CA1269541A

CA1269541A - Inline dispersal valve

Info

Publication number: CA1269541A
Application number: CA000519533A
Authority: CA
Inventors: Lloyd H. King
Original assignee: Individual
Current assignee: Individual
Priority date: 1985-10-03
Filing date: 1986-10-01
Publication date: 1990-05-29
Also published as: US4662387A; EP0218481A2; AU582468B2; AU6321986A; EP0218481B1; EP0218481A3; ES2028786T3; DE3683238D1

Abstract

Abstract of the Disclosure An inline dispersal valve is constructed with a chamber into which a material to be dispersed into a fluid stream may be inserted. A first fluid deflector is used to direct fluid away from the fluid stream into the chamber to permit the fluid to absorb the dispersant, and a second fluid deflector, oppositely facing, that directs the fluid back into the fluid stream after it has passed through the chamber. The bottom of the chamber has a pair of openings in a line with each other which have an axis that i substantially normal to the axis of the fluid flow in a main stream. A rotatable plate having a pair of apertures of a specially designed tear drop shape controls the amount of fluid that flows through the chamber in accordance with the amount of available area to the fluid stream due to the alignment of the apertures with respect to inlet and outlet ports, respectively.
The plate which contains the apertures is preferably a circular disc which carries a curved row of rack teeth.
In one embodiment the rack teeth mesh with a spur gear which is coupled to a shaft that has a control knob on its outer end. As the control knob is rotated the spur gear rolls along the curved rack, causing the control plate to rotate. In a second embodiment a control plug is directly attached to the apertures such that when the plug is rotated the amount of fluid exposed to the apertures is increased or decreased directly and a chemical canister which may be keyed to the housing to prevent insertion of improper chemicals into the dispersal valve.

Description

INLINE DISPERSAL VALVE

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Backqround of the Invention The prese~t invention relates to dispersal valves for dispersing mater~als such as bromine and chlorine ~rom solid tablets for use in swimming pools, hot tubs, spas and the like.
Inline dispersal valves for controllably ~-- dispersing material into a fluid stream are show~ in U.S~ patent Nos. 4,270,565 and 4,331,174, both o~ which issued in the name of Lloyd H. King, Sr., the inventvr of . the present application. In these prior lnline dispersal valve~, the control was obtained by lowering and raising a 2a container which had a plurality of apertures in it ~o that :~ more or fewer apertures would be presented to the fluid `~ stream flowing through the pipeline to Which the valve is attached. While ef~ectlve, the adjustment mechanism and the construction of the valve are not aS 8imple or con-; trollable as ~s the valve o the present invention and there~ore, ~or certain applications, the va~Ve of the present invention i9 to be preferred.
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In the Sebald, et al. patent 2,481,882 a 10w deflecting ~tructure is pres~nted to the fluid stream pipeline which deflects this stream t~ward a sight gla~s whexe the fluid stream then flows through the sight glass, reverses direction and passes out through a deflecting portion that faces in the direction opposite to tha fluid flow of the main stream. A plug valve which is rotatable to close off the path into and out of the si~ht glass is coupled ~etween the sight glass and : 10 the main fluid stream.
The present invention employs a ~luid deflec-tor which is inserted into the main fluid stream to deflect the fluid into the chamber. However, the chamber in the present invention contains a solld dispexsant material and the diverted stream flows over the solid material to dissolvs some of it into the stream, and : then merges back in with the main streAm. A 8econd fluid deflector faces in the direction opposite the flow of the stream.
:~ 2G There also i5 a control regulator in the present invention which is designed so tha~ a precise control o the amount o~ fluid flowing ov~r the solid dispersant ! material is obtained. ~he construction of this control regulator o~ the pre-Qent invention i9 designed to provide high efficiency and effectiv~n~ss.
The Russell U~S. paten~ 2, 9~6, g40 shows a pair of fluid tap which sample the liquid in a fluid line in a spool valve in order to shut of tbe flow of ~luid through the fluid taps.
l~he Diederich u.s. patent 3,803,921 shows a probe extending into the flow stream of a pipe. The probe :~ ~

