Patent Publication Number: US-2023141018-A1

Title: Foam sprayer with adapter and multiple pressure modes

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims the benefit of priority to U.S. Provisional Patent Application Ser. No. 63/277,010, entitled “Foam Sprayer with Adapter and Multiple Pressure Modes,” filed Nov. 8, 2021, the content of which is hereby incorporated by reference in its entirety. 
    
    
     FIELD OF THE DISCLOSURE 
     The present disclosure relates to a foam sprayer including an adapter configured to attach to a low-pressure fluid source and a high-pressure fluid source. 
     BACKGROUND OF THE DISCLOSURE 
     Foam sprayers are configured to generate foam that is sprayed onto objects such as vehicles for cleaning the objects. Dirt and debris on the objects may be collected by the foam which is removed using a fluid or a cloth. Some foam sprayers are attached to a pressurized fluid source, e.g., a pressure washer, or high-pressure water sprayer, and configured to spray pressurized fluid, such as water, with the foam. The pressurized fluid might provide improved cleaning of the object and facilitate removal of strongly adhered dirt and debris. Other foam sprayers are attached to fluid sources such as a standard garden hose connected to a residential water supply, that do not provide a high-pressure fluid. The low-pressure fluid sources are appropriate for applications where high-pressure fluid could cause damage to the object or where a high-pressure fluid source is not available. However, conventional foam sprayers may not be used with both a high-pressure fluid source and a low-pressure fluid source. As used herein, low pressure refers to a pressure of 120 psi or less and high-pressure refers to a pressure of 500 psi or greater. As a result, people are required to utilize two or more different foam sprayers for applications that require high-pressure and low-pressure spray. Also, conventional foam sprayers may be difficult to attach to or detach from a fluid source. Moreover, the foam sprayers may have complicated settings and be hard to operate. 
     Accordingly, there is a need for a foam sprayer that is configured to attach to a low-pressure fluid source and a high-pressure fluid source and operate in a high-pressure mode and a low-pressure mode. In addition, the foam sprayer should be simple to operate. 
     SUMMARY OF THE DISCLOSURE 
     In one aspect, a foam sprayer includes a body defining a channel, a nozzle attached to the body and configured to emit foam, and an adapter configured to releasably attach to a first fluid source that provides a first fluid at a first pressure. The foam sprayer includes a connector attached to the body and configured to releasably connect the body to the adapter or to a second fluid source that provides a second fluid at a second pressure that is substantially greater than the first pressure. The foam sprayer also includes a mode selection device mounted to the body and configured to switch the foam sprayer between a low-pressure mode and a high-pressure mode. The foam sprayer is configured to generate foam from the first fluid when the foam sprayer is in the low-pressure mode. The foam sprayer is configured to generate foam from the second fluid when the foam sprayer is in the high-pressure mode. 
     In another aspect, a spray system includes a first fluid source configured to provide a first fluid at a first pressure, and a second fluid source configured to provide a second fluid at a second pressure. The second pressure is at least five times greater than the first pressure. The spray system also includes a foam sprayer including a body defining a channel, a nozzle attached to the body and configured to emit foam, and a connector attached to the body. The connector is configured to releasably connect to the second fluid source to allow the second fluid from the second fluid source to flow into the channel of the body. The spray system also includes an adapter configured to releasably attach to the connector when the connector is not attached to the second fluid source. The adapter is configured to releasably attach to the first fluid source and direct the first fluid from the first fluid source through the connector and into the channel of the body. The foam sprayer is configured to operate in a low-pressure mode to generate foam from the first fluid, and operate in a high-pressure mode to generate foam from the second fluid. 
