IT201900002239A1 - SPRAY GUN WITH ACTIVATION MEANS - Google Patents

Description

DESCRIPTION

The present invention refers to a spray gun for irrigating plants, flowers and / or vegetables. In particular, the spray gun is of the type that can be connected to a flexible hose that delivers water, for example connected to a source included in a domestic and / or industrial network.

In the state of the art there are known many embodiments of spray guns which can be mounted, and fluidically connectable, to a flexible tube.

The known spray guns are suitable to be operated by a user who can decide whether to spray the water jet or to inhibit the spray.

Typically known spray guns have complex actuation mechanisms with complex handling, assembly and obviously maintenance. The object of the present invention is therefore to have a spray gun which solves the aforementioned problem typical of the solutions of the state of the art. Specifically, the object of the present invention is to have a spray gun which has actuation means which are easy to handle, to assemble and above all to maintain.

In accordance with the present invention, this object is achieved by the spray gun according to claim 1. Preferred embodiments of the invention are defined in the dependent claims.

The characteristics and advantages of the spray gun mentioned above will be evident from the description given below, given by way of non-limiting example, in accordance with the attached figures, in which:

- Figures 1a and 1b respectively show two perspective views of a spray gun in accordance with a preferred embodiment in which the adjustment element is in a retracted position and in an advanced position;

Figure 2 illustrates a perspective view with separate parts of the spray gun of Figures 1a and 1b;

- figures 3a, 3b, 3c and 3d show some sectional views of the spray gun of figures 1a and 1b, each corresponding to a respective operating configuration;

- Figures 4a and 4b respectively show two perspective views of a spray gun in accordance with a preferred embodiment in which the adjustment element is in a retracted position and in an advanced position;

Figure 5 illustrates a perspective view with separate parts of the spray gun of Figures 4a and 4b;

figures 6a, 6b, 6c, 6d and 6e show some sectional views of the spray gun of figures 4a and 4b, each corresponding to a respective operating configuration;

- figure 7 shows some whole or partial perspective views of some components of the spray gun object of the present invention;

figure 8 shows a view in separate parts of some components of a trigger member included in the spray gun object of the present invention;

figures 9a, 9b and 9c show some section views of a spray gun according to the present invention, in a further preferred embodiment, each corresponding to a respective operating configuration;

- Figures 10a, 10b and 10c show two sectional views of a spray gun according to the present invention, in a further preferred embodiment, each corresponding to a respective operating configuration, and a perspective view of a portion of the barrel of said gun.

In accordance with the attached figures, the reference number 1 generally indicates a spray gun for the irrigation of plants, flowers and / or vegetables.

Specifically, the spray gun 1 object of the present invention can be connected to a flexible hose that delivers water. By "flexible pipe" we mean a commercial pipe that is typically connected to a tap that is fluidly connected to the domestic and / or industrial plumbing network.

The spray gun 1 comprises a gun body 2 inside which a duct 20 extends between an inlet port I, which can be connected to the flexible hose that delivers water, and a main outlet port O1 through which a predefined amount of water.

In accordance with the present invention, the gun body 2 comprises a handle 3 and a barrel 4.

In a preferred embodiment, handle 3 and barrel 4 are mutually joined in one piece, in other words the gun body 2 consists of a single component.

In a preferred embodiment, handle 3 and barrel 4 are two distinct components mutually engaged.

In some variants of construction, the handle 3 consists of the assembly of several parts. In other variants, the handle 3 is a single component.

In some variants of construction, the barrel 4 consists of the assembly of several parts. In other variants the barrel 4 is a single component.

The handle 3 can be grasped by a user and extends along a Y-Y handle axis.

In the handle 3 there is an upper end 30 and a lower end 32, mutually axially spaced.

In correspondence of the lower end 32 the entrance mouth I is obtained. Preferably, the entrance mouth I is located in correspondence with the Y-Y handle axis. Preferably, at the inlet I there is a nozzle that can be engaged from one end of the roll-up tube; preferably, nozzle and roll-up tube can be mutually joined together with a releasable male-female coupling. In accordance with the present invention, the duct 20 has a first section 23 inside the handle 3. Preferably, said first section 23 extends along the handle axis Y-Y.

