CA2001627A1 - Pilot operated water valve for livestock trough - Google Patents
Pilot operated water valve for livestock troughInfo
- Publication number
- CA2001627A1 CA2001627A1 CA 2001627 CA2001627A CA2001627A1 CA 2001627 A1 CA2001627 A1 CA 2001627A1 CA 2001627 CA2001627 CA 2001627 CA 2001627 A CA2001627 A CA 2001627A CA 2001627 A1 CA2001627 A1 CA 2001627A1
- Authority
- CA
- Canada
- Prior art keywords
- valve
- water
- disc
- chamber
- trough
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Abstract
ABSTRACT
A main pilot operated valve for automatically regulating the supply of water to a livestock watering trough. The main valve comprises a valve body with an extension projecting downwardly from its underside and housing a small float actuated pilot valve. Both valves are located at one end of the trough. When the water level in the trough begins to drop due to consumption by the animals, the small pilot valve starts to open and bleeds a small stream of water therethrough from the main pilot operated valve. This serves to avoid water hammer and chatter and facilitates discharge of sand and other debris. As the water level drops about 3/4 inch, a diaphragm shifts inside the main pilot operated valve, discharging water from that valve at full supply line pressure and flow of 20 gallons per minute until full level in the trough is restored.
A main pilot operated valve for automatically regulating the supply of water to a livestock watering trough. The main valve comprises a valve body with an extension projecting downwardly from its underside and housing a small float actuated pilot valve. Both valves are located at one end of the trough. When the water level in the trough begins to drop due to consumption by the animals, the small pilot valve starts to open and bleeds a small stream of water therethrough from the main pilot operated valve. This serves to avoid water hammer and chatter and facilitates discharge of sand and other debris. As the water level drops about 3/4 inch, a diaphragm shifts inside the main pilot operated valve, discharging water from that valve at full supply line pressure and flow of 20 gallons per minute until full level in the trough is restored.
Description
2al~627 PILOT OP~RATED WATER VALVE FOR LIVESTOCK TROUGH
The present invention relates to fountains or troughs for watering livestock and, more specifically, to a novel pilot operated valve that compensates quickly in response to a drop in water level in the *rough.
~ ivestock watering fountains, generally called troughs, have been known for many years and are widely used. They typically consi~t o~ a trough with a water intake line controlled by a ~ ;
float operated inlet valve. Such arrangements have performed heretofore with varying degrees of success. These valves are slow to respond even when there i8 a substantial drop in the water level of the trough. Many of them are ~usceptible to malfunctioning due to sand and other debris entrained in the water supply line to the trough.
The following prior art patents illustrate the state of the art of pilot operated valves for livestock troughs or analogous applications:
U.S. Patent ~o. Patentee 3,145,728 - Sterrett et al.
3,195,565 - Mackie 3,310,065 1 _ Godshalk 3,385,316 - Couffer, Jr. ;~
4,064,895 - Borgen et al.
4,352,371 - Walters . :. ,~, 4,470,371 - Strickland ~, ::''":' . , ~
,,.',',.'.~,', 20~6~7 SUMMARY OF THE INVENTION
One object of the present invention i5 to provide a pilot operated valve for watering livestock thAt compensates quickly in re~ponse to even a small drop in water level in the trough.
Another object of the invention is to provide a pilot operated valve of the character set forth above that maintains a ;
high level of water in the trough notwithstanding substantial demànd by the livestock.
A further object of the invention is to provide a pilot operated valve and small float that take substantially less avallable drinking area in the trough, yet provide substantially more water in a given time than valves of the type heretofore known.
Still another object of the invention is to provide a pilot operated valve of the type set forth above constructed so as to relieve the water hammer frequently associated with pilot operated devices.
.' .', :........
A further object is to provide a pilot operated valve of the , .: .
foregoing type mounted on the underside of the entering water supply line and having a downward vertical path that quickly clears itself of sand and other debris entrained in the supply line.