     In yet another aspect, a method of emitting foam from a sprayer includes attaching a first fluid source or a second fluid source to the sprayer. The sprayer includes a body defining a channel, a nozzle configured to emit foam, a connector attached to the body, and an adapter configured to releasably attach to the connector and to the first fluid source to allow a first fluid at a first pressure from the first fluid source to flow into the channel of the body. The connector configured to releasably connect the body to the second fluid source when the adapter is not connected to the connector. The second fluid source provides a second fluid at a second pressure that is greater than the first pressure. The method also includes selecting a low-pressure mode or a high-pressure mode of the sprayer using a mode selection device. The method further includes emitting foam from the sprayer. The sprayer is configured to emit foam from the first fluid when the foam sprayer is in the low-pressure mode. The foam sprayer is configured to emit foam from the second fluid when the foam sprayer is in the high-pressure mode. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate aspects of the disclosure and together with a written description serve to explain some of the embodiments of the disclosure. A brief description of the drawings is as follows: 
         FIG.  1    is a partially schematic view of a spray system according to the present disclosure, the spray system including a foam sprayer, a first fluid source, and a second fluid source; 
         FIG.  2    is a perspective view of one embodiment of the foam sprayer of the system of  FIG.  1   , the foam sprayer including a body and an adapter, and having a low-pressure mode and a high-pressure mode; 
         FIG.  3    is a side view of the foam sprayer shown in  FIG.  2   ; 
         FIG.  4    is an enlarged side view of a portion of the foam sprayer indicated in  FIG.  3   ; 
         FIG.  5    is a top view of the foam sprayer shown in  FIG.  2   ; 
         FIG.  6    is a perspective view of the foam sprayer shown in  FIG.  2   , with the adapter detached from the body of the foam sprayer; 
         FIG.  7    is a top view of the foam sprayer shown in  FIG.  6   , with the adapter detached from the body of the foam sprayer; 
         FIG.  8    is a side view of the foam sprayer shown in  FIG.  6   , with the adapter detached from the body of the foam sprayer; 
         FIG.  9    is a front view of the foam sprayer shown in  FIG.  6   , with the adapter detached from the body of the foam sprayer; 
         FIG.  10    is a sectional view of the foam sprayer shown in  FIG.  6   , taken along section line  10 - 10  of  FIG.  9   , with the adapter detached from the body of the foam sprayer, the body including a positionable valve and a mixing chamber; 
         FIG.  11    is an enlarged sectional view of a portion of the body of the foam sprayer indicated in  FIG.  10   , illustrating the valve in a first position; 
         FIG.  12    is an enlarged sectional view of a portion of the body of the foam sprayer indicated in  FIG.  10   , illustrating the valve in a second position; 
         FIG.  13    is a perspective view of the adapter of the foam sprayer shown in  FIG.  2   ; 
         FIG.  14    is a side view of the adapter shown in  FIG.  13   ; 
         FIG.  15    is a front view of the adapter shown in  FIG.  13   ; 
         FIG.  16    is a sectional view of the adapter shown in  FIG.  13   , taken along section line  16 - 16  of  FIG.  15   ; 
         FIG.  17    is a perspective view of a portion of the spray system shown in  FIG.  1   , illustrating the foam sprayer attached to the first fluid source; 
         FIG.  18    is a perspective view of a portion of the spray system shown in  FIG.  1   , illustrating the foam sprayer attached to the second fluid source; and 
         FIG.  19    is a perspective view a portion of the spray system shown in  FIG.  1   , illustrating the first fluid source attached to the adapter of the foam sprayer. 
     
    
    
     DETAILED DESCRIPTION 
     The embodiments of the present disclosure described below are not intended to be exhaustive or to limit the disclosure to the precise forms disclosed in the following detailed description. Rather a purpose of the embodiments chosen and described is so that the appreciation and understanding by others skilled in the art of the principles and practices of the present disclosure may be facilitated. 
     Turning now to the Figures,  FIG.  1    is a perspective view of one suitable embodiment of a spray system, indicated generally at  100 . For example, the spray system  100  may be configured for spraying an object such as a vehicle with a fluid or a foam for cleaning the object. In embodiments, the vehicle may be an automobile, an aerial vehicle, a watercraft, or any other vehicle. In addition, the foam sprayer  110  is configured to spray other objects such as surfaces, buildings, animals, and structures. 
