US3777944A - Fluid dispensing apparatus - Google Patents

Abstract

Apparatus, or system, for dispensing a fluid characterized by a container holding the fluid; conduit and means for effecting flow of the fluid from the container to a location where it will be used, the conduit being connected with the container and an interiorly protruding conduit portion; and a gun for dispensing the fluid. The gun is connected with the conduit and has a valve for controlling the flow of the fluid. The valve in the gun is normally biased into a closed position and manually operable into an open position, and is discrete and removable such that once it starts to be unreliable as by leaking, it can be replaced without having to replace the entire gun. Also disclosed are specific fluids and preferred structural embodiments.

Description

United States Patent [191 Brooks FLUID DISPENSING APPARATUS Dec. 11, 1973 ABSTRACT Apparatus, or system, for dispensing a fluid characterized by a container holding the fluid; conduit and means for effecting flow of the fluid from the container to a location where it will be used, the conduit being connected with the container and an interiorly protruding conduit portion; and a gun for dispensing the fluid. The gun is connected with the conduit and has a valve for controlling the flow of the fluid. The valve in the gun is normally biased into a closed position and manually operable into an open position, and is discrete and removable such that once it starts to be unreliable as by leaking, it can be replaced without having to replace the entire gun. Also disclosed are specific fluids and preferred structural embodiments.

5 Claims, 10 Drawing Figures PAtmmmzcl 1 ms 3. 7 77. 944

sum 1 0F 3 A TTOR/VEYS FLUID DISPENSING APPARATUS BACKGROUND OF THE INVENTION l. Field of the Invention This invention relates to apparatus for dispensing a fluid. In particular embodiments, this invention relates to a system for dispensing a fluid; such as, hairspray, shampoo or the like.

2. Description of the Prior Art A wide variety of containers have been employed for dispensing of fluids; for example, fluids for use by hairdressers or by the women in their own homes for treating of the hair. These have ranged from bottles having manually operated pumps through aerosol cans. When aerosol containers were employed the valves and associated elements were made as economically as possible and sometimes would corrode or become inoperable before even a single container of fluid was used. Moreover, the valves were integral with the containers, with no main valve to allow interchanging thereof.

Despite the wide variety of approaches to dispensing of the fluids, the prior art has not provided, as far as I am aware, apparatus, or system, in which a gun is connected with a main container of the fluid by means of conduit so that the particular fluid, such as hairspray or shampoo, can be employed at a location spaced from the container and in which the gun has a removable valve means so that only the inexpensive valve means need be replaced, once the performance of the gun becomes unreliable.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial isometric view of apparatus in accordance with one embodiment of this invention mounted on a chair.

FIG. 2 is a cross sectional view of the container of the embodiment of FIG. 1.

FIG. 3 is a partial cut-away view of a preferred form of the conduit for use in the embodiment of FIG. 1.

FIG. 4 is a partial cross sectional view of the gun of the embodiment of FIG. 1.

FIG. 5 is a partial cross sectional view of the gun of FIG. 4, illustrating the valve means in its normal off position.

FIG. 6 is a partial cross sectional view of the gun of FIG. 4 illustrating the valve means in its on, or dispensing, position.

FIG. 7 is a side elevational view, partly in cross section, illustrating another embodiment of this invention, such as for use with shampoo or the like.

FIG. 8 is a partial cross sectional view of the ,gun of the embodiment of FIG. 7.

FIG. 9 is a partial exploded view of a gun in accordance with another embodiment of this invention.

FIG. 10 is a side elevational view, partly cut away, of the gun of FIG. 9.

DESCRIPTION'OF PREFERRED EMBODIMENTS It is an object of this invention to provide apparatus for dispensing of a fluid that obviates the disadvantages of the prior art. Specifically, it is an object of this invention to provide apparatus for dispensing the fluid in which the fluid is dispensed by a gun at a location spaced from the container of the fluid, the gun having an interchangeable, or removable and replaceable, economical valve means so that maintenance is inexpensive and simple. It is also an object of this invention to solve problems attending the use of a remote gun and interchangeable valve means and not heretofore delineated; the problems, such as skipping being defined hereinafter.