Still another object is to provide a pilot operated valve for a livestock trough that is simple in construction, particularly reliable in operation, and has a high capacity for rapidly delivering water to the trough.
i2~
The foregoing is accomplished by constructing the aforesaid pilot operated valve with a main valve body connected directly to a water supply line; a diaphragm in the main body having a central aperture communicating between an upper chamber and a lower chamber in said body; a float actuated lever pivotally mounted in a housing integral with and below said main body; a float connected to the projecting end of said float lever; a small pilot valve in said housing below said main body and opened by ~aid float lever upon lowering of the water level in said trough; said opening of said small pilot valve initially bleeding a small stream of water from said lower chamber in said main body and then causing ~aid diaphragm to open and discharge water at full supply line pressure from said main valve body into said trough.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a perspective view of an animal watering trough embodying the present invention with the compact pilot operated water valve mounted adjacent one end of said trough.
Fig. 2 is an enlarged plan view, partially in horizontal ~ection, showing the interior of the main body of the pilot operated valve.
Fig. 3 is an enlarged vertical sectional view of the pilot operated valve taken in the plane of line 3-3 in Fig. 2. ~
Fig. 4 is a view of said valve similar to Fig. 3 but at a ; ~;
slightly reduced scale showing said valve filled with water and the lever in the trough-full position. ~ , ;
, :,' , '':'~,, , ...',' ,~..~,~'", -3- ~ ~
~0~627 , ~ ,., Fig. 5 shows said valve in condition where the water level has dropped sufficiently to bleed a slight amount of water into the trough from the small pilot valve.
Fig. 6 shows said valve where the water level has dropped -~ufficiently to shift the diaphragm away from the main supply port and discharge a high volume of water into said trough.
Fig. 7 BhOWB said valve shifting toward closure as the water level in the trough is reaching its high level.
Fig. 8 iB an exploded perspective view illustrating the components of said pilot operated water valve disassembled.
While the present invention is susceptible of various modifications and alternative constructions, there is no intention to limit the invention to the specific form illustrated and de~cribed herein. On the contrary, the intention is to cover- ~
all modiflcations and alternative constructions falling within~ ;
the spirit and scope of the invention as set forth in the appended claims.
DETAILED DESCRIPTION OF THE INVENTION
Referring more specifically to Figs. 1-8, the invention is there exemplified in a main pilot operated valve 10 for automatically regulating the supply of water to a livestock watering trough 11. The valve 10 comprises a valve body 12 with an extension 14 projecting downwardly from its underside and ~ -which houses a small pilot valve 15. Water is conducted to the valve 10 and pilot valve 15 via supply line 16 and manually actuated valve 18 (Fig. 1~
' ' .',," ~:
-4~
The present invention relates to fountains or troughs for watering livestock and, more specifically, to a novel pilot operated valve that compensates quickly in response to a drop in water level in the *rough.
~ ivestock watering fountains, generally called troughs, have been known for many years and are widely used. They typically consi~t o~ a trough with a water intake line controlled by a ~ ;
float operated inlet valve. Such arrangements have performed heretofore with varying degrees of success. These valves are slow to respond even when there i8 a substantial drop in the water level of the trough. Many of them are ~usceptible to malfunctioning due to sand and other debris entrained in the water supply line to the trough.
The following prior art patents illustrate the state of the art of pilot operated valves for livestock troughs or analogous applications:
U.S. Patent ~o. Patentee 3,145,728 - Sterrett et al.
3,195,565 - Mackie 3,310,065 1 _ Godshalk 3,385,316 - Couffer, Jr. ;~
4,064,895 - Borgen et al.
4,352,371 - Walters . :. ,~, 4,470,371 - Strickland ~, ::''":' . , ~
,,.',',.'.~,', 20~6~7 SUMMARY OF THE INVENTION
One object of the present invention i5 to provide a pilot operated valve for watering livestock thAt compensates quickly in re~ponse to even a small drop in water level in the trough.
Another object of the invention is to provide a pilot operated valve of the character set forth above that maintains a ;
high level of water in the trough notwithstanding substantial demànd by the livestock.
A further object of the invention is to provide a pilot operated valve and small float that take substantially less avallable drinking area in the trough, yet provide substantially more water in a given time than valves of the type heretofore known.
Still another object of the invention is to provide a pilot operated valve of the type set forth above constructed so as to relieve the water hammer frequently associated with pilot operated devices.