     The spray system  100  includes a first fluid source  102  configured to provide a first fluid  104  at a first pressure, a second fluid source  106  configured to provide a second fluid  108  at a second pressure, and a foam sprayer  110 . For example, the first fluid source  102  comprises a hose or other conduit for the first fluid  104  to flow through. The first fluid  104  comprises a liquid such as water. The first fluid source  102  is configured to provide the first fluid  104  at a pressure provided by, for example, a municipal water reservoir or other water supply. For example, the first pressure is less than 120 pounds per square inch (psi), such as 120 psi, 110 psi, 100 psi, 90 psi, 80 psi 70 psi, 60 psi or 50 psi. 
     In the illustrated embodiment, the second fluid source  106  includes a pressurized fluid gun  112  (e.g., a pressure washer), a conduit  114 , and a pressure apparatus  116 . The pressure apparatus  116  is configured to increase and regulate the pressure of the second fluid  108 . The pressure apparatus  116  provides the second fluid  108  at a second pressure that is higher than the first pressure of the first fluid  104 . For example, the second pressure is at least 1,000 psi. Accordingly, the second pressure is at least five times greater than the first pressure. The pressure apparatus  116  includes a pump  118  and a tank  120 . The tank  120  contains the second fluid  108 . The pump  118  is configured to pressurize the second fluid  108  in the tank  120  and provide the second fluid  108  to the pressurized fluid gun  112  at the second pressure. The pump  118  may be any suitable pump. In some embodiments, the pump  118  is motorized. In other embodiments, the pump  118  is manually operated (e.g., a hand pump). 
     Referring to  FIGS.  1 - 6   , the foam sprayer  110  includes a body  122 , a nozzle  124  attached to the body  122 , a connector  126  attached to the body  122 , and an adapter  128 . The foam sprayer  110  has multiple pressure modes (e.g., a high-pressure mode and a low-pressure mode) and is configured to attach to the first fluid source  102  or the second fluid source  106 . The adapter  128  is connectable to the connector  126  and is configured to releasably connect to the first fluid source  102  to allow the first fluid  104  from the first fluid source  102  to flow into the foam sprayer  110  through the adapter  128 , as shown in  FIG.  17   . The foam sprayer  110  is able to operate in a low-pressure mode when the adapter  128  and the first fluid source  102  are attached to the foam sprayer  110 . 
     The connector  126  is configured to releasably connect to the second fluid source  106  when the adapter  128  is not attached to the connector  126 , as shown in  FIG.  17   . The connector  126  is configured to connect to the pressurized fluid gun  112  to allow the second fluid  108  from the second fluid source  106  to flow into the foam sprayer  110 . For example, the connector  126  includes a male engagement piece  130  that is inserted into and engages a tip of the pressurized fluid gun  112 . The male engagement piece  130  defines at least one groove  132  that is engaged by the tip of the pressurized fluid gun  112 . The foam sprayer  110  is able to operate in a high-pressure mode when the second fluid source  106  is attached to the foam sprayer  110 . 
     The foam sprayer  110  may have a discrete and compact shape and size. For example, an overall length  134  of the foam sprayer  110  may be in a range from 200 millimeters (mm) to 400 mm. In the illustrated embodiment, the overall length  134  of the foam sprayer  110  is 315 mm. The body  122  and the nozzle  124  have a cumulative length  136  in a range of 150 mm to 250 mm. The adapter  128  has a length  138  in a range of 50 mm to 150 mm. 
     In some embodiments, the nozzle  124  includes one or more nozzle spray tips that are attached to the end of the coupler to control the spray pattern of the first fluid  104  or second fluid  108  that is dispensed from the nozzle  124 . The nozzle  124  may include an adjustment device that provides one or more spray settings, for example a wide spray pattern or a narrow spray pattern. 