Other objects will become apparent from the detailed descriptive matter hereinafter, particularly when taken in conjunction with the drawings.

Referring to the figures and particularly FIG. 1, theapparatus 11 is installed on achair 13, such as a hairdresser, or beauty operator, might use. As illustrated, thecontainer 15 is connected with the base of thechair 13 by way of straps 17 having easilyunfastenable buckles 19 to facilitate removal and replacement of thecontainer 15. Thecontainer 15 is illustrated as being disposed on the side of achair 13 for clarity of illustration. Ordinarily, it will be hidden from view by being fastened beneath thechair 13. Thegun 21 is illustrated as being supported within aretainer bracket 23. Theretainer bracket 23 may be fastened to the back of thechair 13 as illustrated, or it may be hooked over the top of the chair by means of a suitable thin metallic or plastic strap. In any event, thegun 21 may be readily picked up by the hairdresser to dispense the fluid onto the hair of the customer without having to walk to a storage location and pick up a container such as an aerosol can and return to the customer. Moreover, as will become apparent from the descriptive matter hereinafter, the gun, with its removable valve means may be employed repeatedly and thecontainer 15 changed out as it becomes empty of fluid, a full container being replaced within the straps 17 and connected with thegun 21.

Theapparatus 11 comprises the following elements or subassemblies: acontainer 15 for holding the fluid or fluids; means for effecting flow of the fluid from the container for being dispensed; conduit means such asconduit 27 for conducting the fluid to a location where it will be used; and a gun means such asgun 21 for dispensing the fluid.

Almost anyfluid 29 may be dispensed by the apparatus of this invention as long as it does not clog the apertures and passageways in the valve means. The apparatus was developed and first used for dispensing liquids such as hairspray and shampoo formulations and will be described with particular respect to these formulations. Preferably, the hairsprays that are employed are aqueous-based formulations, such as those employing polyvinyl alcohol and starch. Almost any of the conventional shampoos may be dispensed with the apparatus of this invention.

Thecontainer 15 may comprise any of the conventional containers appropriate for use with the fluid and the means for dispensing the fluid. For example, thecontainer 15 may comprise a conventional atmospheric container where the means for dispensing the fluid comprises a source of a compressed fluid, such as compressed air in an accumulator tank, and an aspirating nozzle, or pump, for sucking the fluid into the conduit to be dispensed from thegun 21. As illustrated, however, thecontainer 15 is a pressurized container for containing both the fluid to be dispensed and a motive fluid such that the aerosol principle can be employed as the means for effecting the flow of the fluid from the container. In one embodiment of this invention, blended halogenated hydrocarbons are employed as the motive fluid, or propellant. Specifically, the motive fluid employed comprises 45 percent Freon 12. As is known, Freon 12 is dichlorodifluoromethane. The exact nature of the container that is employed will depend upon several factors, including the fluid to be dispensed and whether it is heavier or lighter than the motive fluid, and the position in which the container will be employed. As illustrated in FIGS. 1 and 2, thecontainer 15 is employed on its side and thefluid 29 has a greater specific gravity than does themotive fluid 31. As illustrated in FIG. 2, thecontainer 15 has a main valve for controlling the flow of thefluids 29 and 31. In particular, themain valve 25 allows stopping the flow of fluids and changing out the valve means in thegun 21, as described hereinafter. Theconduit 27 is connected by way ofvalve 25 with an interiorly protrudingconduit 33 that extends to the bottom of thecontainer 15. As illustrated, theconduit 33 has a bent portion 35 that will effectively empty thecontainer 15 of thefluid 29, regardless of whether thecontainer 15 is on its side or in a vertical position.

A different type ofcontainer 15 is illustrated in FIG. 7. Therein, a lessdense fluid 37 such as shampoo is to be dispensed, as bymotive fluid 31 in aerosol manner. As illustrated in FIG. 7, theconduit 27 is connected to ashort standpipe 39 for dispensing substantially all of theshampoo 37 above themotive fluid 31.