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extends diametrically across the pipa and has the fluid tap located in the probe. The probe ha~ a plurality o~
laterally spaced openings facing the flow to sample the flow. A pipe is located in the probe to remove fluid and a second re~urn pipe is located ~ehind the prob~.
~he Thompson U.S. pate~t 3,6.'5,056 ~huws a single probe that operates to withdraw fluid from the main stream and return the fluid to the main ~tream af~er ~he level of con~amination in the fluid has been m~asuxed.
The Aegidius U.S. patent 3,3g5,495 shows an : apparatus f~r taking an average sampl~ of milk which is proportionately sampled from the yield of khe milking of a cow wherein the probe has a tapered shape.
~he Edwards, et al. patent 2,050,565 shows a proportional ~luid ~eeding device which has a liquid storage tank and a movable float control.
The La~ell pa~ent 3,355,946 shows a pair of pitot tubes in a fluid stream for measuring fluid velocity in terms of pressure differential.
The Cook patent 3,726,304 shows a fertilizer dispenser which has a tank with a bladder in it. Fluid in a pipestream i8 forced again~t the outside o~ the bladder while fertilizer pas~es through a ~ilter and into the inside of the bladder and then out a æeparate flow path into the main water stream.
The ~agner French patent 1,094,421 shows a system ~or incFeasing the pressure of a gas flowing in a fluid ~tream by passing a portion o~ the gas through a ~lower to increase the pressure and then through a regulator and back i~to the ~luid, or gas, stream.

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The aperture of the present i.nvention receive~
a quantity of a solid dispersan~ material in a chamber and includes a pipeline tha~ carries a main fluid stre~m, a first fluid deflec~or ~hat has an inl.et which i8 constructed to direct a portion of the ~luid in the ~ain ~tream through a chamber in which the clispersant material is held and a ~econd fluid deflector which directs the fluid out of ~he chamber after it has wash~d over the solid dispersant ma~erial ~o as to dissolve some of the ~- material into the stream. An outlet directs the secondary ~1;ream back into the main stream with the same direction of flow as the main stream. A control mechani~m is u~ed : which is capable o~ blocking of~ the available secondary ~tream ~low through the ~ir~t and ~ec~nd deflectors and in~o th~ chamber, which is constructed to carefully regu-late the amount of dispersant that is added to the main :~ s~r~am by controlling the available flow area of inlet i~ and outl~3t ports that lead to tbe chamber. ~ecause o its ~:~ 20 sy;nme~ry the invention permi~ use in ei~her flow direction.

Brief Description of the Drawings The present inv~ntion i9 described by refexence to the drawin~s ~ n which:
Fig. 1 i~ a partial cut-away top view of the inline valve of the present inven~ion ~takerl along the line 1-1 of Fig. 3);
Fig. 2 is a top view of the valve with one of the ports ~creened ~tak~n along the lin~ 1-1 of Fig. 3~;
Fig. 3 i a side sectional view o~ ~he valve which shows the pipeline and the dispersant ¢ham~er .
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Fig. 4 is a bottom view o~ the control plate, and control shaft and knob;
Flg. 5 is a partial cross~ectional view of the locking fastener that is ~ormed integrally with the bottom of the di~persant chamber and the control plate;
Pig. 6 i8 a par~ial side cros~-Qectional view that shows alternate version of a closure cap for the valve;
Fig. 7 is a partial side cross-sec~ional view of a further alternate version of a closure cap for the valve;
Fig. 8 iB à par~ial cutaway of a second embodi-ment of the present invention showing overall fluid flow : and general operation;
FigO 9 is a side sectional view of the ~alve of Fig. 8 which shows the dispersant chamber and fluid flow;
Fig. lQ is a vi~w of the plug and hole pattern of plug with 0 ring seal of the embodiment of Fig. 8;
Fig. 11 is a side sectional view o~ valve and chamber with keyed chemical canister inserted and partially cut away of the embodime~t of Fig. 8;
FigO 12 i~ a view of the chemical chamber ~o ~e in~erted into the chamber of the inline disp~rsal valve of ~ig. 8 showing a pre~sure valve and a keyed top;
Fig. 13 iS the inline dispersal valve in a planer projection to illustrate the shape of ~he openings~
Fig. 14 is a view o~ 2 ~res~ure relief valve.

