EP3348517B1 - Valve structure for a pet keg - Google Patents
Valve structure for a pet keg Download PDFInfo
- Publication number
- EP3348517B1 EP3348517B1 EP17853533.2A EP17853533A EP3348517B1 EP 3348517 B1 EP3348517 B1 EP 3348517B1 EP 17853533 A EP17853533 A EP 17853533A EP 3348517 B1 EP3348517 B1 EP 3348517B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- keg
- stem
- pet
- valve casing
- 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.)
- Active
Links
- 238000010276 construction Methods 0.000 claims description 45
- 244000273618 Sphenoclea zeylanica Species 0.000 claims description 11
- 235000001674 Agaricus brunnescens Nutrition 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 229920002943 EPDM rubber Polymers 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 51
- 239000005020 polyethylene terephthalate Substances 0.000 description 51
- 210000003739 neck Anatomy 0.000 description 19
- 235000013361 beverage Nutrition 0.000 description 16
- 239000007789 gas Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 230000006378 damage Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 235000013405 beer Nutrition 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 101001012021 Homo sapiens Mammalian ependymin-related protein 1 Proteins 0.000 description 1
- 102100030031 Mammalian ependymin-related protein 1 Human genes 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D1/00—Apparatus or devices for dispensing beverages on draught
- B67D1/08—Details
- B67D1/0829—Keg connection means
- B67D1/0841—Details
- B67D1/0845—Security means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D1/00—Apparatus or devices for dispensing beverages on draught
- B67D1/08—Details
- B67D1/0829—Keg connection means
- B67D1/0831—Keg connection means combined with valves
- B67D1/0832—Keg connection means combined with valves with two valves disposed concentrically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D1/00—Apparatus or devices for dispensing beverages on draught
- B67D1/08—Details
- B67D1/12—Flow or pressure control devices or systems, e.g. valves, gas pressure control, level control in storage containers
- B67D1/125—Safety means, e.g. over-pressure valves
Definitions
- the invention relates to corking constructions intended for polyethylene terephthalate tanks (hereinafter referred to as a "PET keg") and installed on PET keg necks for dispensing, storage and transportation of beverages in a PET keg under pressure.
- PET keg polyethylene terephthalate tanks
- PET kegs equipped with valve constructions are used for storage and dispensing of beverages, for example, such as beer.
- These valve constructions have several channels ensuring flow of liquid and gas.
- a beverage is filled through the first channel of the valve construction, while the gas, which is forced out from the keg, comes out through the second channel.
- the gas i. e. nitrogen or carbon dioxide, is injected into a PET keg through the first channel to force out the beverage content from a PET keg through the second channel.
- the beverage content is dispensed using a dispensing head attached to the valve construction on spring-loaded elements of the valve construction with subsequent opening of channels, one of which is used to supply inert gas under overpressure, and the other is used to dispense the beverage content which is forced out by the gas.
- the sealing element of the valve construction is intended to maintain the pressure in the PET keg during removal (dismantling) of the dispensing head. As a rule, in the case of dispensing and storage of beer, the overpressure makes about 2.5-3.0 bars. Said pressure is the operating pressure of a PET keg. A PET keg, however, withstands the pressure of about 7-8 bars.
- a container made of plastics material is known, for example, a PET keg for beverages with a connecting fitting with a seal (patent of the Russian Federation RU2466085 C1 ), wherein the connecting fitting and/or the seal and, consequently, a keg head are structurally designed such that after a certain opening operation, the subsequent automatic closing operation in practice is not carried out completely or is not completed for a non-closable opening remains during the said subsequent automatic closing operation. Said opening ensures that the pressure is reduced in the interior. This means that it is no longer possible for an overpressure to build up in the interior and the potential danger of container rupture consequently no longer applies.
- the connecting fitting includes a stopper with a predetermined breaking point for the spring-loaded seal.
- the seal has a predetermined breaking point or is designed with the possibility of deformation during a closing operation to form an opening.
- Said type of valve prevents a PET keg from destruction not for the entire period of use but only after the previous opening operation with the subsequent automatic closing operation making the further use of a PET keg impossible after opening thereof, i.e. the dispensing head can be put on only once. With the dispensing head removed, the sealing of a PET keg is reduced and it can not be further used, thus making the rest of the product worthless. It should be noted, that it is often necessary to remove the dispensing head when using the PET keg in order to fully empty it, for example, if a failure of the dispensing head or the overall dispensing system has been detected, or if routine sanitation treatment of the dispensing system is being conducted. It should also be noted that the prior art solution does not ensure that the valve prevents a PET keg and product therein from destruction during storage and transportation.
