with the end 29 in ice position by means of a tapered hole 28 in the fixed housing 19. The other side of the disk 26 is provided with a cone 30. The top 31 of the pin 21 is made of a flexible material which can absorb shock. The pin 21 is made of a impact resistant material.

A fifth embodiment shown in FIG. 5A and 5B are an improvement of the fourth embodiment. The pin 161 is now built into a rotary knob 162 which can rotate at the top of the fixed housing 164. Impact on the rotary knob 162 is transferred to the fixed housing 164 and the pin 161 is thus spared. The seal now takes place with only one sealing ring 168 located between the underside of the rotary knob 162 and pin 161. When the rotary knob is rotated, the pin displaces coaxially with the center line 4 of the connection hole 5, as two fins 166 running in two slots 167 of this hole, the pin 161 prevents rotating. In order to reduce friction, the diameter of the stick is slightly reduced between extremes.

FIG. 5A and 5B show the coupling of FIG. 1, where the pin 161 is built into the rotary knob 162 which is held by gripper claws 163 in a groove 160 of the fixed housing 164. The rotary knob 162 is provided with internal thread 165 which has a large pitch. When the knob 162 is turned, the pin 161 displaces axially on the center line 4 of the aperture 8 of the connection hole 5, as the pin 161 is provided with fins 166 running in slots 167 in this hole 5. The seal is provided with one gasket 168. 162 is manufactured by e.g. elastic material- DK 171607 B1 - ΙΟ - ale. The pin 161 is shown in FIG. 5A in upper position 18 and in FIG. 5B in the lower position 32.

A sixth embodiment shown in FIG. 6A - 8, is a further improvement of the fifth embodiment. The pin 40 is also built-in and therefore no leaks occur due to dirt. The thread increase is now even greater, so that the stick can change from one position to another much faster. The pins 40

is moved by a rotary knob 43 at the top of the fixed housing 35. The feed mechanism of the pin 40 is known e.g. from lipsticks. The connection hole in the fixed housing is provided with an internal thread. The rotary knob 43 is on the underside of the sight with a cylinder 48 which can rotate in the periphery of the connection hole 5.

in the wall of the cylinder there are two slots 49, 50 which are parallel to the center line 4 of the connection hole 5. In the cylinder 48, the pin 40 can be moved axially, since on the side of the pin 40 two cone-shaped projections 51, 52 which fit into the aforementioned slots 49, 50 and threads 67. Through the ice most of the movement, the gain of the thread is so large that the thread is threaded. Therefore, the threading force is low and the slots of the cylinder can push the pin projections 51, 52 into the thread 67: If the knob 43 is rotated, the pin 40 moves from one extreme position 18 to the other extreme position 32. It is possible that the thread pitch may be variable whereby the pin 40 can absorb a 2o force from the inner valve of the Schrader valve in the lower position 32, and it can stand in the upper position so that the pin 40 cannot move. Namely, both slots 49, 50 have two diametrically opposite slots 55, 56, 57, 58 at both ends. The projections 51, 52 from the pin 40 transmit a force perpendicular to the center line 4 of the connection hole to the cylinder wall. The turning knob 43 is locked at the end of the rotation by guiding the projections 51, 52 into the opposite slots 55, 56, 57, 58 and the locking occurs by locking a bead 47 on the housing 35 in a corresponding projection 46 in the rotate the knob 43. The user would otherwise be able to rotate the knob 43 with a small push and push the protrusion 51, 52 out of the aforementioned slots 55, 56, 57, 58, two after which the pin 40 will be free to move. The user feels a small click, which means the dial is locked in the correct position. The user can directly see which valves can be connected, since the fixed housing 35 is provided with the symbols 71, 72, 73 at the end of the rotation of the valves. Generally, the wind rise is so large that the rotary knob only has to be rotated approx.

35 °. Here too, a check valve is needed.