Pescription ~ y -~ An inline dispersal valve for ~olid disp~rsa~t 9 constructed in accordance wi~h the presen~ invention is shown by re~er~nce to the drawings in which ~ig. 1-3 of the dxawings show a disper~al valve 10. ~he dispersal valve 10 includes an input connecting pipe 11, an output connecting pipe 12, and a vertical collar 14, all of w~ich are , , , .., ~, .. ~:, integrally formed a~ one part. The pipes 11 and 12 are of a slightly larger diameter than the pipe that carries the water through the system as shown in Fig. 1 and 2. Th~
input pipe 11 and the outpu~ pipe 12 may-be connected to the system pipe by means of threaded connections, adhesive or any other suitable type of connection. The vertical collar 14 has internal threads formed thereon which mate with threads on a base ring 15 that extends upwardly beyond the upper edge of the collar 14.
The base ring 15 may be secured to~ or integrally for~ed with, an elongated, vertically oriented chamber 17 that holds the material that is ~o be dispersed, which may be bromine or chlorine tablets of the type conven~$onally used for swimming pools, spa~, hot tubs and the like.
The base ring 15 has a palr of raised circular ridge~ 16, 18 which encircle the por~ apertures 19 which have axes ~; normal to the main ~luid stxeam a~d through which the ~luid flows during operation of the system. The ridges 16, 18 are ~emicircular in cross s~ction as shown best in Fig o 3 . Dif ferent length~ of chambers may be inter-changed if different capaci~ies are r~uired, whila employing the same components.
A cont~ol plate 20 i8 illustrated in Fig. 4 which has a pair of teardrop-shaped apertures. The control plate 20 is located below the bottom of the base ring lS so *hat the bottom of th~ base xing also provides the bottom of the dispersant chamber. The amount of fluid that flows through the port apertures 19 is controlled in accordance with the total area that i~ available to fluid ~low as a result of the alignment of the control apertures 21 and the port aperture~ l9o The plate 2Q has a curved gear-rach 23 inserted into it or formed on i~.