     With reference to  FIGS.  3  and  4   , the foam sprayer  110  includes a mode selection device  140  mounted to the body  122 . The mode selection device  140  is configured to switch the foam sprayer  110  between a low-pressure mode and a high-pressure mode. For example, the mode selection device  140  includes a knob  142  and an actuator  144  that are rotatable to switch the foam sprayer  110  between the low-pressure mode and the high-pressure mode. As described in detail herein, the foam sprayer  110  includes a valve  164  (shown in  FIGS.  11  and  12   ) that regulates liquid flow based on the position of the mode selection device  140  such that the foam sprayer  110  is configured to generate foam from the first fluid  104  when the foam sprayer  110  is in the low-pressure mode and generate foam from the second fluid  108  when the foam sprayer  110  is in the high-pressure mode. 
     Referring to  FIGS.  6 - 9   , the foam sprayer  110  includes a reservoir  146  attached to the body  122 . The reservoir  146  is configured to dispense a cleaning agent (e.g. soap) to be mixed with the first fluid  104  or the second fluid  108  within the body  122  to generate foam. In the illustrated embodiment, the reservoir  146  comprises a bottle that is screwed into a collar  148  on a lower portion of the body  122 . The reservoir  146  may be removed from the body  122  for filling or replacement of the reservoir  146  by unscrewing the reservoir  146  from the collar  148 . The reservoir  146  may be any suitable shape or size. In the illustrated embodiment, the reservoir  146  is constructed of plastic and is configured to contain at least 40 ounces (oz) of cleaning agent. In other embodiments, the reservoir  146  may be sized to contain more or less than 40 oz. 
     As shown in  FIGS.  4  and  10 - 12   , the foam sprayer  110  includes an air intake  150 . The air intake  150  is configured to allow air into the body  122  to mix with the cleaning agent and the first fluid or the second fluid. The foam sprayer  110  also includes an intake adjustment device  152  mounted to the body  122 . The intake adjustment device  152  is configured to regulate the amount of air that is allowed into the body  122  through the air intake  150 . For example, the intake adjustment device  152  includes a knob  154  that is rotated to selectively close or open the air intake  150 . 
     As illustrated in  FIGS.  10 - 12   , the body  122  defines a mixing chamber  156  and a channel  158 . The mixing chamber  156  is in fluid communication with the reservoir  146  and the air intake  150 . Also, the mixing chamber  156  includes an inlet  160  located at the connector  126 . The inlet  160  is arranged for the fluid from the fluid source that is connected to the connector  126  to flow into the mixing chamber  156 . The mixing chamber  156  is configured to facilitate mixing of the cleaning agent and the fluid. The channel  158  extends from the mixing chamber  156  to the nozzle  124  at a distal end of the body  122 . During operation, the cleaning agent and the air are mixed with the first fluid  104  or the second fluid  108  and directed along the channel  158  to generate foam that is emitted from the body  122  through the nozzle  124 . The nozzle  124  receives the mixture of the cleaning agent, air, and the first or second fluid  104 ,  108  and channels the mixture to an outlet at the tip of the nozzle  124  where the foam is emitted. In the example, foam is generated from the mixture at least partly within the nozzle  124 . For example, the nozzle  124  includes a foam generating chamber  159  that extends from the channel  158  to the outlet tip of the nozzle  124 . In the illustrated embodiment, the foam generating chamber  159  includes an inner diameter that widens out along the extension of the nozzle  124 . Therefore, the mixture decreases in pressure within the foam generating chamber  159  and the foam generating chamber  159  facilitates the generation of foam. 
     The intake adjustment device  152  is positioned at least partly in or on the air intake  150  and allows adjustment of the airflow into the mixing chamber  156  for mixing with the cleaning agent and the first fluid  104  or the second fluid  108 . The consistency and concentration of the cleaning agent in the foam are at least partially regulated by the intake adjustment device  152  because airflow into the mixing chamber  156  facilitates the cleaning agent being drawn into the mixing chamber  156  and the cleaning agent forming foam with the fluid. In the example, the body  122  includes a stem  162  that extends into the reservoir  146  for drawing cleaning agent from the reservoir  146  into the mixing chamber  156 . 