DK 171607 B1 - 1 1 - In fig. 6A - 8, by means of clamping ring 2, the pump hose 1 is connected to the fixed housing 35. The angle α between the center line 36 of the clamping ring 2 and the center line 4 of the opening 8 of the connection hole 5 is e.g. 30 - 60 °. The bushing 6 with internal thread and gaskets is identical to that of FIG. 1. The pin 40 can move 5 on the center line 4 of the connection hole 5 from position 18 to position 32 as the rotary knob 43 is turned from position 44 (Fig. 6A) to position 45 (Fig. 6B) and vice versa. The rotary knob 43 is provided at the bottom with a radially aligned, circumferential projection 46 which encloses a corresponding bead 47, and it is pivotally locked in positions 44 and 45 by rotating the knob 43 to engage the bead 47: see section XX (FIG. 7). The cylinder 48 is directly connected to the rotary knob 43. In the cylinder 48 there are two slots 49, 50, one of which 49 is open on the opposite side of the rotary knob 43. The two diametrically opposed cone-shaped projections 51, 52 are moved in the slots 49 , 50. The slots 49, 50 with center lines 53, 54 parallel to center line 4 have at each end two pairs of diametrically opposite slits 55, 56, 57, 58, with center lines 59, 60, 61, 62 is perpendicular to the center lines 53, 54. The slots 55, 56, 57, 58 end in a semicircle whose center 63, 64, 65, 66 is slightly further from the nearest side of the slots 49, 50 than the radii of the projections 51, 52. Furthermore, the projections 51, 52 are moved in an internal thread 67 from the connection hole 5.

20 The thread 67 has such an increase that the rotary knob 43 should only rotate approx. 240 ° from position 44 to 45 or vice versa. When the knob 43 is turned, the slots 49, 50, 55, 56, 57, 58 push to the projections 51, 52 of the thread 67. The knob 43 is secured to the housing 35 by means of claws 68 which move behind an internal projection 69 of the knob. The above construction is made airtight by means of a gasket 70 at the top of the fixed housing 35. On the sides of the fixed housing 35 at positions 44 and 45, symbols 71, 72, 73 are placed on the valve types which can be connected.

Fig. 9 shows Dunlop-Wood's valve body 175 with a DIN-normed inner valve 176, coupled to a universal coupling 174 from fig. 6A, 6B, 7 and 8. µ FIG. 10 shows the same as FIG. 9, with the difference that inner valve 177 is of the type 'ball valve'.

FIG. 11 shows a Sclaverand valve 178 coupled to the aforementioned coupling 174.

FIG. 12 shows a Schrader valve 179, coupled to coupling 174 - the pin opens the inner valve.

35

Claims (5)

Valve coupling according to claims 1 and / or 2, characterized in that the innermost thread is provided by a bushing (193) with 5V2 threads, in which the bushing (193) is mounted, to a small extent axially displaceable in a cone-shaped milling ( 202) in the rotatable coupling bush (191) and pivot pin is coupled to the coupling bush (191) by means of a set of ribs (196) which are for -30 divided along the circumference of the bush (193) and which engage corresponding grooves ( 197) in the coupling sleeve (191) and that the sealing member (200) is radially stair-shaped and rests in an also stair-shaped cut-out (201) in the coupling housing (190). Valve coupling according to claim 1, 2 or 3, characterized in that, in extension of and coaxially with the center axis (4) of the coupling housing (19), an actuating pin (21) extends, which in axial displacement from a position farthest from - 13 - DK 171607 The B1 valve (Fig. 4A) is advanced to actuate a central valve lifter on the inner valve (Fig. 4B). Valve coupling according to claim 4, characterized in that an actuating lever (31) is used for operating the actuating pin (21) which forms part of the actuating pin. Valve coupling according to claim 4, characterized in that the operating handle (162) is pivotally attached to the coupling housing (164) concentrically with the actuating pin (161) and accommodates in a central bore and having guide means which cooperate with corresponding guide means on the actuating pin (161). , which is pivot-free, but slidably secured in the coupling housing (164), for its rotational, axial displacement from an inactive position (Fig. 5A) to an actuating position (Fig. 5B). Valve coupling according to claim 4, characterized in that the control handle (43) is pivotally attached to the coupling housing (35) concentric with the actuating pin ice (40) and accommodates in a central bore and has a cylinder (48) which extends with suitable guides between the coupling housing (35) and the actuating pin (40) slidably secured in the control handle (43), slidable in the cy-cylinder (48) and rows of guide means (51, 52) out through slots (49, 50) in the cylinder (48) and into corresponding guide means (67) in the coupling housing 20 (35) for the axial displacement of the actuating pin (40) from an inactive position (Fig. 6A) to an actuating position (Fig. 6B).