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., The adjus~ent o~ the position o ~he control apertures 21 with respect to the port apertures 19 will be described subsequently in more detail. A circular 0-ring 24 is provid~d in a cavity 25 formed on the bottsm of the base ring 15 to provide a seal between the base ring 15 and the irlput and output pipes l l ~ 12 ~ respectiYely .
A locking fastener 40 is integrally formed with the bottom o~ the base ring 15 so that it projects down-wardly between the ridges 16, lB and through an opening in the center of the control plate 20. The control plate 20 is thereby retained in place with sufficient clearanc~
so tha~ the plate may slide over the l~cking structur~
withvut binding as it is rotated to obtain the desired fluid flow con~rol. The details o~ the locking ~astener 40 are de~cribed in more detail 3ubsequently in cs~nection ; with Fig. 5 of the drawings.
: As shown in Figs. 2 and 3, fluid enters the syst~m through the system pipe 13 from the left, where the black arrows indicate the flow of $he fluid. Flow then is deflected through the fluid inlet 42 o~ the inlet pas~ageway 41 hat faces into the fluid flow. The fluid inlet 42 receives the fluid and causes it to be directed upwardly through the left~hand inlet port apert~re 19 into the lower portion of the chamber 17. The fluid then flows over the solid dispersant material 9 which dissolves into the fluid stream in a controlled manner. The amount of dispersant which is tc be dissolved is controlled by ~h areas that are provided by the align-ment of the port apertures 19, and the contro1 apertures 21 in the control plate 20. After flowing over the material ~o b~ dispersed, the fluid flows down again : ~
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as indicated by the black arrows, past the right-hand port outlet aperture 19 and down through the outlet passageway 43 to the fluid outlet 440 whïch faces in the direction away from the incoming fluid. The orie.ntation of the inlet 42 and the outlet 44 produces a high fluid pressure at the inlet and a low fluid pressure at the outlet.
~ he top of the chamber 17 i~ prefexably closed by a cap 50 to prevent fluid from flowing out of it and to prevent gasses from escaping out of ~he feeder. The cap 50 pxeferably has a domed ~ection 52 w~th a rece~s 53 that is formed in the center of the dome, and internal support ribs 54. A downwardly depending sidewall. 55 is formed on the side of cap 50 which has thr~ads that Inate with a top ring 57 that is secured to the chamber walls 17 to lo~k the domed cap 50 to the closure plate 65. An 0-ring 67 is provided in a cavity 69 in the top ring 65 to provide a seal betwee~ the closur~ plate 65 and the t~p ring 57. The rai~sd boss 63 receives a 5UppQrt pin 61 that allows the cap 50 to be supported ~irmly on the .~ 20 closure plate 65.
:~ The manner in which the control plate 20 is s~cured and held into place by the securing mechanism is described in more detail by reference to Fig. S. The control plate 2Q ha~ a central aper~ure 7Q located in it to receive the locking astener 40 whic~ has a pair :~: of feet B0,-~2 which ex~end in oppo~ite directions.
The feet 80~ 82 are joined by a bridge 79 o~ reduced cross-sectional area which permits ~lexing oP the feet ;~ 80, 82 inwardly so as~o allow the aperture 70 o the plate 2~ to slide over them. Ater the plate 20 is positioned over the feet 80, B2 they are released and " .,: , ,~ .

: ~ ;'; ` ' the curved toes BS, 83 spring into engagement with the sloped walls 93, 95 on the bottom o~ the plate 20.
Additional pairs of sloped wall~ 97, 99 m~y be provided to aid the assembly of plate 20. ~he plate may be i~serted either as shown, or in an 180 rever ed `~ position. In order to provide f~r thii~ reversibility, it : may be necessary ~o provide a second gear-rack 23 on the opposite ide of the control plate 20. The heels 81 of ~he feet 80, 82 are joined to~ether by a curved surface ~7 that allows the feet to be resiliently bent in and out without cracking o~ the material, which pre~erably is a plastic or vther xesilient material from which ~he baRe ring 15 is ~ormed.
To control the adjustment of the plate 20, and hence ~he position of th~ tearshaped control apertures 21 relative to the port apertur~s 19l a spur gear 90 i5 provided on the end o~ a sha~t 91 whi~h is connected to a control knob 92. As the control knob is rotated, the plate 20 also rotates so that different amount~ o~ the combined areas o~ the control apertures 21 and the circular port aperture~ lg will be in alignment with each other. The shaft 91 extends to th~ curved gear~rack 23 of the chamber 17 and 1~ mounted for rotatioA ~hQrein.
Fi~. 6 and 7 show alternate embodiments of `
dispersant material-containing chambers, and caps for closing ~hem of~. In Fig. 6 a threaded boss 63 extends upwardly into the reces~ 53 and has an upper rim 100 which substantially closes off ~he recess 53~ A valve seat 102 is lGcated in ~h~ closure member 104 ~nd a ~ 30 pressure release valve 106, which mates with the valve ,~