According to the present invention, the barrel 4 extends along a barrel axis X-X.

The barrel 4 includes along the barrel axis X-X an engagement portion 40 engaged with the upper end 30 of the handle 3, and a second end 42 in which the main outlet mouth O1 is formed.

The duct 20 has a second section 24 inside the barrel 4 fluidically connected with the first section 23. Preferably, said second section 24 extends along the barrel axis X-X.

Preferably, the first section 23 and the second section 24 join at the intersection of the two respective axes.

Preferably, the barrel 4 extends in length between a first end 41 and a second end 42; between the first end 41 and the second end 42 the engagement portion 40 is axially located.

In accordance with the present invention, moreover, the spray gun 1 comprises an adjustment element 5 which extends fitted on said barrel 4 around and parallel to the barrel axis X-X.

The adjustment element 5 comprises a central cavity 50 in which the barrel 4 at least partially houses and a secondary outlet O2. The secondary outlet port O2 corresponds to one end of the cavity 50.

In accordance with the present invention, the adjustment element 5 is axially movable between a retracted position and an advanced position. In accordance with a preferred embodiment, the barrel 4 has a front portion 45 on which the adjustment element 5 is axially movable. Preferably said front portion 45 has a substantially complementary shape to the cavity 50.

In the retracted position, the adjustment element 5 is retracted onto the barrel 4. In this position, the adjustment element 5 has the secondary outlet port O2 axially proximal to the main outlet port O1, in such a way that the spray of outgoing water from the main outlet O1 it has an unchanged trajectory, ie it reaches the external environment with the same trajectory with which it is regulated at the outlet from the main outlet O1. In other words, in the retracted position the spray is not modified by the presence of the adjustment element 5. In other words, in the retracted position, the spray is delivered by the spray gun 1 exclusively at the outlet from the main outlet O1.

Preferably, the adjustment element 5 is axially retracted until it abuts with a stop obtained on the barrel 4; said abutment is placed at the end of the aforementioned section called "front portion 45".

Instead, in the advanced position, the adjustment element 5 is axially cantilevered on the barrel 4, presenting the secondary outlet O2 axially distal to the main outlet O1. In this way, inside the central cavity 50 a regulation chamber 500 is defined which is filled by the water coming out of the main outlet O1. In other words, in this configuration the spray gun 1 delivers water, causing it to flow through the secondary outlet O2. Preferably, the water comes out of the main outlet O1, stops and fills at least partially the regulation chamber 500 and then is delivered through the secondary outlet O2. In other words, the adjustment chamber 500 is a flow slowing chamber. In other words, thanks to the adjustment chamber 500 the jet delivered is homogeneous and laminar.

According to a preferred embodiment, the adjustment element 5 is engaged to the barrel by means of a thread. Preferably, in this embodiment, the axial movement of the adjustment element 5 is obtained by screwing it clockwise or counterclockwise.

In accordance with a preferred embodiment, the adjustment element 5 comprises an annular abutment projection 55 which extends radially towards the X-X barrel axis. Preferably, the annular abutment projection 55 acts as an obstacle to the undisturbed flow of water. In other words, the annular abutment projection 55 has the purpose of forcing the stationing and filling of water in the regulation chamber and to create a homogeneous and laminar jet of water leaving the secondary O2 outlet.

Preferably, the annular abutment projection 55 is obtained on the internal face of the internal cavity 50, in an area proximal to the secondary outlet mouth O2.

Furthermore, according to a preferred embodiment, in the advanced position the secondary outlet O2 and the primary outlet O1 have mutual axial distance between 10 and 150 millimeters. In a preferred embodiment, the secondary outlet O2 and the primary outlet O1 have mutual axial distance between 30 and 120 millimeters. In a preferred embodiment, the secondary outlet O2 and the primary outlet O1 have mutual axial distance between 50 and 90 millimeters.