.' .', :........
A further object is to provide a pilot operated valve of the , .: .
foregoing type mounted on the underside of the entering water supply line and having a downward vertical path that quickly clears itself of sand and other debris entrained in the supply line.
Still another object is to provide a pilot operated valve for a livestock trough that is simple in construction, particularly reliable in operation, and has a high capacity for rapidly delivering water to the trough.
i2~
The foregoing is accomplished by constructing the aforesaid pilot operated valve with a main valve body connected directly to a water supply line; a diaphragm in the main body having a central aperture communicating between an upper chamber and a lower chamber in said body; a float actuated lever pivotally mounted in a housing integral with and below said main body; a float connected to the projecting end of said float lever; a small pilot valve in said housing below said main body and opened by ~aid float lever upon lowering of the water level in said trough; said opening of said small pilot valve initially bleeding a small stream of water from said lower chamber in said main body and then causing ~aid diaphragm to open and discharge water at full supply line pressure from said main valve body into said trough.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a perspective view of an animal watering trough embodying the present invention with the compact pilot operated water valve mounted adjacent one end of said trough.
Fig. 2 is an enlarged plan view, partially in horizontal ~ection, showing the interior of the main body of the pilot operated valve.
Fig. 3 is an enlarged vertical sectional view of the pilot operated valve taken in the plane of line 3-3 in Fig. 2. ~
Fig. 4 is a view of said valve similar to Fig. 3 but at a ; ~;
slightly reduced scale showing said valve filled with water and the lever in the trough-full position. ~ , ;
, :,' , '':'~,, , ...',' ,~..~,~'", -3- ~ ~
~0~627 , ~ ,., Fig. 5 shows said valve in condition where the water level has dropped sufficiently to bleed a slight amount of water into the trough from the small pilot valve.
Fig. 6 shows said valve where the water level has dropped -~ufficiently to shift the diaphragm away from the main supply port and discharge a high volume of water into said trough.
Fig. 7 BhOWB said valve shifting toward closure as the water level in the trough is reaching its high level.
Fig. 8 iB an exploded perspective view illustrating the components of said pilot operated water valve disassembled.
While the present invention is susceptible of various modifications and alternative constructions, there is no intention to limit the invention to the specific form illustrated and de~cribed herein. On the contrary, the intention is to cover- ~
all modiflcations and alternative constructions falling within~ ;
the spirit and scope of the invention as set forth in the appended claims.
DETAILED DESCRIPTION OF THE INVENTION
Referring more specifically to Figs. 1-8, the invention is there exemplified in a main pilot operated valve 10 for automatically regulating the supply of water to a livestock watering trough 11. The valve 10 comprises a valve body 12 with an extension 14 projecting downwardly from its underside and ~ -which houses a small pilot valve 15. Water is conducted to the valve 10 and pilot valve 15 via supply line 16 and manually actuated valve 18 (Fig. 1~
' ' .',," ~:
-4~
2~16~7 The main pilot operated valve body 12 has a threaded aperture 19 to which water supply line 16 is connected. The aperture 19 opens into a central chamber 20 tightly closed at the bottom by a flexible diaphragm 21 when the small pilot valve 15 i6 closed. A ~econd or lower chamber 22 of substantially larger diameter than that of central chamber 20 is situated under the diaphragm 21. The diaphragm 21 includes a relatively large central aperture 24 which communicates between the chambers 20, 22. Since the area of the diaphragm 21 underlying the central chamber 20 i5 sub6tantially less than the area of the diaphragm 21 overlying the lower chamber 22, and the two chambers are connected by the central aperture 24 in the diaphragm, a differential force-exists pressing the diaphragm 21 tightly against the bottom opening of the central chamber 20. Under this condition, no water will flow through the valve body 12 while the small pilot valve 15 remains closed.
The small pilot valve 15 is of compact construction and is situated at one end of the trough 11 (Figs. 1 and 4-7). It is operated by means of a pivoted lever 25 with a small float 26 ;
attached at its outboard end by an extension bar 27 and bolt 23.