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~5 seat, is threaded into the threads of the bos. 53 so as to close the Yalve seat 102 when it is threaded fully into the boss, and so as to relieve pressure when the v~lve seat is threaded out of ~he bos~.
An 0-ring 108 is preferably located below the ~ head 110 of the pressure release valve 106 to seal the : space between the ring 100 and the head 110, In Fig. 6 where components are similar to those previously described in Fig. 3 the same reference numerals have been applied, with the understa~ding that these elements are similar to the elements previously described with respect to the ~ame reference numerals~
In the ambodiment of Fig. 7 the chamber 17 i~
shown as having a molded top clo ura structure 1~2. In this in~tance, the domed cap 50 is sealed by an 0-ring 67 that is inserted into the chamber 69, where the chamber 69 is formed in the chamber 17. The closur~ structure ha~ an integrally formed raised boss 114 with a smaller diameter `~, support pin-116 that project~ upwardly from the bo~s 114 so :~ 2Q that the head 118 of the pin substantially fills the top ~ of the recess 53. Vent holes 120, 122 are provided in the -~ closure ~tructure 112, 80 that when the cap 50 is unscrewed the pressure in tha chamber 17 may be relea~ed. The domed ¢ap 50 and the bos~ 114 are sealed by means of a circu~ar 0-ring 124 that surrounds the pin 116.
`~ Referring ~o Figs. 8~12, ~here is shown a second embodiment of ~n inline dispersal valve. In the embodiment of Fig~. 8-12 th~ chemical disper~ant can b~ ~tored in a keyed canister to pr~ve~t inadvertent placing the wrong chemical dispersant into the dispersal valve. A further ~ , ~. .
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advantage of the canister i~ tha ~he dispersant chemicals can be inserted without any bodily contact o~ the operator.
Fig~ 8 of the drawing ~hows a dispersal valve 100 controlled by a rotat~ble plug 101. The disper~al valv~
100 includes an input connecting pipe 11.1, an output con-necting pipe 112 and a v~rtical collar 114, all of which are integrally formed as one part. The input pipe 111 and th~ outpuk pipe 112 may be connected to a system pipe by means of threaded connections, adhesiv~ or any other ~uit-able means. Although one pipe has been designated a~ an input and th~ other as an output the internal ~ymmetry of my valve permits its operation in either direction. Yer~ical collar 114 extends upward to a circular lip 15~tha~ has internal thread~ 116 formed thereon which mate with threads on a cap 115 that threadingly ~ngage with threads 116 ~Fig. 11).
Fig. 9 shows an elongated, ver~ically oriented chamber 117 to hold the dispersant which typically may be bromine or chlorine tablets of the type conventionally u~ed for swimming pool~, spas, hot tubs and the like. If desired a chemical canister having a keyed section which mates to the inside of container can be used to hold the chemical dispersant in chamber 1170 The purpose o~ use of an internal canister i~ ~o prevent the chemical dispersant in the canister from making bodily contact with the operator. Referxing to ~: Figs. 8 and 9 the control plug 101 has an elongated handle 104 ~hat ex~end~ across ~he end o~ plug }01 to permit rotation of plug 101.
~; Typica~ly, plug 101 i8 made with a tapered ;: 30 ~ection as illus~rat~d in ~ig. g. The ~apered section p~rmits : plug 101 ~o be inserted ln~o a mating tapered housing in :

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valve 100. The control plug 101 which i.s located in a tapered mating rece s that is located partly above fluid lîne 142 and partly in fluid line to permit the openings in the plug valve 110 to be in line with the fluid fl~wing through valve 100. The direction o the fluid as it flo~s through : con~rol plug 101 is ~hown by ~he arrow~ in Figs. 8 and ~.
-The amount of fluid that flows through the apertures 119 and 121 i~-controlled in accordance wikh the total area that is available to the fluid flow port apertures 130 and control : 10 plug aperture 121 and port aperture 131 in chamber 114.
Fig. 13 shows the control plug 100 has a pa:rti-cular hole pattern formed in it prior to as~embly as l~hown in the rolled out view of the ~urface o~ plug 100. ~he opening~ 140, 141, and 14~ permit ~luid to flow i~to the left chamber 146 from pipe 142 while the opening 143, 144 and 14S
permit fluid to flow back into pipe 111. Fig. 9 shows a circular wall 147 extends between chambers 146 and 148 to prevent the axial flow of fluid from one chamber to a~other.
~ ~he adjustmen of the posi~ion of the control apertures 121 ;~ 20 with respec~ to ~he~port apertures 131 and control aper~ur~
: 119 with por~ aperture 130 will be d~scribed subsequently in r~ 11. Plu~ 101 l~ulud~ ~ circu~ar 0-ring 124 that is located in a circular cavity 125 formed on the plug valve 110 to provide a fluid se~l between the pluq valve 101 and housing 114. 0-ring 124 comprise~ a two par~ member having a : rubber inner member and an outer teflon t~p. Sufficient clearance is allowed so that plug 101 may rotate.
As ~hown in ~igs. 8 and 9 1uid enter ~he inline dispersal valve 100 throuqh an input connec~ing pipe 111 with the arrows indicating the flow o~ the-fluid upward through opening 142 into chamber 146. Flow then flows through : the port aperture 119 and port aperture 130. The port :

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aperture 119 directs the fluid into cham~er 117 where it ~wirls around a dispersant locat d therein (not shown~.
Th~ amount of dispersant which is to be dissolved or mixed is controlled by the open area~ into one of chamber 117 which are provided hy the alignment of the port apertures 11 with apertures 120 and port aperture 121 with aperture 131.
~fter the fluid flow over the material to b~ dispersed, the fluid flows i~to the port l 1 and port 121 (indicatea by the arrows) and into chamber 148. The fluid that flows in an outl~t aperture which face~ tha direction away from the incoming fluid ~downstream~ Since the orientation o~
the inlet 114 faces upstream and the outlet 143 faces down-stream, it produ~es a flow of fluid from the inl~t to th~
outlet.
: To control or adjust the amount o~ fluid that flows throu~h dispersal valve lO0 one rotates plug valve 101 to adjust the position of the cuntr~l apertures 119 and 121 relative to the poxt apertures openings 130 and 131 in housing 114. A handle 104 i~ provided to permit ro~ation of control plug 104. As control plug lOl is rotated in one direction it increases amount of spen area to chamber 117 and when control plug lOl i8 rotated in the oppo~ite direc-: tion it decreases the amount of open area to chamber 117.
Referxi~g to Fig. ll it shows the top of thechamber 117 covered by a removable Screw cap 155 which preven~s ga~ e3 from escaping out of chamber 117. ~he screw with a domed member 190 ~ cap 115 preferably ha~ a domed section ~2 /for holding the `~ top of a canister-120 in place in chamber 117. A downwardly dependîng side wall 155 locat4d on the side of cap 155 has ~hread~ 116~hat ma~e with a se~ of ~hread~ 116. on housing to ~ecurely hold he domed cap 155 on hou~ing 114.
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Located in a cavity 169 .in cap 115 is an O-ring }67 which formis a fluid seal agai~st tapered a~nul.ar seat seal 150 to preven~ fluid ~rom escaping betweeni threads 116 a~d ~16~. ' The tapered annular seat 150 ls angled i.nward so that when cap 115 is screwed on the 0-ring 167 i~ squeezed inward and wedged ti~htly against the ~urface of ~lat annular seat 150 t~ prevent escape of fluidæ therepast and make it easier to keep the s~at clean.
Fig. 11 and Pig. 12 shows the chemical canister 120 for use in my inve~tion. Pig. 12 ~hows the ca~ister with its top removed; however, in the preferred use of canister the top o~ canister 120 would be permanently secured to canister 120 t~ prevent unauthorized acaess to thei contents of cani~ter 120. In order to accidentally prevent inaerting the wrong chemical into my dispersal valve I provide a keyed shape lR0 in ledge 179 on canister 120. The keyed shape which is a 5}0t that fit~ around a mating keyed male member 181 on housing 117. While the canister 120 permits the operator to install the chemicals into valve 100 without physically touching the che~icals the keyinq of the canister to the housing permits only one shape canister to be inserted into the disper~al valve as each c~nistex for a specific chemical is keyed dif~erently. There~ore, one can be assured that the hazard of inserting an improper chemical into the valve will be virtually eliminated. Fig. 12 ~hows the bottom o~ canister 120 contains a foil covering 171 which is ~ypically adhesively ~astened ~o housing 1. While ~oil is shown, other means could be used to ~eal cani~ter 120.
Be~ore the canister 120 is inserted into a dispersal valve the ~oil 171 is removed to permit fluid to ~nter canister chamber 172.
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Located on the bo~tom of cani~ter 120 is an opening to permit fluid to drain or enter valve 100. While located on top of canister is a ruptur,able seal 175 that permits air to ~n~er canister 120 when s~al 1~5 i~ broken.
Typically seal 175 may be a metal foil or the like or a weakened section of canister 120 that one could pierce out with ~ sharp instrument~
Referring to Fig, 11 and Fiy. 14 there is shown a vertically lidable pressure relief valve lB5 that comprises resilient leg~ 187 and 186 and a resilient memb~r 191 that coact to hold valve in the up position thereby causin~
~he hemi~pheral head member 191 to form sealing engagement around opening 19~. Fig. 14 shows the relief valve ~8S
in the open po~ition with arrows indicating fluid flow pas~ valve lB5. When the 1uid cease~ to ~low past opening 190 the na~ur~l resil~ency in le~ 186 and 187 pull valYe head 191 up to openi~g 190. In the up ao~dition ~ higher ~; pre~ure below ~penin~ 19~ will olo~e the valve 1~5 while a higher pressure aboYe valve 185 will orce valve 185 down as shown in Fig. 14 to thereby permit e~cape of ~luid.
~: Located around the open~ng 190 are a 3erie~ of pegs 189 which prevent the dispersant ~rom forcing valve 185 downward.

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Claims

I claim:

1. An inline dispersal valve for metering the amount of material that is dispersed into a fluid stream comprising:
(a) a chamber having a contoured bottom, said chamber containing a removable canister for holding material to be dispersed into a fluid stream, said canister having a keyed section and said chamber having a keyed section to mate with said keyed section of said canister, said canister having a contoured bottom for mating with said contoured bottom of said chamber;
(b) a closure on said chamber to permit insertion of said canister into said chamber, said closure including a member for holding said contoured bottom of said canister against said contoured bottom of said chamber;
(c) a rotatable plug located in said contoured bottom of said chamber, said rotatable plug having a first opening for controlling, restricting and directing fluid away from the fluid stream into said canister to permit the directed fluid to dissolve a dispersant in said canister into the fluid stream, said rotatable plug having a cylindrical surface for forming rotational engagement with a cylindrical receptacle in said chamber, said rotatable plug having a second opening for controlling, restricting, and directing the fluid containing the dispersant back into the fluid stream.

2. An inline dispersal valve for metering the amount of material that is dispersed into a fluid stream comprising:
(a) a chamber for holding material to be dispersed into a fluid stream, said chamber comprising an input connecting pipe coupled to receive the fluid stream, an output pipe coupled to emit the fluid stream, an inlet port aperture that is located closer to said input pipe than said output pipe, an outlet port aperture that is located closer to said output pipe than said input pipe, said chamber including means for fastening a cap thereto;
(b) a cap for closing said chamber, said cap having means to engage said means for fastening a cap thereto to thereby secure said cap to said chamber.
(c) a pressure relief valve to vent pressure from said chamber into the fluid stream; and (d) a rotatable plug, said rotatable plug having a first opening for directing fluid from the fluid stream through said input port aperture and into said chamber to permit the directed fluid to dissolve a dispersant in said chamber, said rotatable plug further having a second opening for controlling and directing the fluid containing the dissolved dispersant from said chamber through said output port aperture and back into the fluid stream, each said first and second openings including a set of control plug apertures, each said set of control plug apertures having a first adjustment range and a larger adjustment range, said first adjustment range allowing a lesser quantity of fluid through said control plug apertures than said larger adjustment range, said first adjustment range and said larger adjustment range allowing greater quantities of fluid through said control plug apertures as said rotatable plug is rotated from a closed position.

3. The invention of claim 2 including a second pressure relief valve located at the top of said inline dispersal valve, said second pressure relief valve operable lo be opened so as to relieve pressure and disperse pressurized gas or fluid from said chamber.

4. The invention of claim 2 wherein said pressure relief valve comprises a resilient member to form sealing engagement with an opening in said chamber, said pressure relief valve connecting to said chamber to prevent pressurized fluid from the fluid stream from entering said chamber when said first pressure relief valve releases the pressure in said chamber.

5. The invention of claim 2 wherein the first opening is isolated from the second opening in said rotatable plug.

6. The invention of claim 2 wherein said rotatable plug has a tapered cylindrical surface for forming rotational engagement in an opening in said inline dispersal valve.

7. The invention of claim 2 wherein said inline dispersal valve includes an annular tapered sealing seat and a rotatable cap for forming sealing engagement with said annular tapered sealing seat.

8. The invention of claim 2 wherein said first adjustment range includes a range having a narrow, elongated opening and said larger adjustment range includes a range having a larger opening than said narrow, elongated opening.

9. The invention of claim 2 wherein said first adjustment range extends for about 90° around said rotatable plug and said larger adjustment range extends for a subsequent 90°
around said rotatable plug so that upon rotating said rotatable plug from a closed position the fluid contacts said first adjustment range before said larger adjustment range.

10. An inline dispersal valve for metering the amount of material that is dispersed into a fluid stream comprising:
(a) a chamber for holding material to be dispersed into a fluid stream, said chamber comprising an input connecting pipe coupled to receive the fluid stream, an output pipe coupled to emit the fluid stream, an inlet port aperture that has an axis positioned substantially normal to the flow direction of the fluid stream and is located closer to said input pipe than said output pipe, an outlet port aperture that has an axis positioned substantially normal to the flow direction of the fluid stream and is located closer to said output pipe than said input pipe and a tapered, cylindrical receptacle, said chamber including means for fastening a cap thereto;
(b) a cap for closing said chamber, said cap having means to engage said means for fastening a cap thereto to thereby lock said cap to said chamber;
(c) a first pressure relief valve and a second pressure relief valve located in said chamber, said first pressure relief valve operable to be opened so as to relieve pressure and disperse pressurized gas or fluid from said chamber, said second pressure relief valve comprising a resilient member to form sealing engagement with an opening in said chamber, said second pressure relief valve connecting to said chamber to prevent pressurized fluid from the fluid stream from entering said chamber when said first pressure relief valve releases the pressure in said chamber;
(d) a rotatable plug comprising a tapered cylindrical surface for forming rotational engagement in said chamber and matable to said tapered, cylindrical receptacle in said chamber, said rotatable plug having a first opening for directing fluid from the fluid stream through said input port aperture and into said chamber to permit the directed fluid to dissolve a dispersant in said chamber, said rotatable plug having a second opening for controlling and directing the fluid containing the dissolved dispersant from said chamber through said output port aperture and hack into the fluid stream, said rotatable plug located at least partially in the fluid stream.

11. The invention of claim 10 wherein said rotatable plug extends approximately halfway into the fluid stream to permit removal and return of fluid to the fluid stream.