According to a preferred embodiment, the secondary outlet O2 is wider than the primary outlet O1. Preferably, the annular abutment protrusion 55 also defines a wider space than that defined by the primary outlet mouth O1.

Preferably, the primary outlet O1 defines a circular opening with a diameter of between 4 and 12 millimeters.

Preferably, the annular abutment projection 55 defines a circular opening with a diameter of between 10 and 20 millimeters.

Preferably, the secondary outlet mouth O2 defines a circular opening with a diameter of between 12 and 24 millimeters.

In accordance with a preferred embodiment, the adjustment element 5 comprises a support portion 51, placed in an axial position opposite to the secondary outlet O1, in which said support portion 51 engages the barrel 4 in all of its axial position.

In accordance with a preferred embodiment, the barrel 4, in an axial position proximal to the main outlet O1, on its outer side 4, comprises an annular gasket 450 suitable for being engaged by the adjustment element 5, in particular by the internal wall that delimits the central cavity 50. Preferably, the support portion 51 extends radially to engage the annular gasket 450, performing a stop-stroke upon axial movement. In accordance with a preferred embodiment, a stroke stop groove is formed in the support portion 51 in which the annular gasket 450 with adjustment element 5 in an advanced position is housed.

According to a preferred embodiment of the invention, the spray gun 1 also comprises a spray calibration member 6.

Preferably, the spray calibration organ 6 can be modulated to calibrate the spray of water leaving the main outlet O1 (in particular the shape and intensity of the jet).

The spray calibration member 6 extends parallel to the barrel axis 4 including a stem 62 which extends into the barrel axis 4 within the second section 24.

Said stem 62 can be moved axially. In particular, the position of the stem 62 can be axially calibrated, in such a way that a predefined spray of water leaving the main outlet O1 corresponds to a particular axial position of the stem 62.

The stem 62 comprises a head 620 adapted to be axially arranged in a preferred axial calibration configuration in such a way that a type and shape of the water jet corresponds to its axial position from the main outlet O1. Preferably, the head 620 is moved axially in the calibration configurations and protrudes from the main outlet O1. In other words, typically the head 620 is on the trajectory of the jet and deviates its direction.

In accordance with some preferred embodiments of the jet gun, an axial calibration configuration corresponds to the occlusion of each passage of the main outlet mouth O1. In this preferred embodiment, the head 620 engages the edges of the main outlet O1.

In accordance with a preferred embodiment in which the barrel 4 extends along the barrel axis X-X including the first end 41, the calibration member 6 projects axially from the first end 41 with a knob 61 which can be operated by the user to calibrate the axial position of the stem 62 and consequently of the head 620.

Preferably, the knob 61 is engaged with the stem 62. Preferably, the knob 61 and the stem 62 are integrally connected.

In accordance with a preferred embodiment, said knob 61 can be adjusted in an axial position along the barrel axis X-X by screwing (as shown in the attached figures), engaging a specific thread. However, other preferred embodiments are envisaged, in which the knob 61 can be adjusted by means of axial sliding.

According to a preferred embodiment, the water flows in the second section 24 of the duct 20 outside the stem 61.

According to a preferred embodiment, the stem 61 also has one or more longitudinal grooves that guide the water towards the main outlet O1 parallel to the barrel axis X-X.

According to a preferred embodiment variant, the stem 61 is hollow and the water flows through it to the main outlet O1.

In accordance with this preferred embodiment, the calibration configurations correspond to different forms of water jet delivered; the calibration configurations correspond to a different intensity of the water jet delivered.

Preferably, with the adjustment element 5 in the retracted position, the shape of the jet of water delivered by the spray gun 1 is specifically linked to the way in which the spray calibration member 6 is axially calibrated. On the other hand, with the adjustment element 5 in advanced position the spray calibration member 6 is axially configured in such a way that the position of the head 620 directs the jet against the internal walls which define the central cavity 50 and therefore the adjustment chamber 500.