Theconduit 27 may comprise any of the fluid impermeable conduit that is appropriate to the fluid being dispensed. Ordinarily, the motive fluid presents no problem since it will be a relatively inert fluid that will not attack the material of which theconduit 27 is constructed. Preferably, for dispensing the hairdressing fluid, such as hairspray or shampoo, theconduit 27 comprises a dental hygiene type conduit such as illustrated in FIG. 3. Therein, the conduit has a fluidimpervious liner 41, which will be of a thermosetting plastic or the like that is impervious to attack by and impermeable to lateral flow of the fluid. The liner is disposed concentrically within atube 43. Thetube 43 will be of a material that has sufficient tensile strength to withstand the super atmospheric pressure of the motive fluid and the fluid contained within thecontainer 15.

For example, thetube 43 may be of nylon tubing, poly ethylene tubing or other economical material having the requisite tensile strength to withstand the pressure. For safety anouter covering 45 is provided. As illustrated, theouter covering 45 is of a woven high strength material, such as nylon thread. The covering 45 provides an additional safety factor to prevent rupture of the conduit at the super atmospheric pressure. Theconduit 27 is long enough to reach from thecontainer 15 to the location where the fluid will be employed. For example, theconduit 27 is long enough to reach from the base of thechair 13 to the head of the customer therein. If desired, acentral container 15 may be employed in a beauty shop with a plurality ofindividual conduits 27 extending from a header that is connected with thecentral container 15.

Thegun 21 may take any desired form. For example, it may take the shape of a conventional gun with a trigger and butt. As illustrated in FIGS. 1 and 4, thegun 21 is a relatively linear structure that may be grasped by the hand and be operated by a finger to dispense the fluid comfortably and handily. Referring to FIGS. 4-6, thegun 21 is connected with theconduit 27 as by insertion and clamping a mechanically swagedclamp 47. An adhesive, such as epoxy resin, may be employed also, if desired. Thegun 21 comprises anouter case 49 that is movable longitudinally of theconduit 27. Theouter case 49 has a smoothcylindrical section 51 for fitting into frictional engagement withcap 53. Thecap 53 has an interiorly threadedaperture 55 that engages the exteriorly threadedbody 57 that is connected with thehose 27 by the mechanically swagedclamp 47. Theouter case 49 may be readily slipped from its frictional engagement with thecap 53 and the cap unscrewed from thebody 57 for easy disassembly.

Thegun 21 has a valve means such as thevalve 59 for controlling the flow of the fluid. Thevalve 59 is normally biased into a closed position, as illustrated in FIG. 5, and is manually operable into an open position, as illustrated in FIG. 6. Thevalve 59 is discrete and removable such that once it starts to be unreliable, as by leaking, it can be replaced without having to replace theentire gun 21. Thebody 57 has abore 61 that communicates with the interior of theconduit 27. Thegun 21 includes a nozzle means such as the nozzle, or finger button, 63. Thenozzle 63 has afirst passageway 65 extending therethrough and terminating in adischarge aperture 67.

Thevalve 59 has at least a portion that is disposed in thebore 61, and has a first portion 69 that sealingly engages the nozzle means, such as by an interior passageway 71. The first portion 69 has asecond passageway 73 extending therethrough and in fluid communication with thefirst passageway 65 in thenozzle 63. Thevalve 59 has aninlet aperture 75 that is in fluid communication with thesecond passageway 73. Thevalve 59 has a second portion comprisingresilient washer 77 that sealingly covers the inlet aperture in the normal off" position. Specifically, the resilient washer has an internalannular surface 79 that conformingly and sealingly fits over the inlet aperture orapertures 75 when the resilient washer is flat adjacent the end of thebody 57, as illustrated in FIG. 5. As illustrated, theinlet aperture 75 is disposed in an annular recess, or groove, 84, on thevalve 59 and theresilient washer 77 has its internalannular surface 79 ofa smaller diameter than the valve means so that it is retained in place by the annular recess. Theresilient washer 77 has aperipheral portion 85 that is disposed adjacent and contiguous the end of thebody 57. Biasing means which is inclusive of thespring 81 biases thevalve 59 toward the normal of position. In the off position, theresilient washer 77 sealingly engages the annular shoulder of thevalve 59 and the concentricallyinterior flange 83 of the top 53 to form a fluid impermeable seal that contains the fluid within thebore 61.