     Referring to  FIGS.  11  and  12   , the mode selection device  140  is connected to a valve  164  located downstream of the connector  126  and upstream of each of the air intake  150 , the stem  162  that provides the cleaning agent, the mixing chamber  156 , and the channel  158 . The valve  164  regulates liquid flow into the mixing chamber  156  through the inlet  160 . For example, the valve  164  is rotatable between a first position  166  (shown in  FIG.  11   ) and a second position  168  (shown in  FIG.  12   ). In one embodiment, the valve  164  is rotated approximately 90° to switch between the first position  166  and the second position  168 . In other embodiments, the rotation of the valve  164  may be less than or greater than 90 degrees for such operation. The valve  164  is in the first position  166  when the low-pressure mode is selected using the mode selection device  140 . The valve  164  is in the second position  168  when the high-pressure mode is selected using the mode selection device  140 . 
     The valve  164  has a body  170  defining a first channel  172  and a second channel  174 . The first channel  172  and the second channel  174  are perpendicular to each other. The first channel  172  is in fluid communication with the inlet  160  when the valve  164  is in the first position  166 , as shown in  FIG.  11   . The second channel  174  is in fluid communication with the inlet  160  when the valve  164  is in the second position  168 , as shown in  FIG.  12   . The first channel  172  has a larger cross-sectional area than the second channel  174 . For example, in one embodiment, the second channel  174  has a diameter that is no more than 1.5 millimeter (mm) and the first channel  172  has a diameter that is greater than 1.5 mm. In an example, the diameter of the second channel  174  is 1.0 mm and the diameter of the first channel  172  is 3 mm. Accordingly, the first channel  172  is sized for a lower pressure source (e.g., the first fluid source  102 ) and the second channel  174  is sized for a higher pressure source (e.g., the second fluid source  106 ). 
     As a result, the foam sprayer  110  has multiple pressure modes and is able to utilize different fluid sources having different pressures. Moreover, the foam sprayer  110  is simple to operate and the mode selection device  140  and the intake adjustment device  152  provide easy adjustment of the foam sprayer  110 . In addition, the valve  164  and the mode selection device  140  provide a simple and reliable adjustment mechanism. 
     With reference to  FIGS.  13 - 16   , the adapter  128  includes a coupler  176 , a barrel  178 , a handle  180  extending from the barrel  178 , and a threaded bore  182 . The coupler  176  is disposed on an end of the barrel  178  and is configured to engage the connector  126  (shown in  FIG.  8   ). For example, the coupler  176  includes a collar  184 , a sleeve  186  sized to receive the connector  126 , and engagement members  188 . The collar  184  extends around the sleeve  186  and is positionable between a locked position and an unlocked position. For example, the collar  184  slides axially along the sleeve  186  between the locked position and the unlocked position. The collar  184  may be biased toward the locked position. The engagement members  188  are positioned on the interior of the sleeve  186  and are arranged to engage the connector  126  when the connector  126  is positioned within the sleeve  186  and the collar  184  is in the locked position. For example, the engagement members  188  comprise retractable protrusions that extend into the groove  132  (shown in  FIG.  8   ) in the connector  126 . In other embodiments, the adapter  128  may include other couplers  176  without departing from some aspects of the disclosure. 
     The handle  180  extends at an oblique angle relative to the barrel  178  and is sized for the user to grasp the foam sprayer  110 . The threaded bore  182  is disposed at the distal end of the handle  180  opposite the barrel  178  and is configured to threadingly connect to a fluid source (e.g., the first fluid source  102  shown in  FIG.  1   ). The handle  180  includes a trigger  190  for an operator to control fluid flow through the adapter  128  when the fluid source is attached to the threaded bore  182 . 
