Five-way valve

Abstract

The utility model relates to a five-way valve which comprises a valve body, a valve cavity, five channel ports and a pipeline connecting assembly. The pipeline connecting assembly is composed of a pressing cover, a butt joint and a locking cover, firm connection of the butt joint is achieved through threaded fit and abutting of a limiting ring and a protruding ring, and dismounting and mounting are convenient. The valve body is provided with four side channels and a main channel, the main channel is perpendicular to the side channels, and the flowing direction of liquid is adjusted by rotating the valve element. The pressing cover is provided with a sealing ring, so that the sealing performance is improved. The handle controls the valve element to rotate through the valve rod, and the handle locking device can prevent misoperation. The valve is simple in structure, good in sealing performance, convenient to disassemble and maintain and suitable for liquid flow direction control scenes.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field more specifically, it relates to a five -way valve. BACKGROUND

[0002] In the pipeline system, in order to be able to control different body flow to pass into different pipeline, need to install multiple valves on the pipeline, meet the arrangement requirement of pipeline system, this leads to the number of valve is very much, make the valve number of whole pipeline system increases, not only increase the installation cost, also increase the complexity of operation.

[0003] Chinese patent announcement number CN 106641343 A, announcement day is May 10, 2017, and the name of invention is five five -way array formula switching valve, and the application discloses a five -way array formula switching valve, which realizes the function of one inlet and four outlets by setting an outlet, but when using, since the overall structure is complex, when the sealing ring inside fails, the sealing ring needs to be replaced, and all the bolts in the circumferential direction are removed, so that the replacement of the sealing ring is very complex. UTILITY MODEL CONTENTS

[0004] The utility model overcomes the insufficient of five -way valve structure complex in prior art, and the internal component is inconvenient to replace, provides a five -way valve, it has the characteristics of simple structure, and the internal component is convenient to replace, in addition, the five -way valve in the application can realize automatic locking, prevent the valve from being opened or closed by mistake due to accidental touch, and also can prevent the problem that the valve core is rotated due to fluid impact.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme: a five -way valve, comprising:

[0006] Valve body, the valve cavity is arranged in the valve body, and five channel ports communicating with the valve cavity are arranged on the side wall of the valve body;

[0007] Pipeline connecting assembly: including compression cover, butt joint with channel port Butt joint, keep butt joint and channel port abutment Locking cover;Locking cover and the outer surface of channel are threadedly matched, the end of locking cover is provided with the limiting ring matched with the convex ring.

[0008] In the utility model, by setting pipeline connecting assembly at channel port, locking cover, compression cover and abutment head parts can be conveniently disassembled, and then the parts in the valve body can be conveniently replaced, having the characteristics of installing and disassembling the internal parts of valve body;And the valve core in the application adopts three -way valve core, therefore, by rotating handle, the direction of liquid flow in main channel port can be switched.

[0009] Preferably, the five communication openings include four side channels and one main channel; the four side channels are evenly distributed along the circumferential direction, and the main channel is arranged at a position perpendicular to the four side channels.

[0010] The main channel serves as a main liquid inlet, and the remaining side channels serve as side liquid outlets, so that the direction of liquid outlet can be conveniently adjusted by rotating the valve core.

[0011] Preferably, the compression cover is threadedly connected with the inner side wall of the channel opening.

[0012] The second external thread of the compression cover and the second internal thread of the channel opening are connected in cooperation, so that the compression cover can be more firmly fixed in the channel opening.

[0013] Preferably, the end of the compression cover facing the valve cavity is provided with a first sealing ring.

[0014] The first sealing ring at the end of the compression cover can cooperate with the valve core to improve the sealing effect.

[0015] Preferably, the end of the compression cover away from the valve cavity is provided with a second sealing ring.

[0016] The second sealing ring can improve the sealing performance between the joint and the sealing cover, and under the action of the locking cover, the joint can be tightly abutted in the second sealing ring.

[0017] Preferably, the inner side wall of the end of the compression cover away from the valve cavity is provided with at least two oppositely arranged notches.

[0018] The notches cooperate with the wrench to facilitate the rotation of the compression cover, and facilitate the disassembly and installation of the compression cover.

[0019] Preferably, the outer side wall of the compression cover is provided with a third sealing ring.