The lever 25 is pivotally mounted on pin 28 at the lower end of the body extension 14 and includes a small cam 29 situated close ,~ , to the pin 28. A small pilot valve disc 30 with a face 33 of ~;
rubber or the like is slidably mounted within the extçnsion 14 ;
between the cam 29 and an overlying partition 31 in the valve body 12. The partition includes a central aperture 32 of ~ ~
,~ ~ ": '"' ~ ' -5- ~
'':
approximately the same size as the aperture 24 in the diaphragm.
The aperture 32 communicates between the lower chamber 22 of the main valve body 12 and the disc chamber 36 in the valve body extension 14. The aperture 32 has a raised sealing collar surrounding its lower end which coacts with the pilot valve dlsc 30.
Provision is made in the construction of the small pilot valve 15 for getting rid of sand and other debris entering the body of the pilot operated valve 10 from the water supply line 16. This i~ accomplished in part by constructing the pilot valve disc 30 with a plurality of raised vertical ribs 35 disposed in laterally spaced apart relation around the disc 30. It is also accomplished by making the diameter of the valve disc chamber 36 somewhat lsrger than the diameter of the valve disc 30 including the vertical ribs 35. The valve disc 30 is thus held captive within the disc chamber 36 with adequate clearance for discharging sand and other debris entering the chamber from the body of the main pilot operated valve 10.
Turning next to the functioning of the,main pilot operated valve 10, Fig. 4 shows the valve 10 in water filled condition ~;
with the small pilot valve disc 30 closed by the float actuated ~ :
lever 25, 26, 27. Under this condition, the trough is full.
.
Assuming that one or more animals begin to drink from the trough, the water level will start to fall. At the same time, the small pilot valve 15 starts to open and bleeds a small stream of water ;
from the main pilot operated valve 10 through the small pilot . ~
.. -~''' ',''',''','' '" , '.";
-6- ~ ~
valve 15 as shown in Fig. 5. By reason of the relatively large opening 24 in the center of the diaphragm, there remains sufficient differential pressure to keep the diaphragm sealed.
This condition represents Stage 1 of discharge from the main pilot operated valve 10.
By the time the water level in the trough has dropped about 3/4 inch due to drinking by the animals, the small pilot valve 15 has been opened further by the float actuated lever 25-27. The discharge from the valve 15 then becomes great enough to nullify the differential force holding the diaphragm 21 against the opening at the bottom of the central chamber 20. The diaphragm then shifts downward against the wall and floor of the lower chamber 22 as shown in Fig. 6. This opens a wide path for water at supply line pressure to flow through the central chamber 20, pa~t the diaphragm 21, through the right hand port 38 and associated spout 39 so as to discharge into the trough 11. This condition represents Stage 2 of discharge from main pilot ;
operated valve 10. Since the discharge into the trough runs at~ ;
approximately 20 gallons of water per minute, the water level in ~ `~
the trough 11 begins to rise and the small pilot valve 15 begins to close. After a relatively short time, the float actuated lever 25 of valve 15 swings upward toward closed valve position ;
(Figs. 4 and 7). At the same time, the differential force begins to return the diaphragm 21 to its original position without water hammer. During this period, water is quickly returned to full level in the trough and the valve 15 then closes.
:.." ,: :',~
'~. :,'; ':
,' ,~'; ~ . ', Sf~ 62~
The main pilot operated valve 10 discussed earlier herein is advantageous because it utilizes small flotation devices designed for small flow rates, e.g. 4 gallons per minute, to control high flow rates in the vicinity of 20 gallons per minute. This is accomplishea by constructing the pilot operated valve 10 for two stage operation.
The first stage, as noted earlier herein, involves the use of the small pilot valve 15 to open slightly and thus avoid the water hammer and chatter generally associated with pilot operated devices. Under this condition, by reason of the opening 24 in the center of the diaphragm, there is still sufficient differential pressure to keep the diaphragm 21 sealed against the bottom of the central chamber 20.