As illustrated in FIG. 6, the internalannular surface 79 of theresilient washer 77 is tiltable such that it becomes canted, or inclined, to effect communication between theinlet aperture 75 and thebore 61 when theresilient washer 77 is distorted, as by having thevalve 59 pushed inwardly longitudinally of thebore 61 against the biasing means. Theperipheral portion 85 of theresilient washer 77 is retained adjacent the end of thebody 57 to effect the canting of the internalannular surface 79. Thespring 81 is compressed by the inward movement of thevalve 59 longitudinally of thebore 61, and serves, along with the fluid pressure, to return thevalve 59 to its normal off position when the force on thenozzle 63 is released. The force is indicated by thearrow 86, FIG. 6.

Thevalve 59 is preferably formed of a non-corrosive material such as a thermoplastic material. Thevalve 59 is a precision fit valve such that there are no fluid leaks and such that it can be employed over the life of several containers full of the fluid to be dispensed. Moreover, theresilient washer 77, also is formed of a durable material like the thermoplastic or the synthetic rubber compositions such that the seal that it effects with theinlet aperture 75 is long-lasting and trouble-free. If the fluid has a low enough viscosity, a single inlet aperture may be employed. Preferably, a plurality of inlet apertures are employed where the fluid has appreciable viscosity; for example, as does shampoo or the like. The elements employed in conjunction with the precisionfit valve 59 andresilient washer 77 are made of corrosionresistant materials, like stainless steel. Specifically, thespring 81 is a corrosion-proof" spring; such as, a stainless steel spring, a chrome-plated steel spring, or a copper alloy spring. Thebody 57 will be of a corrosion resistant material such as stainless steel. As indicated hereinbefore, in the prior art aerosol dispensing containers, corrodable materials were employed such that the user was lucky if the valve would last the life of a single container of fluid to be dispensed. As illustrated in FIG. 6, the first portion 69 has annular shoulders 87 thereon. The annular shoulders 87 are disposed such that they make sealing contact with thesmall aperture 89 of thecap 53 to direct the fluid through the respective passageways and out discharge aperture 69, instead of allowing it to escape out of thesmall aperture 89 incap 53.

It is preferred that economical, corrosion resistant materials be employed in the subassemblies also. For example, thecase 49 of the gun may be of economical thermosetting plastic. Thecap 53 may be of suitable plastic having the desired structural strength. For example, it may be machined from nylon; orlon; or other thermoplastic materials, such as acrylonitrilebutadienestryrene copolymer (ABS).

In operation, the interiorly protrudingconduit 33 is emplaced in the container with themain valve 25 before the respective fluids are charged to thecontainer 15. The fluid 29 is emplaced in the container and the container is charged with themotive fluid 31. Themain valve 25 is closed. The charged containers may be shipped to a remote using location. Theconduit 27 and thegun 21 are attached at the shop or place where the apparatus will be employed. Thegun 21 will have been pre-assembled as described hereinbefore. Accordingly, when the operator is ready to use the gun to dispense the fluid 29 from thecontainer 15, he or she depresses thenozzle 63, moving the annular shoulders 87 into contact with thesmall aperture 89, simultaneously distorting theresilient washer 77 to put theinlet aperture 75 into communication with the fluid inbore 61 by canting the internalannular surface 79, as illustrated in FIG. 6. Accordingly, the fluid 29 flows outwardly through theconduit 27 under the force of the motive fluid-31. The fluid 29 will be saturated with themotive fluid 31, but themotive fluid 31 will vaporize at atmospheric pressure. The vaporization of the motive fluid is useful in effecting the aerosol spray of the fluid to be dispensed, increasing the effectiveness of a fluid such as thehairspray 29. After a sufficient quantity ofhairspray 29 has been dispensed onto the hair of the customer, the hairdresser releases the force, indicated byarrow 86; and the biasing means, includingspring 81, returns thevalve 59 to the normal of position, as illustrated in FIG. 5. Accordingly, thehairspray 29 is sealingly contained by thegun 21 until the operator is ready to use it again.

As indicated hereinbefore, another embodiment of the invention is illustrated in FIG. 7. Therein, the fluid 37, such as shampoo, is less dense than and is disposed above themotive fluid 31. Thegun 21 is illustrated in FIG. 8. As can be seen therein, thevalve 59 is very similar to that described hereinbefore except it may have more inlet apertures if the fluid 37 is more viscous than the fluid 29. Thevalve 59 is disposed in thebody 57 which is the same as described hereinbefore. To facilitate dispensing theshampoo 37, however, anozzle 93 is employed that differs slightly from thenozzle 63. Specifically, thenozzle 93 has itsfirst passageway 65 disposed axially within apivotal member 95. Themember 95 comprises a nylon cap that fills theaperture 97 innozzle 93 and contains atubular structure 99 disposed about thefirst passageway 65; thetubular structure 99 being formed of a relatively flexible thermoplastic material such that it can be pivoted by an inwardly-directed pressure, as byfinger 101, shown in dashed lines.

In operation, the embodiment of FIGS. 7 and 8 functions substantially as described hereinbefore except that the interiorly protruding conduit is ashort standpipe 39. As illustrated, theshampoo 37 is saturated with the vapor phase of themotive fluid 31 such that it emerges as afoam 103 that is most effective in cleaning and shampooing the hair or the like.

Another embodiment of this invention has been found helpful in preventing skipping in the spraying of certain fluids. The term skipping" defines the phenomenon wherein themotive fluid 31 like hairspray continues to spray without spraying thefluid 29. The reasons why skipping occurs and why this embodiment is effective to prevent it is not exactly clear. A theory is offered in explanation only, not in limitation, in connection with FIG. 10 later hereinafter.

Referring to FIG. 9, thegun 21 has theouter case 49, thecap 53, theconduit 27, thebody 57, the mechanically swagedclamp 47, thevalve 59, and thenozzle 63. Aninsert 109 is provided for insertion within an enlarged, single-diameter bore 61, however. Theinsert 109 haslip 111 and a seal, such as o-ring 113, for effecting a seal with theresilient washer 77 and the end of thebody 57. Theinsert 109 has a body portion 1 15 defining aninternal bore 61 that has the same shape and different portions for receiving thespring 81 and a part of thevalve 59. Thebody portion 115 has anaperture 117 communicating between the exterior and the interior thereof; and has a stinger, or dip tube, 119. Thestinger l 19 is connected with thebody portion 115 and extends for an appreciable distance downwardly interiorly of theconduit 27. Thestinger 119 has an axial passageway that communicates with the internal bore. It is theorized that a gas cap, or vapor lock, ofgas 121 may form in normal dispensing operation because of dual-fluid flow phenomena and that skipping occurs when the gas cap becomes sufficiently large that it excludes the fluid 29; which may be, as indicated, in the form of propellant-saturated droplets ofliquid 123. Thestinger 119 extends a distance downconduit 29 such that it will continue to pick up and conduct the fluid 29 even though the gas cap has occurred. The distance may be, for example, from about 5 inches to a foot or more. Meanwhile, theaperture 117 continues to bleed off the accumulated gas and mix it with the fluid 29 to cause the gas cap to decrease without causing skipping.

The operation of the embodiment of FIGS. 9 and 10 is, to all external appearances, the same as described hereinbefore with respect to FIGS. 1-6.

Although this invention has been described with a certain degree of particularity, it is understood that the present disclosure has been made only by way of example and that numerous changes in the details of construction and the combination and arrangement of parts may be resorted to without departing from the spirit and the scope of the invention.

What is claimed is:

1. Apparatus for dispensing a fluid comprising:

a. container for holding said fluid; said container being capable of sustaining superatmospheric pressure and having a main valve for shutting off the flow of said fluid such that a valve means in a gun means can be changed without emptying said container;

b. means for effecting flow of said fluid from said container for dispensing thereof; said means for effecting flow of said fluid from said container comprising a motive fluid stored in said container at superatmospheric pressure in conjunction with said fluid;

c. conduit means for conducting said fluid to a location where it will be employed; said conduit means being connected with said container and having a first conduit protruding interiorly of said container; said conduit means having an inner liner that is impervious to said fluid and connected with said first conduit; said conduit means having a high strength outer hose enclosing said inner liner for preventing bursting and cold flow thereof; and

d. gun means for dispensing said fluid; said gun means being connected with said conduit means; said gun means comprising:

a cap having an internally threaded aperture; an outer case adapted to conformingly fit said cap; a body connected with said conduit means and having a bore communicating with the interior of said inner liner of said conduit means; said body being of corrosion resistant material and including: A. an externally threaded portion threadedly connected with said internally threaded aperture of said cap; and B. a protrusion having a peripherally corrugated exterior for sealing connection with said conduit means;

nozzle means having a first passageway extending therethrough and terminating in a discharge aperture;

valve means having a first portion sealingly engaging said nozzle means and having a second passageway extending therethrough and communicating with said first passageway; said valve means having at least one inlet aperture communicating with said second passageway and penetrating laterally of said body; said valve means also having a second portion sealingly covering said inlet aperture in a normal of position; and biasing means biasing said second portion toward said normal of position; said second portion being movable into a second and on" position responsive to movement against said biasing means for controllably dispensing said fluid; said first and second portions of said valve means being easily and inexpensively replaceable such that once said valve means starts to be unreliable in operation, as by leaking, it can be replaced without having to replace the entire gun means; and

sealing means for sealingly connecting said protrusion with said conduit means; said sealing means comprising an adhesive material and a crimped metallic fitting compressing said inner liner and said outer hose against said corrugated exterior of said protrusion for maintaining the sealing connection and holding said fluid under said superatmospheric pressure.

2. The apparatus of claim 1 wherein said fluid is more dense than said motive fluid and said interiorly protruding conduit comprises an elongate conduit that extends to the bottom of said container in the position in which it will be employed for emptying said fluid as the lower layer of fluid in said container.

3. The apparatus of claim 1 wherein said fluid is less dense than said motive fluid and said interiorly protruding conduit comprises a short standpipe such that it will dispense said fluid as the upper layer above said motive fluid.

4. The apparatus of claim 1 wherein said conduit means comprises dental hygiene hose with an impervious inner liner.

5. Apparatus for dispensing a fluid comprising:

a. container holding said fluid;

b. means for effecting flow of said fluid from said container for dispensing thereof;

c. conduit means for conducting said fluid to a location where it will be used; said conduit means being connected with said container and having a conduit protruding interiorly of said container;

d. gun means' for dispensing said fluid; said gun means comprising:

i. a body connected with said conduit means and having a bore communicating with the interior of said conduit means;

ii. nozzle means having a first passageway extending therethrough and terminating in a discharge aperture for discharging of a fluid; and

iii. valve means for controlling the flow of said fluid; said valve means being normally biased into a closed position and manually operable into an open position; said valve means having a first portion sealingly engaging said nozzle means and having a second passageway extending therethrough and communicating with said first passageway; said valve means having at least one inlet aperture communicating with said second passageway; said valve means being disposed in said bore of said body; said valve means also having a second portion sealingly covering said inlet aperture in a normal off position; and biasing means biasing said second portion toward said normal off position; said second portion being movable into a second and on position responsive to movement against said biasing means for controllably dispensing said fluid; said first and second portions of said valve means being easily and inexpensively replaceable such that once said gun means starts to be unreliable in operation, as by leaking, it can be replaced without having to replace the entire gun means; and

9 10 e. an insert to prevent skipping; said insert having a having a stinger that extends downwardly within body portion inserted within said bore of said body Said conduit means below Said bore of Said body for and defining an internal bore therewithin; and having an aperture communicating from the exterior to the interior of said body portion; said insert also 5 alleviating problems with skipping.

Claims (5)

1. Apparatus for dispensing a fluid comprising: a. container for holding said fluid; said container being capable of sustaining superatmospheric pressure and having a main valve for shutting off the flow of said fluid such that a valve means in a gun means can be changed without emptying said container; b. means for effecting flow of said fluid from said container for dispensing thereof; said means for effecting flow of said fluid from said container comprising a motive fluid stored in said container at superatmospheric pressure in conjunction with said fluid; c. conduit means for conducting said fluid to a location where it will be employed; said conduit means being connected with said container and having a first conduit protruding interiorly of said container; said conduit means having an inner liner that is impervious to said fluid and connected with said first conduit; said conduit means having a high strength outer hose enclosing said inner liner for preventing bursting and cold fLow thereof; and d. gun means for dispensing said fluid; said gun means being connected with said conduit means; said gun means comprising: a cap having an internally threaded aperture; an outer case adapted to conformingly fit said cap; a body connected with said conduit means and having a bore communicating with the interior of said inner liner of said conduit means; said body being of corrosion resistant material and including: A. an externally threaded portion threadedly connected with said internally threaded aperture of said cap; and B. a protrusion having a peripherally corrugated exterior for sealing connection with said conduit means; nozzle means having a first passageway extending therethrough and terminating in a discharge aperture; valve means having a first portion sealingly engaging said nozzle means and having a second passageway extending therethrough and communicating with said first passageway; said valve means having at least one inlet aperture communicating with said second passageway and penetrating laterally of said body; said valve means also having a second portion sealingly covering said inlet aperture in a normal ''''off'''' position; and biasing means biasing said second portion toward said normal ''''off'''' position; said second portion being movable into a second and ''''on'''' position responsive to movement against said biasing means for controllably dispensing said fluid; said first and second portions of said valve means being easily and inexpensively replaceable such that once said valve means starts to be unreliable in operation, as by leaking, it can be replaced without having to replace the entire gun means; and sealing means for sealingly connecting said protrusion with said conduit means; said sealing means comprising an adhesive material and a crimped metallic fitting compressing said inner liner and said outer hose against said corrugated exterior of said protrusion for maintaining the sealing connection and holding said fluid under said superatmospheric pressure.

2. The apparatus of claim 1 wherein said fluid is more dense than said motive fluid and said interiorly protruding conduit comprises an elongate conduit that extends to the bottom of said container in the position in which it will be employed for emptying said fluid as the lower layer of fluid in said container.

3. The apparatus of claim 1 wherein said fluid is less dense than said motive fluid and said interiorly protruding conduit comprises a short standpipe such that it will dispense said fluid as the upper layer above said motive fluid.

4. The apparatus of claim 1 wherein said conduit means comprises dental hygiene hose with an impervious inner liner.

5. Apparatus for dispensing a fluid comprising: a. container holding said fluid; b. means for effecting flow of said fluid from said container for dispensing thereof; c. conduit means for conducting said fluid to a location where it will be used; said conduit means being connected with said container and having a conduit protruding interiorly of said container; d. gun means for dispensing said fluid; said gun means comprising: i. a body connected with said conduit means and having a bore communicating with the interior of said conduit means; ii. nozzle means having a first passageway extending therethrough and terminating in a discharge aperture for discharging of a fluid; and iii. valve means for controlling the flow of said fluid; said valve means being normally biased into a closed position and manually operable into an open position; said valve means having a first portion sealingly engaging said nozzle means and having a second passageway extending therethrough and communicating with said first passageway; said valve means having at least one inlet aperture communicating with said second passageway; said valve means being disposed in said bore of said body; said valve means also having a second portion sealingLy covering said inlet aperture in a normal ''''off'''' position; and biasing means biasing said second portion toward said normal ''''off'''' position; said second portion being movable into a second and ''''on'''' position responsive to movement against said biasing means for controllably dispensing said fluid; said first and second portions of said valve means being easily and inexpensively replaceable such that once said gun means starts to be unreliable in operation, as by leaking, it can be replaced without having to replace the entire gun means; and e. an insert to prevent skipping; said insert having a body portion inserted within said bore of said body and defining an internal bore therewithin; and having an aperture communicating from the exterior to the interior of said body portion; said insert also having a stinger that extends downwardly within said conduit means below said bore of said body for alleviating problems with skipping.

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