     Referring to  FIGS.  1 - 12   , the foam sprayer  110  may be assembled in any suitable manner. For example, one suitable method of assembling the foam sprayer  110  includes providing the body  122  that defines the channel  158 . The nozzle  124  is attached to the body  122  and configured to emit foam. In the illustrated embodiment, the body  122  and the nozzle  124  are constructed as separate pieces and are attached together to assemble the foam sprayer  110 . For example, the nozzle  124  is constructed of plastic and the body  122  is constructed of metal. In other embodiments, the body  122  and the nozzle  124  are constructed of the same materials and may be integrally formed as a single piece. 
     The method also includes attaching the connector  126  to the body  122 . For example, in the illustrated embodiment, the connector  126  is metal and is integrally formed with the body  122 . In other embodiments, the connector  126  is formed as a separate piece and attached to the body  122  using welds, fasteners, adhesives, or any other suitable attachment. The adapter  128  is releasably attached to the connector  126  to facilitate the first fluid source  102  attaching to the foam sprayer  110 . In some embodiments, the adapter  128  is packaged or provided with the foam sprayer  110  but is not attached to the body  122  until use. 
     In addition, the method includes attaching the mode selection device  140  to the body  122 . The mode selection device  140  is rotatably mounted to the body  122  and configured to cause the valve  164  to move between the first position  166  and the second position  168  when the mode selection device  140  is switched between the low-pressure mode and the high-pressure mode. For example, the mode selection device  140  includes the knob  142  that causes the valve  164  to move. The knob  142  is attached to the valve  164  by the actuator  144  extending through an opening in the body  122 . 
     In some embodiments, the method includes attaching the reservoir  146  to the body  122 . For example, the reservoir  146  is screwed into the collar  148  of the body  122 . The reservoir  146  dispenses a cleaning agent to the body  122 . 
     In further embodiments, the method includes attaching the intake adjustment device  152  to the body  122 . For example, the intake adjustment device  152  is rotatably mounted to the body  122 . In the illustrated embodiment, rotation of the intake adjustment device  152  selectively opens or closes the air intake  150  and adjusts the concentration of the foam dispersed by the foam sprayer  110 . 
     Referring to  FIGS.  17  and  18   , the foam sprayer  110  is operable in a low-pressure mode ( FIG.  17   ) or a high-pressure mode ( FIG.  18   ). The foam sprayer  110  may include graphics, alpha-numeric characters, lights, or other indicators to facilitate the operator selecting the proper mode. In the illustrated embodiment, the foam sprayer  110  includes illustrations  192  of the fluid sources that correspond to the respective pressure modes. 
     To operate the foam sprayer  110  in the low-pressure mode, the mode selection device  140  is positioned to select the low-pressure mode as shown in  FIG.  17   , and the adapter  128  is connected to the body  122  of the foam sprayer  110 . The first fluid source  102  is connected to the adapter  128 . The trigger  190  of the adapter  128  is actuated to allow the first fluid  104  from the first fluid source  102  to flow into the body  122  of the foam sprayer  110  through the adapter  128 . The first fluid source  102  provides the first fluid  104  at the first pressure. The first fluid  104  is mixed with air and the cleaning agent within the body  122  The mixture of the first fluid  104 , the air, and the cleaning agent flows through the channel  158  and the nozzle  124  and generates foam. The intake adjustment device  152  is adjusted to regulate the air that flows into the body  122  and, thus, the concentration of the foam. The foam is dispersed from the foam sprayer  110  through the nozzle  124 . 
     To operate the foam sprayer  110  in the high-pressure mode, the adapter  128  is removed from the body  122  of the foam sprayer  110  and the pressurized fluid gun  112  of the second fluid source  106  is connected directly to the body  122 . The mode selection device  140  is positioned to select the high-pressure mode as shown in  FIG.  18   . The trigger  198  of the pressurized fluid gun  112  is actuated to allow the second fluid  108  from the second fluid source  106  to flow into the body  122  of the foam sprayer  110  through the pressurized fluid gun  112 . The second fluid source  106  provides the second fluid  108  at the second pressure. The second fluid  108  is mixed with air and the cleaning agent within the body  122 . The mixture of the first fluid  108 , the air, and the cleaning agent flows through the channel  158  and the nozzle  124  and generates foam. The intake adjustment device  152  is adjusted to regulate the air that flows into the body  122  and, thus, the concentration of the foam. The foam is dispersed from the foam sprayer  110  through the nozzle  124 . 
     The pressurized fluid gun  112  of the second fluid source  106  includes a body  194 , a coupler  196 , and a trigger  198 . The coupler  196  is configured to engage the connector  126  of the foam sprayer  110 . For example, the coupler  196  may be similar to the coupler  176  of the adapter  128 . The coupler  196  receives and engages the connector  126 . Suitably, the pressurized fluid gun  112  is a standard apparatus without modifications and the foam sprayer  110  is compatible with existing types of the pressurized fluid gun  112 . In some embodiments, the coupler  196  is a separate piece from the pressurized fluid gun  112  that is provided to facilitate connection of the foam sprayer  110  to the pressurized fluid gun  112 . 
     Referring to  FIG.  19   , the adapter  128  can be used to spray fluid when the adapter  128  is not attached to the body  122  of the foam sprayer  110  (shown in  FIG.  1   ). For example, the adapter  128  is configured to connect to the first fluid source  102  and dispense the first fluid  104  provided by the first fluid source  102  without being attached to the foam sprayer  110 . The first fluid source  102  is attached to the bottom of the handle  180 . The adapter  128  dispenses the first fluid  104  through the coupler  176  when the trigger  190  is pressed. As a result, the adapter  128  serves multiple purposes and facilitates dispensing the first fluid  104  without generating foam. In other embodiments, the adapter  128  is configured to work with other fluid sources such as the second fluid source  106  (shown in  FIG.  1   ) with or without the foam sprayer  110  attached to the adapter  128 . In some embodiments, the adapter  128  includes one or more nozzle spray tips that are attached to the end of the coupler to control the spray pattern of the first fluid  104  that is dispensed from the adapter  128 . The adapter  128  may include an adjustment device that provides one or more spray settings. 
     Compared to conventional spray systems, the spray system of embodiments of the present disclosure has several advantages. For example, embodiments of the spray system include a foam sprayer that is usable with a high-pressure fluid source or a low-pressure fluid source. The foam sprayer has a high-pressure mode and a low-pressure mode. In addition, the foam sprayer includes a connector that is quickly and easily connected to a high-pressure fluid source. Also, the spray system includes an adapter that facilitates connection of a low pressure source and that is configured to dispense low-pressure fluid without the foam sprayer. Moreover, the foam sprayer has a compact shape and size that may provide an improved aesthetic appearance and be easier to handle than other spray systems. 
     Numerous characteristics and advantages of the embodiments described by this document have been set forth in the foregoing description. As various changes, including modifications to shape, and arrangement of parts, and the like, could be made in the above constructions and methods without departing from the scope of the disclosure, it is intended that all matter contained in the above description and shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense. Various modifications, can be made without departing from the spirit and scope of the disclosure. 
     As used herein, the terms “about,” “substantially,” “essentially” and “approximately” when used in conjunction with ranges of dimensions, concentrations, temperatures or other physical or chemical properties or characteristics is meant to cover variations that may exist in the upper and/or lower limits of the ranges of the properties or characteristics, including, for example, variations resulting from rounding, measurement methodology or other statistical variation. 
     When introducing elements of the present disclosure or the embodiment(s) thereof, the articles “a,” “an,” “the,” and “said” are intended to mean that there are one or more of the elements. The terms “comprising,” “including,” “containing,” and “having” are intended to be inclusive and mean that there may be additional elements other than the listed elements. The use of terms indicating a particular orientation (e.g., “top,” “bottom,” “side,” etc.) is for convenience of description and does not require any particular orientation of the item described.