In the ~econd stage, as the water level in the trough drops approximately 3/4 inch, the pressure differential disappears and diaphragm 21 shifts to the position shown in Fig. 6. This allows water from the supply line 16 to flow through the central chamber 20, past diaphragm 21, through port 38 and spout 39, and thence into the trough 11 at 20 gallons per minute until full trough level has been restored. ~
~oth the main pilot operated valve 10 and the small pilot ~ ;
valve 15 are designed with a downward vertical path for foreign ~-material such as sand and other debris to be exhausted from these ., valves and thereby avoid valve failure. Debris entering the valve 10 from the supply line 16 passes from the chamber 20 downward through central aperture 24 in the diaphragm, through ;
... . ,,~.
: :..: ...:
' ''"' ' ' "'''.'' -8- ~ ~
: .
~1627 lower chamber 22 of the valve body and aperture 32 in partition 31, thence into disc chamber 36, downward through the annular space surrounding the disc 30, and finally exhausting from the disc chamber 36. When the main valve is in stage 2 condition as ~hown in Fig. 6, some debris may also be exhausted through the ~pout 39.
' " ''' "':' ' " ~ "'''' ';
.,., .,~' :,~, '''' ,' '. ',~
~"' ;~''~;
;' ~:", ', '~'' ,'.
.. .~
., ': , ,"' ' ".
."' ';',',' '".' ;: ~
, ;: ,...
." ":''''" ' ,, ' ~' _g_ . ,
The small pilot valve 15 is of compact construction and is situated at one end of the trough 11 (Figs. 1 and 4-7). It is operated by means of a pivoted lever 25 with a small float 26 ;
attached at its outboard end by an extension bar 27 and bolt 23.
The lever 25 is pivotally mounted on pin 28 at the lower end of the body extension 14 and includes a small cam 29 situated close ,~ , to the pin 28. A small pilot valve disc 30 with a face 33 of ~;
rubber or the like is slidably mounted within the extçnsion 14 ;
between the cam 29 and an overlying partition 31 in the valve body 12. The partition includes a central aperture 32 of ~ ~
,~ ~ ": '"' ~ ' -5- ~
'':
approximately the same size as the aperture 24 in the diaphragm.
The aperture 32 communicates between the lower chamber 22 of the main valve body 12 and the disc chamber 36 in the valve body extension 14. The aperture 32 has a raised sealing collar surrounding its lower end which coacts with the pilot valve dlsc 30.
Provision is made in the construction of the small pilot valve 15 for getting rid of sand and other debris entering the body of the pilot operated valve 10 from the water supply line 16. This i~ accomplished in part by constructing the pilot valve disc 30 with a plurality of raised vertical ribs 35 disposed in laterally spaced apart relation around the disc 30. It is also accomplished by making the diameter of the valve disc chamber 36 somewhat lsrger than the diameter of the valve disc 30 including the vertical ribs 35. The valve disc 30 is thus held captive within the disc chamber 36 with adequate clearance for discharging sand and other debris entering the chamber from the body of the main pilot operated valve 10.
Turning next to the functioning of the,main pilot operated valve 10, Fig. 4 shows the valve 10 in water filled condition ~;
with the small pilot valve disc 30 closed by the float actuated ~ :
lever 25, 26, 27. Under this condition, the trough is full.
.
Assuming that one or more animals begin to drink from the trough, the water level will start to fall. At the same time, the small pilot valve 15 starts to open and bleeds a small stream of water ;
from the main pilot operated valve 10 through the small pilot . ~
.. -~''' ',''',''','' '" , '.";
-6- ~ ~
valve 15 as shown in Fig. 5. By reason of the relatively large opening 24 in the center of the diaphragm, there remains sufficient differential pressure to keep the diaphragm sealed.
This condition represents Stage 1 of discharge from the main pilot operated valve 10.
By the time the water level in the trough has dropped about 3/4 inch due to drinking by the animals, the small pilot valve 15 has been opened further by the float actuated lever 25-27. The discharge from the valve 15 then becomes great enough to nullify the differential force holding the diaphragm 21 against the opening at the bottom of the central chamber 20. The diaphragm then shifts downward against the wall and floor of the lower chamber 22 as shown in Fig. 6. This opens a wide path for water at supply line pressure to flow through the central chamber 20, pa~t the diaphragm 21, through the right hand port 38 and associated spout 39 so as to discharge into the trough 11. This condition represents Stage 2 of discharge from main pilot ;
operated valve 10. Since the discharge into the trough runs at~ ;
approximately 20 gallons of water per minute, the water level in ~ `~
the trough 11 begins to rise and the small pilot valve 15 begins to close. After a relatively short time, the float actuated lever 25 of valve 15 swings upward toward closed valve position ;
(Figs. 4 and 7). At the same time, the differential force begins to return the diaphragm 21 to its original position without water hammer. During this period, water is quickly returned to full level in the trough and the valve 15 then closes.