- a valve for a container according to patent of the Russian Federation for a utility model RU117417U is known with a body made in the form of a sleeve, having a hollow stem mounted therein, an annular gate, spring and cover with the means of connection to connect with the container neck; where the first end of the stem is made open and connected to the bottom of the body, protruding from it, and the second end of the stem is made closed and equipped with a flange; in addition, the stem forming has at least one window; an annular gate which can slide along the tube is installed on the stem between the bottom of the body and the flange of the stem, the central opening of which has an annular shoulder designed such that it can engage with the flange of the stem, and the spring is installed between the annular gate and the bottom of the body; in addition, the body forming has at least one window; the cover, however, is made in the form of a bushing with the means of connection on the interior surface thereof and with an annular shoulder in the channel thereof designed such that the
- the construction is assembled on the neck of the container by stages.
- the assembly procedure consists of the placement of the body on the neck of the container using a shoulder provided on the body and a recess provided on the neck of the container, and subsequent installation of other elements, which is completed by the installation of the cover secured with the exterior surface of the neck using a threaded connection or latch assembly.
- the known construction of the valve does not solve the problem of exceeding overpressure occuring in the case of violating the specifications of production, storage and use of PET kegs filled with beverage content.
- a valve construction according to the preamble of claim 1 is known from EP 0 890 545 A1 .
- Other valve constructions are known from WO 95/23112 A1 or EP 0 056 295 A1 .
- the technical object of the claimed invention is to create a flexible easily producible valve construction for a PET keg providing high reliability, sealing and the possibility of functioning as a relief valve if overpressure inside a PET keg exceeds the maximum permissible value.
- the technical result consists in obtaining a reliable, easily producible and safely operated valve for a PET keg.
- valve construction for a PET keg comprising a valve casing with a central opening and the means of connection with the keg neck, a hollow stem, valve element, spring, annular flange; with the first end of the stem made open, and the second end made closed having an annular shoulder; with at least one window in the stem forming, and the valve element installed on the stem and able to slide along thereof, having a central opening or hole with an annular recess designed such that it can engage with the annular shoulder of the stem and the annular shoulder on the exterior surface made such that it can engage with the valve element; and the spring is installed between the valve element and the annular flange; and the valve casing, however, is made in the form of a mushroom and connected to the annular flange using a threaded connection intended for direct installation of the valve on a keg neck; openings for gas flow are provided at the bottom of the annular flange; an annular gasket is provided between the flange and cylindrical surface of
- the distinction of the claimed invention from the prototype is the fact that the claimed invention can ensure the functioning of the valve element as a valve when dispensing beverages in the normal mode of operation, as a relief valve when overpressure in a PET keg is above the maximum permissible value, and as an actuation indicator of the relief valve.
- the valve construction comprises the valve casing (1) made in the form of a mushroom with a central opening or hole, the hollow stem (2) installed therein along the longitudinal axis, the valve element (3), the spring (4) and the annular flange (5) providing upward pressure thereto ( Fig. 1 , 2 ).
- the valve casing (1) comprises the base (7) which may be made both in the form of a circle and in the form of a truncated equilateral triangle having vertices constrained by a circle (see Fig. 5 ), the flange (8), and the cylindrical leg (9). Reinforcement ribs (10) are provided at the joint of the base (7) and the external annular surface of the flange (8). Both the latch assembly ( Fig.3 ) and threaded joint ( Fig.4 ) may be used to connect the valve construction with a PET keg neck.
- the vanes (11) on the flange (8) are intended to ensure latch engagement with a PET keg neck.
- the female thread (21) on the flange (8) is intended to ensure a threaded connection with a PET keg neck.
- the surface of the valve casing has the shoulders (12) to ensure producibility when installing the valve construction on threaded keg necks.
- the valve casing (1) has a central opening with the annular shoulder (6) engaging with the annular recess (16) of the valve element (3).
- the annular gasket (20) with a circular cross section is provided in the area between the cylindrical mushroom leg (9) and the flange (8) of the valve casing (1) to ensure the sealing of connection of the valve construction with a PET keg neck.
- the stem (2) is made hollow and has the form of a tube.