[0020] The third sealing groove abuts against the outer side wall of the compression cover and the inner side wall of the channel opening, improving the sealing effect between the compression cover and the channel opening.

[0021] Preferably, a mounting hole communicating with the valve cavity is arranged on the valve body, and the valve rod passes through the mounting hole and is connected with the valve core inside; a handle is connected to the end of the valve rod away from the valve core.

[0022] The handle is arranged to facilitate the rotation of the valve rod.

[0023] Preferably, a placing groove is arranged on the handle, and a wrench is arranged in the placing groove, and the two ends of the wrench are provided with rotating heads cooperating with the compression cover.

[0024] When the compression cover needs to be disassembled or installed, the wrench in the placing groove is removed, the rotating heads at the two ends of the wrench are matched with the notches, and then the wrench is rotated, so that the compression cover can be conveniently disassembled, and the handle serves as a storage function.

[0025] As preferred, a handle locking device is arranged on the handle, the handle locking device comprises a button slidingly arranged on the handle, a locking head connected with the button and a pushing piece pushing the locking head to move in the direction of the valve rod; a plurality of locking grooves are arranged on the outer side of the valve body and in the circumferential direction of the valve rod; the pushing piece pushes the locking head to abut in the locking groove.

[0026] The automatic locking realized by the pushing piece pushing the locking head can prevent the valve from being opened or closed by mistake due to accidental touching, and can also prevent the valve core from rotating due to fluid impact.

[0027] Compared with the prior art, the utility model has the advantages that: in the utility model, the pipe connecting assembly is arranged at the passage opening, so that the locking cover, the pressing cover and the abutting head and other parts can be conveniently disassembled, the parts in the valve body can be conveniently replaced, the valve body has the characteristics of convenient installation and disassembly, the valve core adopts a three-way valve core, the direction of liquid flow in the main passage opening can be switched by rotating the handle, automatic locking is realized by the pushing piece pushing the locking head, accidental opening or closing of the valve due to accidental touching can be prevented, and the valve core can be prevented from rotating due to fluid impact. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural schematic view of the utility model.

[0029] Figure 2 is a top view of the utility model.

[0030] Figure 3 is Figure 2 the sectional view of A-A direction in the

[0031] Figure 4 is Figure 2 the sectional view of B-B direction in the

[0032] Figure 5 is a perspective view of the handle and the wrench of the utility model.

[0033] Figure 6 is a structural schematic view of the wrench in another embodiment of the utility model.

[0034] In the drawing: 1, valve body, 11, valve cavity, 12, side passage, 121, first outer thread, 122, second inner thread, 13, main passage, 14, mounting hole, 15, locking groove;

[0035] 2, pipe connecting assembly, 21, compression cover, 211, second external thread, 212, first sealing groove, 213, first sealing ring, 214, second sealing groove, 215, second sealing ring, 216, third sealing groove, 217, third sealing ring, 218, notch, 22, butt joint, 221, convex ring, 23, locking cover, 231, first internal thread, 232, limiting ring;

[0036] 3, valve core;

[0037] 4, valve stem;

[0038] 5, handle, 51, placing groove, 52, sliding groove;

[0039] 6, wrench, 61, rotating head;

[0040] 7, handle locking device, 71, button, 72, locking head, 73, pusher, 74, sliding hole, 75, piston, 76, connecting rod, 77, oil cavity, 78, one-way valve piece, 781, oil leakage hole. DETAILED DESCRIPTION

[0041] The technical scheme of the utility model will be further described in detail below by specific examples and in combination with the drawings:

[0042] Example 1: refer to Figures 1 to 6 As shown in the figure, a five-way valve comprises:

[0043] Valve body 1, the valve body 1 is provided with valve cavity 11, on the side wall of the valve body 1, five channel ports communicating with the valve cavity 11 and the outside are provided; the structures of the five channel ports are the same, and each channel port is provided with a pipe connecting assembly 2, and the pipe connecting assembly 2 can conveniently connect the channel port and the water pipe channel outside.

[0044] The pipe connecting assembly 2 comprises a compression cover 21, a butt joint 22 and a locking cover 23. The butt joint 22 is butt jointed with the end of the channel port, the locking cover 23 is arranged on the outer side wall of the channel port, the inner side of the locking cover 23 is provided with a first internal thread 231, the outer side wall of the channel port is provided with a first external thread 121, and the first internal thread 231 of the locking cover 23 is matched with the first external thread 121 of the channel port. The end of the butt joint 22 abutting with the channel port is provided with a convex ring 221, the convex ring 221 is arranged in the outer circumferential direction of the butt joint 22, the end of the locking cover 23 is provided with a limiting ring 232, the limiting ring 232 is arranged on the inner side wall of the locking cover 23, the limiting ring 232 is sleeved on the outer side of the butt joint 22, and the limiting ring 232 is abutted with the convex ring 221.

[0045] The rotating locking cover 23 drives the convex ring 221 through the limiting ring 232, and the limiting ring 232 limits the convex ring 221, so that the adapter 22 is tightly abutted at the end of the passage opening, thereby facilitating the connection and disconnection of the water pipe.

[0046] In one embodiment, the five communication openings include four side passages 12 and one main passage 13; the four side passages 12 are uniformly distributed along the circumferential direction, and the main passage 13 is arranged at a position perpendicular to the four side passages 12. The main passage 13 serves as a main liquid inlet, and the remaining side passages 12 serve as side liquid outlets, so that the direction of liquid outlet can be conveniently adjusted by rotating the valve core 3.

[0047] The valve body 1 is provided with a mounting hole 14 communicating with the valve cavity 11, and the valve rod 4 passes through the mounting hole 14 and is connected with the valve core 3 inside; the handle 5 is connected to the end of the valve rod 4 away from the valve core 3. The mounting hole 14 and the main passage 13 are arranged on both sides, respectively. Rotating the handle 5 drives the valve rod 4 to rotate, thereby controlling the angle of rotation of the valve core 3. The valve core 3 is a three-way valve core, which forms a "T" shape structure in the valve core 3. One passage of the valve core 3 corresponds to the main passage 13, and the other two passages are perpendicular to the main passage 13. Therefore, by rotating the valve core 3, the flow direction of the waterway can be adjusted, so that the flow directions of the two waterways are perpendicular.

[0048] In one embodiment, the compression cover 21 is threadedly connected with the inner side wall of the passage opening. Specifically, the second outer thread 211 is arranged on the outer side wall of the compression cover 21, and the second inner thread 122 is arranged on the inner side wall of the passage opening. The second outer thread 211 of the compression cover 21 and the second inner thread 122 of the passage opening are connected in cooperation, so that the compression cover 21 is more firmly fixed in the passage opening.

[0049] In one embodiment, the compression cover 21 is provided with a first sealing groove 212 at one end facing the valve cavity 11, and a first sealing ring 213 is arranged in the first sealing groove 212. The first sealing ring 213 at the end of the compression cover 21 can cooperate with the valve core 3 to improve the sealing effect.

[0050] In one embodiment, the compression cover 21 is provided with a second sealing groove 214 at one end away from the valve cavity 11, and a second sealing ring 215 is arranged in the second sealing groove 214. The arrangement of the second sealing ring 215 can improve the sealing performance between the adapter 22 and the sealing cover 23. Under the action of the locking cover 23, the adapter 22 can be tightly abutted in the second sealing ring 215.

[0051] In one of the embodiments, the outer side wall of the compression cover 21 is provided with a third sealing groove 216, and a third sealing ring 217 is arranged in the third sealing groove 216. The third sealing groove 216 abuts against the outer side wall of the compression cover 21 and the inner side wall of the passage port, thereby improving the sealing effect between the compression cover 21 and the passage port.

[0052] In one of the embodiments, the inner side wall of the compression cover 21 away from the valve cavity 11 is provided with at least two opposite notches 218. In this embodiment, four notches 218 are provided, and the included angle between two adjacent notches 218 is 90 degrees. The notches 218 are matched with the wrench 6, so that the compression cover 21 can be conveniently rotated, and the compression cover 21 can be conveniently disassembled and assembled.

[0053] In one of the embodiments, the handle 5 is provided with a placing groove 51, and the wrench 6 is arranged in the placing groove 51. The two ends of the wrench 6 are provided with rotating heads 61 matched with the compression cover 21. When the compression cover 21 needs to be disassembled or assembled, the wrench 6 in the placing groove 51 is taken out, the rotating heads 61 at the two ends of the wrench 6 are matched with the notches 218, and then the wrench 6 is rotated, so that the compression cover 21 can be conveniently disassembled. The wrench 6 and the placing groove 51 are in interference fit, and the wrench 6 can be clamped in the placing groove 51. When the wrench 6 needs to be used, the wrench 6 can be conveniently disassembled.

[0054] In the utility model, the pipeline connecting assembly 2 is arranged at the passage port, so that the locking cover 23, the compression cover 21 and the butt joint 22 and other parts can be conveniently disassembled, and then the parts in the valve body 1 can be conveniently replaced, and the valve body 1 has the characteristics of assembling and disassembling the internal parts. The valve core 3 in the application is a three-way valve core, so that the direction of liquid flow in the main passage 13 can be switched by rotating the handle 5.

[0055] Embodiment 2: refer to Figures 1 to 6 As shown in the figure, a five-way valve comprises:

[0056] The valve body 1 is provided with a valve cavity 11, and five passage ports penetrating the side wall of the valve body 1 and communicating with the valve cavity 11 and the outside are arranged. The five passage ports are the same in structure, and each passage port is provided with a pipeline connecting assembly 2. The pipeline connecting assembly 2 can conveniently connect the passage port with the water pipe channel outside.

[0057] The pipeline connecting assembly 2 comprises a pressing cover 21, a butt joint 22 and a locking cover 23. The butt joint 22 is butted with the end of the channel port, and the locking cover 23 is arranged on the outer side wall of the channel port. The inner side of the locking cover 23 is provided with a first inner thread 231, and the outer side wall of the channel port is provided with a first outer thread 121. The first inner thread 231 of the locking cover 23 is matched with the first outer thread 121 of the channel port. The end of the butt joint 22 butted with the channel port is provided with a convex ring 221 arranged in the outer circumferential direction of the butt joint 22. The end of the locking cover 23 is provided with a limiting ring 232 arranged on the inner side wall of the locking cover 23. The limiting ring 232 is sleeved on the outer side of the butt joint 22, and the limiting ring 232 is butted with the convex ring 221.

[0058] The locking cover 23 is rotated to drive the convex ring 221 through the limiting ring 232. The limiting ring 232 limits the convex ring 221, so that the butt joint 22 is butted on the end of the channel port, thereby facilitating the connection and disconnection of the water pipe. The parts inside the valve body 1 can be conveniently disassembled and replaced.

[0059] In one embodiment, the five communication ports comprise four side channels 12 and one main channel 13. The four side channels 12 are uniformly distributed along the circumferential direction, and the main channel 13 is arranged at a position perpendicular to the four side channels 12. The main channel 13 serves as a main liquid inlet, and the remaining side channels 12 serve as side liquid outlets. The direction of liquid outlet can be conveniently adjusted by rotating the valve core 3.

[0060] The valve body 1 is provided with a mounting hole 14 communicating with the valve cavity 11. The valve rod 4 passes through the mounting hole 14 and is connected with the valve core 3 inside. The handle 5 is connected to the end of the valve rod 4 away from the valve core 3. The mounting hole 14 and the main channel 13 port are arranged on both sides, respectively. The handle 5 is rotated to drive the valve rod 4 to rotate, thereby controlling the angle of rotation of the valve core 3. The valve core 3 is a three-way valve core, which forms a "T" shape structure in the valve core 3. One channel of the valve core 3 corresponds to the main channel 13 port, and the remaining two channels are perpendicular to the main channel 13 port. Therefore, by rotating the valve core 3, the flow direction of the waterway can be adjusted, and the flow directions of the two waterways are perpendicular.

[0061] In one embodiment, the pressing cover 21 is threadedly connected with the inner side wall of the channel port. Specifically, the outer side wall of the pressing cover 21 is provided with a second outer thread 211, and the inner side wall of the channel port is provided with a second inner thread 122. The second outer thread 211 of the pressing cover 21 and the second inner thread 122 of the channel port are matched and connected, so that the pressing cover 21 can be more firmly fixed in the channel port.

[0062] In one of the embodiments, the pressing cover 21 is provided with a first sealing groove 212 at one end thereof facing the valve cavity 11, and a first sealing ring 213 is arranged in the first sealing groove 212. The first sealing ring 213 at the end of the pressing cover 21 can cooperate with the valve core 3 to improve the sealing effect.

[0063] In one of the embodiments, the pressing cover 21 is provided with a second sealing groove 214 at one end thereof away from the valve cavity 11, and a second sealing ring 215 is arranged in the second sealing groove 214. The second sealing ring 215 can improve the sealing performance between the joint 22 and the sealing cover 23, and the joint 22 can be tightly abutted in the second sealing ring 215 under the action of the locking cover 23.

[0064] In one of the embodiments, the outer side wall of the pressing cover 21 is provided with a third sealing groove 216, and a third sealing ring 217 is arranged in the third sealing groove 216. The third sealing groove 216 abuts against the outer side wall of the pressing cover 21 and the inner side wall of the passage opening, thereby improving the sealing effect between the pressing cover 21 and the passage opening.

[0065] In one of the embodiments, the inner side wall of the pressing cover 21 at one end thereof away from the valve cavity 11 is provided with at least two oppositely arranged notches 218. In this embodiment, the notches 218 are four, and the included angle between two adjacent notches 218 is 90 degrees. The notches 218 cooperate with the wrench 6 to facilitate the rotation of the pressing cover 21, and facilitate the disassembly and assembly of the pressing cover 21.

[0066] In one of the embodiments, a placing groove 51 is arranged on the handle 5, and a wrench 6 is arranged in the placing groove 51. The two ends of the wrench 6 are provided with rotating heads 61 which cooperate with the notches 218. When the pressing cover 21 needs to be disassembled or assembled, the wrench 6 in the placing groove 51 is removed, the rotating heads 61 at the two ends of the wrench 6 are cooperated with the notches 218, and then the wrench 6 is rotated, so that the pressing cover 21 can be conveniently disassembled. The wrench 6 is in interference fit with the placing groove 51, and can be clamped in the placing groove 51. When the wrench 6 needs to be used, it can be conveniently disassembled.

[0067] Referring to Figures 1 to 6 the same as that in Embodiment 1, the difference is that a handle locking device 7 is arranged on the handle 5, the handle locking device 7 comprises a button 71 which is slidingly arranged on the handle 5, a locking head 72 which is connected with the button 71, and a pushing member 73 which pushes the locking head 72 to move in the direction of the valve rod 4; a plurality of locking grooves 15 are arranged on the outer side of the valve body 1 and in the circumferential direction of the valve rod 4; and the pushing member 73 pushes the locking head 72 to abut in the locking groove 15.

[0068] A sliding groove 52 is arranged on the handle 5 in the length direction thereof, the button 71 is slidingly arranged in the sliding groove 52, and the locking head 72 is arranged at the bottom of the sliding groove 52.

[0069] In one embodiment, the pusher 73 is a bent spring, one end of which is fixedly connected to the button 71, and the other end of which abuts against the end of the sliding groove 52 away from the valve rod 4, so that the spring can push the button 71 to move towards the valve rod 4, so that the locking head 72 abuts against the locking groove 15, thereby achieving automatic locking of the handle 5, and further achieving automatic locking of the valve rod 4.

[0070] In one embodiment, the pusher 73 is a spring, and the two ends of the spring abut against the end of the sliding groove 52 away from the button 71.

[0071] The automatic locking is achieved by the pusher 73 pushing the locking head 72, which can prevent the valve from being mistakenly opened or closed due to accidental touching, and can also prevent the valve core 3 from rotating due to fluid impact.

[0072] In the utility model, the pipe connecting assembly 2 is arranged at the passage opening, so that the locking cover 23, the pressing cover 21 and the butt joint 22 and other parts can be conveniently disassembled, and the parts in the valve body 1 can be conveniently replaced, and the valve body 1 has the characteristics of installing and disassembling the internal parts; and the valve core 3 in the application is a three-way valve core, so that the direction of liquid flow in the main passage 13 can be switched by rotating the handle 5.

[0073] Embodiment 3: refer to Figures 1 to 6 The structure of the present embodiment is similar to that of embodiment 2, and the difference lies in that, as shown in Figure 6 The handle 5 is provided with a sliding hole 74, the sliding hole 74 is arranged along the length direction of the handle 5, a piston 75 is slidably arranged in the sliding hole 74, the piston 75 and the button 71 are connected through a connecting rod 76, the end of the sliding hole 74 away from the button 71 is communicated with an oil cavity 77, the oil cavity 77 is a rubber oil cavity and can freely stretch and contract. A one-way valve plate 78 capable of rotating towards the oil cavity 77 is arranged in the sliding hole 74, and the one-way valve plate 78 is provided with an oil leakage hole 781. The oil cavity 77 is provided with hydraulic oil.

[0074] In embodiment 2, the pushing force of the pusher 73 always acts on the button 71, so that when the handle 5 is rotated, the hand needs to abut against the button 71 all the time to prevent the button 71 from resetting and locking the handle 5.

[0075] When the handle 5 needs to be rotated, the push button 71 is moved away from the valve rod 4, at this time, the push button 71 also overcomes the force of the pusher 73, and at the same time, the connecting rod 76 pushes the piston 75 to move in the sliding hole 74, at this time, the one-way valve piece 78 is rotated to open, so that the hydraulic oil in the sliding hole 74 moves to the oil cavity 77; after the push button 71 moves to the end of the sliding groove 52 away from the valve rod 4, the hand is released, at this time, when the piston 75 moves to the push button 71 in the process of the pusher 73 pushing the push button 71, the one-way valve piece 78 is closed, so that the hydraulic oil in the sliding hole 74 stops flowing, so that the push button 71 cannot be immediately reset, so that the handle 5 can be rotated without the hand being always abutted on the push button 71. When the handle 5 is rotated to a certain angle, because the one-way valve piece 78 is provided with the oil leakage hole 781, after a period of time, the hydraulic oil enters the sliding hole 74 from the oil leakage hole 781, so that the piston 75 and the connecting rod 76 are reset, at this time, the locking head 72 is again matched with the locking groove 15 to lock the handle 5.

[0076] Therefore, in the application, when the handle 5 is rotated, the hand does not need to be always abutted on the handle 5, only the push button 71 needs to be pushed for the first time, and then the handle 5 can be freely rotated, and after a period of time, the locking head 72 can be abutted in the locking groove 15 to lock the handle 5.

[0077] The above-mentioned embodiments are only the preferred schemes of the application, and do not limit the application in any form, and other variants and modifications are also possible without exceeding the technical schemes recorded in the claims.

Claims

1. A five-way valve, characterized in that it comprises: The valve body contains a valve cavity, and five passages connecting the valve cavity to the outside are provided on the side wall of the valve body. Pipe connection assembly: including a compression cap, a butt joint that mates with the channel opening, and a locking cap that keeps the butt joint abutting against the channel opening; the locking cap is threaded to the outer surface of the channel, the butt joint has a raised ring at the end that abuts against the channel opening, and the locking cap has a limiting ring that mates with the raised ring at the end.

2. The five-way valve according to claim 1, characterized in that, The five connecting ports include four side channels and one main channel; the four side channels are evenly distributed along the circumference, and the main channel is located at a position perpendicular to the four side channels.

3. The five-way valve according to claim 1, characterized in that, The pressure cap is threaded to the inner wall of the channel opening.

4. The five-way valve according to claim 1, characterized in that, A first sealing ring is provided at the end of the pressure cap facing the valve cavity.

5. The five-way valve according to claim 1, characterized in that, A second sealing ring is provided at the end of the pressure cap away from the valve cavity.

6. The five-way valve according to claim 1, characterized in that, The inner wall of the pressure cap at the end away from the valve cavity has at least two opposing notches.

7. The five-way valve according to claim 1, characterized in that, A third sealing ring is provided on the outer wall of the pressure cap.

8. The five-way valve according to any one of claims 1 to 7, characterized in that, The valve body has a mounting hole that communicates with the valve cavity, and the valve stem passes through the mounting hole to connect with the internal valve core; a handle is connected to the end of the valve stem away from the valve core.

9. The five-way valve according to claim 8, characterized in that, The handle has a slot for placing a wrench, and the two ends of the wrench have rotating heads that cooperate with the clamping cap.

10. The five-way valve according to claim 8, characterized in that, A handle locking device is provided on the handle, which includes a button that is slidably disposed on the handle, a locking head connected to the button, and a pusher that pushes the locking head to move towards the valve stem; a number of locking grooves are provided on the outside of the valve body and in the circumferential direction of the valve stem; the pusher pushes the locking head to abut against the locking groove.

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