:.." ,: :',~
'~. :,'; ':
,' ,~'; ~ . ', Sf~ 62~
The main pilot operated valve 10 discussed earlier herein is advantageous because it utilizes small flotation devices designed for small flow rates, e.g. 4 gallons per minute, to control high flow rates in the vicinity of 20 gallons per minute. This is accomplishea by constructing the pilot operated valve 10 for two stage operation.
The first stage, as noted earlier herein, involves the use of the small pilot valve 15 to open slightly and thus avoid the water hammer and chatter generally associated with pilot operated devices. Under this condition, by reason of the opening 24 in the center of the diaphragm, there is still sufficient differential pressure to keep the diaphragm 21 sealed against the bottom of the central chamber 20.
In the ~econd stage, as the water level in the trough drops approximately 3/4 inch, the pressure differential disappears and diaphragm 21 shifts to the position shown in Fig. 6. This allows water from the supply line 16 to flow through the central chamber 20, past diaphragm 21, through port 38 and spout 39, and thence into the trough 11 at 20 gallons per minute until full trough level has been restored. ~
~oth the main pilot operated valve 10 and the small pilot ~ ;
valve 15 are designed with a downward vertical path for foreign ~-material such as sand and other debris to be exhausted from these ., valves and thereby avoid valve failure. Debris entering the valve 10 from the supply line 16 passes from the chamber 20 downward through central aperture 24 in the diaphragm, through ;
... . ,,~.
: :..: ...:
' ''"' ' ' "'''.'' -8- ~ ~
: .
~1627 lower chamber 22 of the valve body and aperture 32 in partition 31, thence into disc chamber 36, downward through the annular space surrounding the disc 30, and finally exhausting from the disc chamber 36. When the main valve is in stage 2 condition as ~hown in Fig. 6, some debris may also be exhausted through the ~pout 39.
' " ''' "':' ' " ~ "'''' ';
.,., .,~' :,~, '''' ,' '. ',~
~"' ;~''~;
;' ~:", ', '~'' ,'.
.. .~
., ': , ,"' ' ".
."' ';',',' '".' ;: ~
, ;: ,...
." ":''''" ' ,, ' ~' _g_ . ,
Claims (11)
- I claim as my invention:
l. A main pilot operated valve for automatically regulating the supply of water to a livestock watering trough comprising, in combination:
(a) a main valve body having a water supply inlet, a central chamber, a lower chamber, and a water outlet;
(b) a flexible diaphragm interposed between said central chamber and said lower chamber, said diaphragm having an aperture connecting said central and lower chambers;
(c) said lower chamber when filled with water holding said diaphragm in sealing relation with said central chamber;
(d) a small pilot valve mounted in an underlying extension of said main valve body;
(e) said pilot valve having a valve disc slidably and loosely mounted in a disc chamber within said extension;
(f) a partition interposed between said lower chamber and said disc chamber having an aperture connecting said chambers;
and (g) a float actuated lever adapted to move said small pilot valve disc to open and close said aperture connecting said lower chamber and said disc chamber. - 2. The pilot operated valve as set forth in claim 1, wherein said small pilot valve disc is cam operated by means of a float actuated lever.
- 3. A pilot operated valve defined in claim 1, wherein said float actuated lever is pivotally mounted within said main body extension and includes a cam adjacent to said pivotal mounting for actuating said pilot valve disc.
- 4. The pilot operated valve set forth in claim 1, wherein said small pilot valve disc is formed with raised vertical ribs disposed in laterally spaced apart relation around said disc.
- 5. A pilot operated valve as recited in claim 1, wherein the outer diameter of said disc with said ribs included is substantially less than the inner diameter of said disc chamber.