- the first end of the stem is made open and passes through the opening of the annular flange (5), protruding from it.
- the second end of the stem (2) is made closed and has the shoulder (13).
- At least one window (14) is provided in the upper part of the hollow stem (2).
- valve element (3) having the central opening with the annular recess (15) designed such that it can engage with the shoulder (13) of the hollow stem (2) is installed on the stem (2) and can slide along thereof.
- the spring (4) installed between the annular flange (5) and the valve element (3) ensures upward pressure of the valve element (3) to the annular shoulder (6) of the valve casing (1).
- the sealing ring (17) is installed between the valve element (3) and the spring (4) to prevent from pressing-through of material surface of the former.
- the ring flange (5) is fastened to the valve casing (1) using a threaded connection.
- the ring flange (5) has the centering vanes (18) and openings for the flow of liquid or gas.
- valve parts are manufactured using polymeric materials, in particular the valve casing, tube and annular flange of the valve construction are made of polyacetal, and the valve element (3) is made of polymeric materials with 40-60 Shore hardness depending on the required actuation pressure, such as: thermoelastoplast (TEP), or rubber based on ethylene propylene diene monomer (EPDM) rubber, or silicone.
- TEP thermoelastoplast
- EPDM ethylene propylene diene monomer
- silicone silicone
- the claimed valve construction is installed on the neck (19) of the PET keg. Fastening, however, may be implemented using a threaded connection with the female thread (21) or using a latch assembly formed by the vanes (11).
- the vanes (11) When using the latch assembly, the vanes (11) enter the groove between the annular shoulders on the exterior surface of a PET keg neck.
- a dispensing tube is connected to the open end of the hollow stem (2) ensuring dispensing of beverage content.
- the PET keg is filled as follows:
- the dispensing head of the dispensing line (not shown) has one or several shoulders which apply pressure onto the open surface of the spring-loaded valve element (3) on the side of the valve casing (1). This initiates opening of the first annular channel between the valve element (3) and the mushroom of the cover (9) as well as the second channel formed by the internal channel of the hollow stem with the open window (14) on the forming thereof.
- a PET keg is filled with beverage content by means of the second channel, while the gas in the PET keg is forced out through the first channel. After relief of pressure applied to the valve element (3) from the side of the dispensing head, the valve element returns to the initial position, thus blocking the channels.
- a PET keg filled with beverage content is stored and transported with the valve element (3) closed.
- the dispensing of liquid from a PET keg is made in the reverse order: the shoulders of the dispensing head (not shown) apply pressure onto the open surface of the spring-loaded valve element (3) from the side of the valve casing (1). This initiates opening of the first annular channel between the valve element (3) and the mushroom of the cover (9), as well as the second channel formed by at least one window (14) on the forming of the hollow stem (2).
- the keg is supplied with inert gas under overpressure through the first annular channel from an external container, which forces out the liquid in the keg through the tube, hollow stem (2) attached thereto, and window (14) on the forming of the hollow stem (2).
- valve element (3) is irretrievably pressed out of the valve construction such that it is above the end surface of the valve casing (1) to relieve overpressure, thus preventing the destruction (rupture) of the PET keg.
- the pressed-out valve element observed visually warns the consumer of valve actuation and unfit of the beverage content for consumption.
- the pressed-out valve element does not allow to attach the dispensing head to the valve construction, thus preventing possible use of a PET keg with beverage content unsuitable for consumption.
- the maximum permissible value pressure in the PET keg shall be maintained within 4-6 bars.
Landscapes
- Closures For Containers (AREA)
- Devices For Dispensing Beverages (AREA)
Description
- The invention relates to corking constructions intended for polyethylene terephthalate tanks (hereinafter referred to as a "PET keg") and installed on PET keg necks for dispensing, storage and transportation of beverages in a PET keg under pressure.
- PET kegs equipped with valve constructions are used for storage and dispensing of beverages, for example, such as beer. These valve constructions have several channels ensuring flow of liquid and gas. When filling a PET keg, which is usually filled upside down, a beverage is filled through the first channel of the valve construction, while the gas, which is forced out from the keg, comes out through the second channel. During dispensing, the gas, i. e. nitrogen or carbon dioxide, is injected into a PET keg through the first channel to force out the beverage content from a PET keg through the second channel. The beverage content is dispensed using a dispensing head attached to the valve construction on spring-loaded elements of the valve construction with subsequent opening of channels, one of which is used to supply inert gas under overpressure, and the other is used to dispense the beverage content which is forced out by the gas. The sealing element of the valve construction is intended to maintain the pressure in the PET keg during removal (dismantling) of the dispensing head. As a rule, in the case of dispensing and storage of beer, the overpressure makes about 2.5-3.0 bars. Said pressure is the operating pressure of a PET keg. A PET keg, however, withstands the pressure of about 7-8 bars.
- In the case of violation of specifications of production, storage and use of a PET keg filled with beverage content, overpressure above the maximum permissible value may occur in a PET keg leading to rupture thereof. This problem poses serious threat to people located in close proximity to the PET keg.
- A container made of plastics material is known, for example, a PET keg for beverages with a connecting fitting with a seal (patent of the Russian Federation
RU2466085 C1 - Said type of valve prevents a PET keg from destruction not for the entire period of use but only after the previous opening operation with the subsequent automatic closing operation making the further use of a PET keg impossible after opening thereof, i.e. the dispensing head can be put on only once. With the dispensing head removed, the sealing of a PET keg is reduced and it can not be further used, thus making the rest of the product worthless. It should be noted, that it is often necessary to remove the dispensing head when using the PET keg in order to fully empty it, for example, if a failure of the dispensing head or the overall dispensing system has been detected, or if routine sanitation treatment of the dispensing system is being conducted. It should also be noted that the prior art solution does not ensure that the valve prevents a PET keg and product therein from destruction during storage and transportation.
- A valve for a container according to patent of the Russian Federation for a utility model
RU117417U - According to the prototype, the construction is assembled on the neck of the container by stages. The assembly procedure consists of the placement of the body on the neck of the container using a shoulder provided on the body and a recess provided on the neck of the container, and subsequent installation of other elements, which is completed by the installation of the cover secured with the exterior surface of the neck using a threaded connection or latch assembly. The known construction of the valve does not solve the problem of exceeding overpressure occuring in the case of violating the specifications of production, storage and use of PET kegs filled with beverage content. A valve construction according to the preamble of claim 1 is known from
EP 0 890 545 A1 . Other valve constructions are known fromWO 95/23112 A1 EP 0 056 295 A1 . - The technical object of the claimed invention is to create a flexible easily producible valve construction for a PET keg providing high reliability, sealing and the possibility of functioning as a relief valve if overpressure inside a PET keg exceeds the maximum permissible value.
- The technical result consists in obtaining a reliable, easily producible and safely operated valve for a PET keg.
- The technical result is achieved by the fact that the valve construction for a PET keg comprising a valve casing with a central opening and the means of connection with the keg neck, a hollow stem, valve element, spring, annular flange; with the first end of the stem made open, and the second end made closed having an annular shoulder; with at least one window in the stem forming, and the valve element installed on the stem and able to slide along thereof, having a central opening or hole with an annular recess designed such that it can engage with the annular shoulder of the stem and the annular shoulder on the exterior surface made such that it can engage with the valve element; and the spring is installed between the valve element and the annular flange; and the valve casing, however, is made in the form of a mushroom and connected to the annular flange using a threaded connection intended for direct installation of the valve on a keg neck; openings for gas flow are provided at the bottom of the annular flange; an annular gasket is provided between the flange and cylindrical surface of the mushroom leg of the valve casing to seal off the connection of the valve casing with a PET keg neck; the valve element is made such that it can function both as a relief valve and as an actuation indicator made of polymeric material with 40-60 Shore hardness.
- The distinction of the claimed invention from the prototype is the fact that the claimed invention can ensure the functioning of the valve element as a valve when dispensing beverages in the normal mode of operation, as a relief valve when overpressure in a PET keg is above the maximum permissible value, and as an actuation indicator of the relief valve.
- The claimed invention is illustrated by the following drawings:
-
Fig.1 - valve construction (with a latch assembly) in section; -
Fig.2 - valve construction with a threaded connection in section; -
Fig.3 . - detail drawing of the elements of valve construction with a latch assembly; -
Fig.4 - detail drawing of the elements of valve construction with a threaded connection. -
Fig.5 - cross-sectional view of the valve casing base. - The valve construction comprises the valve casing (1) made in the form of a mushroom with a central opening or hole, the hollow stem (2) installed therein along the longitudinal axis, the valve element (3), the spring (4) and the annular flange (5) providing upward pressure thereto (
Fig. 1 ,2 ). - The valve casing (1) comprises the base (7) which may be made both in the form of a circle and in the form of a truncated equilateral triangle having vertices constrained by a circle (see
Fig. 5 ), the flange (8), and the cylindrical leg (9). Reinforcement ribs (10) are provided at the joint of the base (7) and the external annular surface of the flange (8). Both the latch assembly (Fig.3 ) and threaded joint (Fig.4 ) may be used to connect the valve construction with a PET keg neck. The vanes (11) on the flange (8) are intended to ensure latch engagement with a PET keg neck. The female thread (21) on the flange (8) is intended to ensure a threaded connection with a PET keg neck. The surface of the valve casing has the shoulders (12) to ensure producibility when installing the valve construction on threaded keg necks. The valve casing (1) has a central opening with the annular shoulder (6) engaging with the annular recess (16) of the valve element (3). The annular gasket (20) with a circular cross section is provided in the area between the cylindrical mushroom leg (9) and the flange (8) of the valve casing (1) to ensure the sealing of connection of the valve construction with a PET keg neck. - The stem (2) is made hollow and has the form of a tube. The first end of the stem is made open and passes through the opening of the annular flange (5), protruding from it. The second end of the stem (2) is made closed and has the shoulder (13). At least one window (14) is provided in the upper part of the hollow stem (2).
- The valve element (3) having the central opening with the annular recess (15) designed such that it can engage with the shoulder (13) of the hollow stem (2) is installed on the stem (2) and can slide along thereof.
- The spring (4) installed between the annular flange (5) and the valve element (3) ensures upward pressure of the valve element (3) to the annular shoulder (6) of the valve casing (1). The sealing ring (17) is installed between the valve element (3) and the spring (4) to prevent from pressing-through of material surface of the former.
- The ring flange (5) is fastened to the valve casing (1) using a threaded connection. The ring flange (5) has the centering vanes (18) and openings for the flow of liquid or gas.
- The valve parts are manufactured using polymeric materials, in particular the valve casing, tube and annular flange of the valve construction are made of polyacetal, and the valve element (3) is made of polymeric materials with 40-60 Shore hardness depending on the required actuation pressure, such as: thermoelastoplast (TEP), or rubber based on ethylene propylene diene monomer (EPDM) rubber, or silicone.
- The claimed valve construction is installed on the neck (19) of the PET keg. Fastening, however, may be implemented using a threaded connection with the female thread (21) or using a latch assembly formed by the vanes (11).
- When using the latch assembly, the vanes (11) enter the groove between the annular shoulders on the exterior surface of a PET keg neck.
- When using a threaded joint, fastening is made by means of the female thread (21) on the flange (8).
- Filling of liquid into the PET keg as well as dispensing of liquid therefrom is ensured by the valve construction installed on a PET keg neck. A dispensing tube is connected to the open end of the hollow stem (2) ensuring dispensing of beverage content.
- The PET keg is filled as follows:
The dispensing head of the dispensing line (not shown) has one or several shoulders which apply pressure onto the open surface of the spring-loaded valve element (3) on the side of the valve casing (1). This initiates opening of the first annular channel between the valve element (3) and the mushroom of the cover (9) as well as the second channel formed by the internal channel of the hollow stem with the open window (14) on the forming thereof. A PET keg is filled with beverage content by means of the second channel, while the gas in the PET keg is forced out through the first channel. After relief of pressure applied to the valve element (3) from the side of the dispensing head, the valve element returns to the initial position, thus blocking the channels. A PET keg filled with beverage content is stored and transported with the valve element (3) closed. - The dispensing of liquid from a PET keg is made in the reverse order: the shoulders of the dispensing head (not shown) apply pressure onto the open surface of the spring-loaded valve element (3) from the side of the valve casing (1). This initiates opening of the first annular channel between the valve element (3) and the mushroom of the cover (9), as well as the second channel formed by at least one window (14) on the forming of the hollow stem (2). The keg is supplied with inert gas under overpressure through the first annular channel from an external container, which forces out the liquid in the keg through the tube, hollow stem (2) attached thereto, and window (14) on the forming of the hollow stem (2).
- If the overpressure in the PET keg is above the maximum permissible value under transportation, storage and operation conditions, the valve element (3) is irretrievably pressed out of the valve construction such that it is above the end surface of the valve casing (1) to relieve overpressure, thus preventing the destruction (rupture) of the PET keg.
- The pressed-out valve element observed visually warns the consumer of valve actuation and unfit of the beverage content for consumption. In addition, the pressed-out valve element does not allow to attach the dispensing head to the valve construction, thus preventing possible use of a PET keg with beverage content unsuitable for consumption.
- Considering that the PET keg rupture pressure makes 7-8 bars, and the working pressure makes 2.5-3.0 bars, the maximum permissible value pressure in the PET keg shall be maintained within 4-6 bars.
- Tests of the construction of the claimed invention were carried out:
- The valve element was made of TEP with 54±2 Shore hardness. The construction withstood the operating pressure of up to 4.5 bars. Upon reaching the pressure of P=6 bars, the valve actuated in 60-120 minutes at the ambient temperature of 25-26°C.
- The valve element was made of TEP with Shore hardness of 47±2 pieces. The construction withstood the operating pressure of up to 4.0 bars. Upon reaching the pressure of P=5.5 bars, the valve actuated in 30-60 minutes at the temperature of 25-26°C.
- The valve element was made of EPDR with 47±2 Shore hardness. The construction withstood the operating pressure of up to 4.0 bars. Upon reaching the pressure of P=5.5 bars, the valve actuated in 50-180 minutes at the temperature of 25-26°C.
- The valve element was made of silicone with 50±2 Shore hardness. The construction withstood the operating pressure of up to 4.5 bars. Upon reaching the pressure of P=6 bars, the valve actuated in 60-120 minutes at the temperature of 25-26°C.
- The valve element was made of silicone with 41±2 Shore hardness. The construction withstood the operating pressure of up to 3.5 bars. Upon reaching the pressure of P=5.5 bars, the valve actuated in 5-15 minutes at the temperature of 25-26°C.
- The claimed invention offers the following advantages:
- ensuring safe storage and usage of PET kegs due to functioning as a relief valve when overpressure in a PET keg is above the maximum permissible value and preventing from the destruction (rupture) of the PET keg;
- indicating valve actuation due to irretrievable pressing-out of the valve element when the pressure in a PET keg is above the maximum permissible value;
- preventing from consumption of an unsuitable beverage due to the fact the dispensing head can not be connected to the valve construction with a pressed-out valve;
- producibility of the construction due to separate assembly of the elements of the valve construction, installation thereof in an assembled conditions, and consequent filling of the PET keg on an automated production line;
- flexibility due to possible usage of the valve construction for various types of necks and dispensing heads changing only the valve casing of the valve construction;
- ensuring reliability and sealing due to the threaded connection of the valve casing and annular flange as well as sealing of a PET keg neck along the edge thereof when connecting with the valve construction.
Claims (6)
- A valve construction for a PET keg comprising a valve casing (1) with an annular shoulder (6) surrounding a central opening or hole of the valve casing, the valve casing comprising means of connection with a keg neck (19), a hollow stem (2), a valve element (3), a spring, an annular flange (5); wherein the first end of the stem (2) is open and the second end of the stem (2) is closed with an annular shoulder (13) protruding from the stem; the stem having at least one window (14) therein; wherein the valve element (3) is installed surrounding the stem (2) and is slidable along it, wherein the valve element (3) defines a hole therein surrounded by an annular recess (15) that is configured for engaging with the annular shoulder (13) of the stem and wherein the annular shoulder (6) of the valve casing (1) is configured for engaging with the valve element (3); and wherein the spring is installed between the valve element (3) and the annular flange (5); characterized in that the valve casing (1) is made in the form of a mushroom comprising a mushroom stem (9) of cylindrical surface and is connected to the annular flange (5) by a threaded connection; in that gas flow openings are provided at the bottom of the annular flange (5); in that an annular gasket (20) is provided between the annular flange (5) and the cylindrical surface of the mushroom stem (9) of the valve casing (1), said annular gasket (20) sealing the connection of the valve casing (1) and the neck (19) of said PET keg; in that the valve element (3) is made of a polymeric material with 40-60 Shore hardness; and in that, when overpressure in a PET keg is above a maximum permissible value, the valve element (3) is irretrievably pressed out and protrudes above the end surface of the valve casing (1), thereby forming an internal channel for relieving overpressure and preventing the attachment of a dispensing head to the valve construction.
- A valve construction for a PET keg of claim 1 characterized in that the valve element (3) is made of thermoelastoplast, or rubber based on ethylene propylene diene monomer (EPDM) rubber, or silicone.
- A valve construction for a PET keg of claim 1 characterized in that the external surface of the valve casing (1) is made in the form a circle or a truncated equilateral triangle having vertices constrained by a circle.
- A valve construction for a PET keg of claim 1 characterized in that the means of connection of the valve casing (1) with the keg neck is made threaded.
- A valve construction for a PET keg of claim 1 characterized in that the external surface of the valve casing (1) is made with shoulders to increase the producibility of installation thereof on a threaded neck.
- A valve construction for a PET keg of claim 1 characterized in that the means of connection of the valve casing (1) with the keg neck is represented by a latch assembly.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2016137883A RU2640988C1 (en) | 2016-09-22 | 2016-09-22 | Valve design for keg pet |
PCT/RU2017/000726 WO2018056870A1 (en) | 2016-09-22 | 2017-10-02 | Valve structure for a pet keg |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3348517A1 EP3348517A1 (en) | 2018-07-18 |
EP3348517A4 EP3348517A4 (en) | 2019-05-22 |
EP3348517B1 true EP3348517B1 (en) | 2020-04-15 |
Family
ID=61691026
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17853533.2A Active EP3348517B1 (en) | 2016-09-22 | 2017-10-02 | Valve structure for a pet keg |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3348517B1 (en) |
EA (1) | EA033500B1 (en) |
RU (1) | RU2640988C1 (en) |
UA (1) | UA122909C2 (en) |
WO (1) | WO2018056870A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU181916U1 (en) * | 2018-04-16 | 2018-07-26 | Максим Анатольевич Старостенко | VALVE FOR CAPACITY |
RU187723U1 (en) * | 2018-11-02 | 2019-03-15 | Виталий Васильевич Шевченко | BEVERAGE STORAGE |
RU2691286C1 (en) * | 2019-03-26 | 2019-06-11 | Сергей Владимирович Князев | Pet keg fitting |
RU2691300C1 (en) * | 2019-03-26 | 2019-06-11 | Сергей Владимирович Князев | Pet keg fitting |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0056295B1 (en) * | 1981-01-05 | 1984-10-31 | Alumasc Limited | Valved closure for kegs or casks |
EP0607351A1 (en) * | 1991-10-18 | 1994-07-27 | Royal Packaging Industries Van Leer N.V. | Fluid dispense system |
JP2001516684A (en) * | 1997-09-18 | 2001-10-02 | ミクロ マティック アー/エス | Safety valve for pressure vessel |
GB0411295D0 (en) * | 2004-05-20 | 2004-06-23 | Interbrew Sa | Alcohol beverage apparatus having a bursting disk |
DE102008053716B4 (en) * | 2008-10-29 | 2012-09-27 | Khs Gmbh | Container, in particular large-volume disposable plastic containers such as Keg for receiving drinks |
DE102011015516A1 (en) * | 2011-03-30 | 2012-10-04 | SCHäFER WERKE GMBH | Container for holding pressurized beverage liquids |
RU117417U1 (en) * | 2012-02-07 | 2012-06-27 | Сергей Александрович Максимов | VALVE FOR CAPACITY |
GB201221141D0 (en) * | 2012-11-23 | 2013-01-09 | Petainer Large Container Ip Ltd | keg closure with venting mechanism |
GB2516623A (en) * | 2013-07-09 | 2015-02-04 | Cypherco Ltd | Pressure relief system |
-
2016
- 2016-09-22 RU RU2016137883A patent/RU2640988C1/en active
-
2017
- 2017-10-02 EP EP17853533.2A patent/EP3348517B1/en active Active
- 2017-10-02 WO PCT/RU2017/000726 patent/WO2018056870A1/en active Application Filing
- 2017-10-02 UA UAA201803353A patent/UA122909C2/en unknown
- 2017-10-02 EA EA201800194A patent/EA033500B1/en unknown
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
UA122909C2 (en) | 2021-01-20 |
WO2018056870A1 (en) | 2018-03-29 |
EP3348517A1 (en) | 2018-07-18 |
EP3348517A4 (en) | 2019-05-22 |
EA201800194A1 (en) | 2018-09-28 |
RU2640988C1 (en) | 2018-01-12 |
EA033500B1 (en) | 2019-10-31 |
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