In other words, the regulating element 5 and the spray calibration member 6 have a synergistic effect which facilitates the filling of the regulating chamber 500. According to a preferred embodiment, moreover, the spray gun 1 comprises a suitable shower head element 7 to deliver a jet with a wide pattern.

In accordance with a preferred embodiment, the shower head element 7 comprises a perforated portion 75 equipped with a plurality of holes through which the jet of water is delivered. Preferably, said perforated portion 75 has a substantially annular shape around the barrel 4.

In particular, the shower head element 7 is fluidically connectable to the second section 24, for example by means of specific transverse fluidic holes 240.

Preferably, in fact, the shower head element 7 is mounted on the barrel 4 and extends annularly with respect to the X-X barrel axis.

Preferably, the shower head element 7 is positioned proximal to the engagement portion 40.

Preferably, the shower head element 7 is mounted on the front portion 45 of the barrel 4.

In other words, the shower head element 7 is distal from the main outlet O1 being axially positioned near the support portion 51 of the adjustment element 5 in the retracted position. In accordance with a preferred embodiment, the shower head element 7 identifies a water collection chamber 70 (annular) which is filled with water to reach the perforated portion 75

In accordance with a preferred embodiment, the shower head element 7 can be axially translated along the barrel axis X-X between a closed position in which the fluidic passage is closed, i.e. the specific transverse fluidic communication holes 240 are closed, between the second section 24 and the water collection chamber 70 and an open position in which the fluidic passage is open, i.e. the specific transverse fluidic communication holes 240 are open, between the second section 24 and the water collection chamber 70 and is therefore delivered water through the perforated portion 75.

Preferably, the delivery through the shower head element 7 is controlled by axially modulating the calibration member 6 in a configuration in which the head 620 occludes the main outlet O1.

According to a variant embodiment, the shower head element 7 is fitted onto the adjustment element 5. Preferably, therefore, the shower head element 7 is moved in an axial direction together with the adjustment element 5. In accordance with this variant of construction, according to the axial position of the adjustment element 5 and according to the configuration of the setting member 6, the water comes out from the secondary outlet O2 after having filled the adjustment chamber 500, or it comes out from the element a shower head 7.

In accordance with a preferred embodiment, the spray gun 1 also comprises actuation means 8 housed in the handle 3 suitable for being pressed to set or prevent the flow of water from flowing.

According to a preferred embodiment, the actuation means 8 are positioned in a special operating cavity 300 obtained in the handle 3.

Preferably, the operating cavity 300 is delimited laterally (transversely) by handle cheeks 310, in which said cheeks extend in length parallel to the handle axis Y-Y.

Preferably, the actuation means 8 comprise a shutter element 80 movable in an axial direction along the handle axis Y-Y between a shutter position and a spray position.

Preferably, said shutter element 80 is housed inside the first section 23 of the duct 20.

In accordance with a preferred embodiment, the shutter element 80, in the shutter position, prevents the flow of water in the first section 23, for example by engaging the walls thereof, while in the spray position it leaves a hole open with the walls of the first stretch 23 through which the water is free to flow.

In accordance with a preferred embodiment, the shutter element 800 is hollow and has a section inside which flows the inlet water from the main inlet I.

Preferably, the shutter element 80 comprises a thrust element 805 (preferably a helical spring) which performs a thrust action that keeps it in the shutter position. The actuation of the drive means 8 by the user is such as to overcome the action of the aforementioned thrust element 805.

According to a preferred embodiment, the actuation means 8 comprise a trigger member 81 operatively connected with the shutter element 80. Preferably, the trigger member 81 has a shape substantially complementary to the opening defined by the operating cavity 300. Preferably, the trigger member 81 is blocked laterally (transversely) by the two handle cheeks 310.

Preferably, the trigger member 81 is operationally connected to the shutter element 80 by means of a control lever 810 suitable for transmitting the movement action to the shutter element 80 which is then moved linearly.

Preferably said control lever 810 is hinged to the rotationally free handle 3. Preferably, inside the operating cavity 300 there are two housing slots 315 suitable for containing specific rotation pins 810 'of the control lever 810.

According to a preferred embodiment, an elastic spring 818 is present and operates between the control lever 810 and the body of the trigger member 81.

Preferably, the trigger member 81 comprises a first end 811 hinged to the handle 3 around which it can be moved in rotation between a rest position in which the shutter element 80 is in a shutter position and a flattened position in which the shutter element 80 is in a spray position.

According to a preferred embodiment, the handle 3 comprises a special transverse slot in which the first end 811 is inserted and once inserted it is rotationally movable.

Preferably, said first end 811 is engaged with the handle 3 being housed in a specially shaped transverse split.

Preferably, said first end 811 is engaged with the handle 3 being housed in special grooves 311 present in the lateral cheeks 310. In other words, the transverse split consists of said grooves 311 mutually aligned.

Preferably, said first end 811 is inserted in the grooves in the transverse direction Z-Z.

Preferably, the first end 811 has transverse projections 811 'suitable for finding accommodation in said grooves 311.

Preferably, once the transverse insertion has been performed, until the respective transverse projections are housed in the grooves 311, the trigger member 81 is rotated. The removal of the trigger organ 81 therefore involves a first rotation operation and then a transverse extraction along the transverse axis Z-Z.

Preferably, the trigger member 81 in a proximal area to the first end 811 comprises a section of such dimensions that the translation in the transverse direction is possible without encountering geometric abutments.

In accordance with a preferred embodiment, the trigger member 81 comprises a second end 812 on which is positioned a hook element 82 suitable for being placed in a coupling position in which it engages the handle 3 to maintain the position over time. squashed.

In other words, once brought into a crushed position, the trigger member 81 is also lockable in this position by means of the hook element 82.

According to a preferred embodiment, the hook element 82 comprises a fulcrum portion 822 hinged to the second end 812 on which the hook element 82 is free to swing between a hooked position and an unhooked position.

In other words, the trigger member 81 comprises a fulcrum housing 8120 in which the fulcrum portion 822 is inserted and once inserted it is rotationally movable. Preferably, the fulcrum portion 822 can be inserted into the fulcrum housing 8120 by inserting it in a transverse direction.

In accordance with a preferred embodiment, the trigger member 81 comprises elastic thrust members 83 engaging the hook element 82 suitable for performing a thrust action on it. Preferably, said elastic thrust members 83 are suitable for keeping the hook element 82 raised.

Preferably, the hook element 82 is suitable for engaging the handle 3 in such a way as to keep the second end 812 also fixed to the gun body 2.

Preferably, the hook element 82 has a T-shaped element, 825, which engages the handle and special locking abutments 35 suitable for configuring the rest positions and in the crushed position.

Preferably, the trigger member 81 is a single component obtained by molding.

Preferably, on the trigger member 81 it is mountable to the hook element 82 once the elastic thrust members 83 are housed therein, and once said group of elements has been assembled, they are mounted to the handle 3 (in the cavity provided therein specifically ), engaging the first end 811 with the handle 3 as described above.

Preferably, the materials of the handle and the trigger member 81 and of the hook element 82 as well as the geometry of the various components prevent assembly and disassembly other than those described above. Preferably, snap-in insertions of the various components are geometrically prevented and inhibited. In addition, the spray gun 1 comprises a control member 9 comprising a valve element 90, inserted in a housing in the gun body 2, in which said control member 9 is fluidically connected with the duct 20 being specially shaped.

Preferably, the control member 9 is transversal with respect to the duct 20 and can be controlled in rotation. Preferably, the control member 9 is housed in a specially shaped valve housing 29. Preferably, said valve housing 29 is orthogonal with respect to the duct 20.

Preferably, the valve element 90 comprises an auxiliary duct 920 whose alignment with the duct 20 defines the flow rate of sprayed water. According to a preferred embodiment, the valve element 90 has a cylindrical shape and can be hooked to the gun body 2 with a bayonet.

Preferably, the valve element 90 comprises two gasket elements 98 mutually transversely spaced apart suitable for preventing any unwanted water leaks.

Preferably, the valve element 90 comprises an elastically yielding abutment element 95 to allow the operations of inserting the valve element 90 into the handle. In accordance with a preferred embodiment, the abutment element 95 can be crushed (pressable) in the operations of insertion of the valve element 90 into the valve housing 29 and is suitable for recovering and maintaining its shape once the element feedback 95 is inserted.

According to a preferred embodiment, the abutment element 95 is suitable for providing the angular travel stops that define the positions of the valve element 90 angularly.

Preferably, the abutment element 95 is positioned outside the handle 3, as shown in the attached figures.

Furthermore, in accordance with a further preferred embodiment, the barrel 4 in proximity to the main outlet O1 comprises a turbulence element 49 suitable for making the water motion turbulent and in this way filling the collection chamber 500 more effectively. .

Preferably, thanks to the turbulence element 49, the collection chamber 500 has a smaller axial dimension.

Preferably, in this embodiment, the barrel 4 also has auxiliary outlets Ox. Innovatively, the spray gun in accordance with the present invention achieves the intended purpose.

Advantageously, the actuation means are simple and reliable to use.

Advantageously, the spray gun is simple to manufacture and assemble.

Advantageously, the spray gun is compact in size. In particular, advantageously, the actuation means are arranged to function effectively while having minimal dimensions.

Advantageously, the spray gun can be completely disassembled in each of its parts, in a simple and intuitive way, making maintenance operations in turn simple and intuitive.

Advantageously, the various components of the spray gun, in particular those relating to the actuation means, are geometrically designed to be mutually engageable by means of specific geometric couplings. Advantageously, specific components are prevented from engaging each other "snap". Advantageously, the spray gun is also suitable for solving the problem of limescale accumulation inside, with consequent clogging (also typical of state-of-the-art solutions). Advantageously, in fact, in all the ducts and in all the components, bottlenecks or bottlenecks such as to have unwanted limescale accumulations are avoided. Advantageously, any limescale contained in the water is dispensed by the spray gun, avoiding its accumulation.

Advantageously, the spray gun in its use is suitable for being configurable in a plurality of dispensing modes. Advantageously, among said modes, the spray gun can also be configured in a configuration in which it is suitable for delivering a high quantity of water, in a localized manner at low intensity with a homogeneous and laminar jet.

Advantageously, in the supply of water to plants and or vegetables, the situation (typical of the solutions of the known art) of having a localized jet is avoided which, being of high intensity, moves the earth below the plant. At the same time, advantageously, in the water supply to plants and / or vegetables, the situation (typical of the solutions of the known art) of having a wide pink jet is avoided, which therefore also wets the plant and its leaves.

Advantageously, the calibration means are simple to operate and allow a calibration of the shape of the jet exiting the main outlet.

It is clear that a person skilled in the art, in order to meet contingent and specific needs, may make changes to the invention described above, all however contained within the scope of protection as defined by the following claims.

Claims (11)

CLAIMS 1. A spray gun (1) for irrigating plants, flowers and / or vegetables, comprising: - a gun body (2) inside which a duct (20) extends between an inlet (I), which can be connected to a flexible hose that delivers water, and a main outlet (O1) through which a predefined amount of water is sprayed, including: i) a handle (3) that can be grasped by a user, which extends along a handle axis (Y-Y), between an upper end (30) and a lower end (32) in which the inlet mouth ( I), in which the duct (20) has a first portion (23) inside the handle (3); ii) a barrel (4) extending along a barrel axis (X-X), between an engaging portion (40) engaged with the upper end (30) of the handle (3), and a second end (42) in the which is the main outlet mouth (O1), in which the duct (20) has a second section (24) inside the barrel (4) fluidically connected with the first section (23); - actuation means (8) housed in the handle (3), in an operating cavity (300) defined laterally by handle cheeks (310), in which said actuation means (8) are suitable for being pressed to set or prevent the flowing water flow, and include: l) a shutter element (80) movable in an axial direction along the handle axis (Y-Y) housed inside the first section (23) of the duct (20) between a shutter position and a spray position; m) a trigger member (81) operatively connected to the shutter element (80), in which the trigger member (81) comprises a first end (811) hinged to the handle (3) around which it can be rotated between a rest position in which the shutter element (80) is in a shutter position and a flattened position in which the shutter element (80) is in a spray position; in which the trigger member (81) can be mounted in the handle by inserting said first end (811) into the handle transversely in such a way that it is housed in grooves (311) specially shaped in the handle cheeks (310) and is subsequently rotated to close access to the operating cavity (300). Spray gun (1) according to claim 1, wherein the trigger member (81) comprises a second end (812) on which a hook element (82) is positioned which is suitable for locking the trigger member (81) to the handle, in which said hook element (82) can be controlled in a coupling position in which it engages the handle (3) to maintain the squeezed position of the trigger member (81) over time. Spray gun (1) according to claim 2, wherein the hook element (82) comprises a fulcrum portion (822) hinged to the second end (812) in a fulcrum housing (8120) on which the hook element (82) is free to swing, in which said fulcrum portion (822) can be inserted into a fulcrum housing (8120) by insertion in a transverse direction. Spray gun (1) according to claim 3, wherein the trigger member (81) comprises elastic thrust members (83) engaging the hook element (82) suitable for carrying out a thrust action on its. Spray gun (1) according to any one of the preceding claims, comprises a control member (9) comprising a valve element (90), inserted in a valve housing (29) in the gun body (2) fluidically connected with the duct (20) specially shaped, in which the control member (9) is transversal with respect to the duct (20) which can be controlled in rotation, in which the valve element (90) comprises an auxiliary duct (920) whose alignment with the duct (20) defines the flow rate of sprayed water. 6. Spray gun (1) in accordance with claim 5, in which the valve element (90) has a cylindrical shape and can be hooked to the gun body (2) with a bayonet. Spray gun (1) according to claims 5 and 6, wherein the abutment element (95) is elastically yielding in such a way as to be crushable in the operations of inserting the valve element (90) into the housing valve (29) and is suitable for recovering and maintaining its shape once the abutment element (95) is inserted in the valve housing (29). Spray gun (1) according to any one of the preceding claims, further comprising an adjusting element (5) which extends fitted on said barrel (4) around and parallel to the barrel axis (X-X) comprising a central cavity (50) in which the barrel (4) and a secondary outlet (O2) are housed at least in part, in which the adjustment element (5) is axially movable between: i) a retracted position, in which the adjustment element (5) is retracted on the barrel (4), presenting the secondary outlet (O2) axially proximal to the main outlet (O1), in such a way that the spray of water leaving the main outlet (O1) has an unchanged trajectory; And ii) an advanced position, in which the adjustment element (5) is axially cantilevered on the barrel (4), presenting the secondary outlet (O2) axially distal to the main outlet (O1), defining at the inside the central cavity (50) a regulation chamber (500) which is filled by the water leaving the main outlet (O1) to flow through the secondary outlet (O2). Spray gun (1) according to claim 8, wherein the adjusting element (5), on the internal face of the internal cavity (50), in a zone proximal to the secondary outlet mouth (O2), comprises an annular abutment projection (55) which extends towards the barrel axis (X-X), suitable to act as an obstacle to the outflow of water. Spray gun (1) according to any one of the preceding claims, further comprising a modulable spray calibration member (6) for calibrating the spray of water leaving the main outlet (O1), in which said member spray calibration (6) extends parallel to the barrel axis (4) including a stem (62) which extends into the barrel axis (4) inside the second section (24) whose axial position can be calibrated, in to which the stem (62) comprises a head (620) suitable to be axially arranged in a preferred axial calibration configuration in such a way that according to its axial position from the main outlet mouth (O1) corresponds a type and shape of the jet of water. Spray gun (1) according to claim 10, wherein the barrel (4) extends along the barrel axis (X-X), also including a first end (41) axially opposite the second end (42) in wherein said calibration member (6) protrudes axially from the first end (41) with a knob (61) operable by the user to calibrate the axial position of the stem (62) and consequently of the head (620).