- 6. A main pilot operated valve for regulating the water level of a watering trough for livestock, comprising, in combination:
(a) a main valve body having a water supply inlet, a central chamber, a lower chamber, and a water outlet;
(b) a flexible diaphragm interposed between said central chamber and said lower chamber, said diaphragm having an aperture connecting said central and lower chambers;
(c) said lower chamber when filled with water exerting a differential force on said diaphragm maintaining it in sealing relation with said central chamber;
(d) a small pilot valve mounted in an underlying extension of said main valve body and having a valve disc slidably and loosely mounted in a disc chamber within said extension;
(e) a partition interposed between said lower chamber and said disc chamber having an aperture connecting said chambers;
and (f) a float actuated lever adapted to move said small pilot valve disc to open position when the water level drops in said trough, whereby said differential force on said diaphragm ceases and said diaphragm shifts away from said central chamber opening allowing water from said supply line to pass through said main pilot operated valve and into said trough. - 7. A main pilot operated valve as defined in claim 6, wherein a drop of approximately 3/4 inch in the water level of said trough will cause said valve to discharge water at 20 gallons per minute until the original water level has been restored.
- 8. The main pilot operated valve defined in claim 6, wherein said small pilot valve opens in two stages, the first bleeding a small amount of water to exhaust sand and other debris, and the second stage without differential force any longer thereby causing said diaphragm to open wide with water flowing through said main valve into said trough at supply line pressure.
- 9. A small pilot valve as defined in claim 6, wherein said overlying partition has an aperture therethrough and a raised collar on the bottom face of said partition for sealing engagement with said pilot valve disc.
- 10. A small pilot valve as defined in claim 9, wherein said pilot valve disc has a resilient layer adapted to sealingly coact with said raised collar on the bottom face of said partition.
- 11. A small pilot valve as defined in claim 3, wherein said cam is adapted to move said pilot valve disk along the approximate center line of said disc chamber and the aperture in said partition.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US37382189A | 1989-06-30 | 1989-06-30 | |
| US373,821 | 1989-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2001627A1 true CA2001627A1 (en) | 1990-12-31 |
Family
ID=23474018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2001627 Abandoned CA2001627A1 (en) | 1989-06-30 | 1989-10-27 | Pilot operated water valve for livestock trough |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2001627A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11716968B2 (en) * | 2017-10-04 | 2023-08-08 | Ritchie Industries, Inc. | Waterer valve system |
-
1989
- 1989-10-27 CA CA 2001627 patent/CA2001627A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11716968B2 (en) * | 2017-10-04 | 2023-08-08 | Ritchie Industries, Inc. | Waterer valve system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4000526A (en) | Toilet flushing apparatus | |
| CN101638908B (en) | pressurized dual flush system | |
| IE842460L (en) | Luquid level control valve | |
| US4570719A (en) | Dry pipe valve accelerator | |
| US20080093750A1 (en) | Dual inlet water tank for a humidifier | |
| US4596278A (en) | Balanced, two-stage poppet valve for fuel dispensing nozzle | |
| US4829605A (en) | Dual flush valve assembly | |
| US4573495A (en) | Hydrostatic ballcock assembly | |
| CA2001627A1 (en) | Pilot operated water valve for livestock trough | |
| EP0169849A1 (en) | Device for controlled discharge of liquid to animals | |
| US2811169A (en) | Liquid level control valve | |
| US5252034A (en) | Air dryer with integral isolation valve | |
| US5014735A (en) | Automatic drain valve | |
| US5140712A (en) | Siphon-operated water tank for a flushing system | |
| WO2001084027A1 (en) | Valve device and pipeline system | |
| JPH0637274Y2 (en) | Pilot steam trap | |
| US3025870A (en) | Anti-siphonic device | |
| US3078866A (en) | Automatic valve system for controlling fluid flow | |
| JPS6143024Y2 (en) | ||
| JP2562905Y2 (en) | Pilot type steam trap | |
| US2810396A (en) | Differential float controlled valve | |
| US5150732A (en) | Boosted differential pressure-type tank valve | |
| US2695031A (en) | Valve | |
| US578803A (en) | Valve mechanism | |
| JP2512743Y2 (en) | cock |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |