GB2297605A - Shut-off assembly for a gas flow regulator - Google Patents
Shut-off assembly for a gas flow regulator Download PDFInfo
- Publication number
- GB2297605A GB2297605A GB9502239A GB9502239A GB2297605A GB 2297605 A GB2297605 A GB 2297605A GB 9502239 A GB9502239 A GB 9502239A GB 9502239 A GB9502239 A GB 9502239A GB 2297605 A GB2297605 A GB 2297605A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shut
- valve assembly
- assembly according
- spindle
- latching mechanism
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/042—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with locking or disconnecting arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
An under-pressure and/or over-pressure shut-off assembly for a gas flow regulator comprises a latch 37 having splines 41 engaging a bush 39 to hold a spindle 31, carrying a valve member 33, retracted aginst the force of a spring 35. A chamber 9 is pressuurised by the regulated fluid. Over-pressure and under-pressure causes a diaphragm 8 to move up and down respectively, and causes lever 21 to be pivotted about its end 27. Sufficient movement of the lever causes its other end to move out of engagement with bearing 53 carried by the latch. This causes the latch to pivot about pivot 45 under the action of spring 35 and splines 41 to slide into channels (40, figure 5) of bush 39 allowing spindle 31 and valve member 33 to move to close orifice (O, figure 2) of the regulator(R). A face plate 10 of the valve is one of a series of interchgeable plates for attaching the assembly to the regulator. The valve member and spindle are removeable and are one of a series of interchangeable valves and spindles.
Description
SHUT-OFF VALVE ASSEMBLY FOR A GAS FLOW REGULATOR
This invention relates to shut-off valve assemblies for use in conjunction with gas flow regulators.
Commonly, a shut-off valve assembly is fitted to a gas flow regulator and senses outlet pressure of the regulator at an outlet side of an orifice located in the regulator. In the event of an over or under pressure being sensed, the valve assembly operates to shut off gas flow through the orifice at an inlet side of the orifice.
Such shut-off valve assemblies are used in gas distribution systems for both the industrial and domestic markets all over the world and in particular in Great Britain, Germany, North America and associated markets. The valve assemblies must meet various legal and safety requirements which may differ from country to country or State to State, for example, fire safety requirements. At present such valve assemblies must meet German "domestic fire-safe" standards if they are for domestic use in Germany. Additionally, the valve assembly may need to be constructed so as to enable it to be fitted to a particular manufacturerws gas flow regulator construction. As a result, different valve assembly constructions must be manufactured for marketing in respective countries.This entails increased costs in terms of manufacturing equipment, required machine precision tolerances and raw materials, for example, for manufacturers aiming to cater to the worldwide market.
According to a first aspect of the present invention a shut-off valve assembly for a gas flow regulator comprises a body assembly and a removable face plate mounted on the body assembly for attachment of the valve assembly to the gas flow regulator.
The removable face plate is preferably one of a series of removable interchangeable face plates provided for use with the body assembly.
Preferably each one of the series of removable face plates adapts the shut-off valve assembly to meet specific operational requirements. The specific operational requirements may be national requirements.
In this manner a standard body assembly may be manufactured for worldwide use, the body assembly being adapted to meet specific national requirements by the choice of removable face plate which is mounted on the body assembly. This construction realises a significant reduction in manufacturing costs.
Preferably the body assembly comprises a die-cast aluminium body. The body thus requires only minimum machining.
The shut-off valve assembly may further comprise a spindle provided with a valve at one end for stopping a flow of gas through the regulator. Preferably, the valve and the spindle are removable. The removable valve and spindle may be chosen from a series of removable, interchangeable valves and spindles provided for use with the body assembly and respective ones of the series of removable interchangeable face plates.
The removable face plate may be adapted to enable a fire proof seal to be provided between the shut-off valve assembly and the gas flow regulator.
The removable face plate is preferably made of stainless steel.
In one embodiment, the valve assembly preferably further comprises sealing means for sealing the valve assembly to the gas flow regulator. The sealing means is preferably provided on the removable face plate.
Such an embodiment may be suitable for use in the
United Kingdom and America.
In another embodiment, the valve assembly may further comprise a fireproof gasket for sealing the valve assembly to the gas flow regulator at fire temperatures. Such an embodiment may be preferably suitable for domestic firesafe application in Germany.
In a further embodiment, the face plate may comprise a mating spigot for attachment to the gas flow regulator. The mating spigot may be made of stainless steel.
The invention thus enables a lower cost fire safe shut-off valve assembly to be provided since the body assembly need not be manufactured of entirely fire-safe components in order to effect a seal between the valve assembly and the gas flow regulator at fire temperatures.
Known shut-off valve assemblies often comprise internal latching mechanisms which are operable to shut off gas flow through the regulator orifice in the event of an over and/or under pressure condition. In order to provide a shut-off valve having high sensitivity and repeatable performance known latching mechanisms have required components manufactured to high tolerances.
Such components have been custom built at relatively high cost.
According to a second aspect of the invention, in a shut-off valve assembly for a gas flow regulator comprising a housing, a diaphragm located within the housing, the housing and the diaphragm together defining a pressure chamber, an inlet in a wall of the housing and in communication with the pressure chamber, spring means for counterbalancing pressure exerted on the diaphragm, a lever associated with the diaphragm and adapted to pivot at one end, a spindle provided with a bushing, the spindle being movable axially and relative to the housing, one end of the spindle being provided with a valve for stopping a flow of gas through the regulator, biasing means for biasing the spindle towards a fully extended position, and a latching mechanism for retaining the spindle in a retracted position, the latching mechanism being adapted for pivotal movement and one end of the lever being adapted to retain the latching mechanism in a latched position, the bushing comprises a channel and the latching mechanism comprises a spline adapted to engage with the channel in an unlatched position of the latching mechanism.
Preferably, in a latched position of the latching mechanism, the spline rests against a portion of the bushing in order to retain the spindle in the retracted position.
Preferably, in the unlatched position, the spindle is released from the retracted position.
This arrangement enables exceptional consistency of operation of the shut-off valve assembly to be achieved and has been found to achieve substantial insensitivity to nuisance "tripping" or actuation of the valve due to external impacts and/or vibration.
The latching mechanism may comprise a roller bearing for engagement with the end of the lever adapted to retain the latching mechanism in the latched position. Preferably the roller bearing is a needle roller bearing.
The valve assembly may further comprise a lever retaining plate for retaining the end of the lever which is adapted to pivot. This arrangement avoids the need for a pivot pin manufactured to high tolerances.
The lever is preferably adapted to disengage with the roller bearing in order to unlatch the latching mechanism when the pressure in the chamber increases above a predetermined threshold value. The lever may also be adapted to disengage with the roller bearing in order to unlatch the latching mechanism when the pressure in the chamber decreases below a predetermined value. Alternatively, the latching mechanism may comprise a further roller bearing which is adapted to retain the latching mechanism in a latched position when the pressure in the chamber decreases below a predetermined value.
The latching mechanism may further comprise a pivot pin located in a notch in the housing and retained in the notch by the spindle. The pivot pin may be a needle roller bearing.
The housing may be a one-piece body. Preferably, the body is a one-piece die-cast aluminium body.
The shut-off valve assembly thus utilises relatively low-cost proprietary components where possible in order to obtain the desired lever and latching mechanisms.
The bushing may be of substantially H-shaped cross-section. The bushing preferably comprises two channels and the latching mechanism preferably comprises two splines, each spline being adapted to engage with a respective channel in the bushing in the unlatched position of the latching mechanism.
The shut-off valve assembly may further comprise a spring holder for holding the spring means for counterbalancing pressure exerted on the diaphragm.
Preferably, the spring holder is located for sliding movement in the housing. The diaphragm is preferably incorporated in a diaphragm assembly. The spring holder and the diaphragm assembly are preferably arranged such that the diaphragm assembly is in contact with the lower end of the spring holder at normal working pressures in the chamber. This arrangement enables a relatively compact structure to be achieved in the shut-off valve assembly.
The shut-off valve assembly may further comprise reset means by which the latching means may be reset to its latched position.
Embodiments of the invention will now be described by way of example only, with reference to the accompanying drawings, in which:
Figure 1 is a cross-sectional side view of one
embodiment of a shut-off valve assembly according
to one aspect of the invention, in which a
latching mechanism is shown in its latched
position;
Figure 2 is a schematic part cross-sectional
side view of the shut-off valve assembly of
Figure 1, attached to a gas flow regulator;
Figure 3 is a cross-sectional side view of a
shut-off valve assembly according to one aspect of
the invention, in which a latching mechanism is
shown in its unlatched position in an overpressure
condition;
Figure 4 is a cross-sectional side view of the
shut-off valve assembly of Figure 3, in which the
latching mechanism is shown in its unlatched
position in an underpressure condition;;
Figure 5 shows a perspective view of two
component parts of the shut-off valve assemblies
of Figures 1 and 3;
Figure 6 is an end view of the shut-off valve
assembly of Figure 1; and
Figure 7 shows a perspective view of two
removable, interchangeable face plates.
Referring to Figures 1 and 2, a shut-off valve assembly 1 for a gas flow regulator R comprises a housing 3 having a inlet 5 in a front wall 7 of the housing through which gas from an outlet of the regulator enters a pressure chamber 9 defined by the housing 3 and a diaphragm 8 incorporated a diaphragm assembly 11 which is located within the housing. The housing 3 comprises a lower portion 2 and an upper portion 4.
A removable face plate 10 is mounted on the front wall 7 of the housing for attaching the shut-off valve assembly to the gas flow regulator R. The face plate 10 is one of two different interchangeable face plates (shown in Figure 7) which adapt the valve assembly to meet different construction requirements.
The plate 10 comprises an inlet 12, in communication with the inlet 5 of the housing.
Springs 13, 15 are provided for counterbalancing pressures exerted on the diaphragm assembly by gas in the chamber 9.
The spring 13 is located in a hollow spring holder 17 which is fitted for sliding movement in the housing and the spring is set to a predetermined threshold pressure or "overpressure". The spring 15 is located within the hollow spring holder, coaxially with the spring 13, a lower end of the spring 15 being mounted on the diaphragm assembly 11. The spring 15 is set to a predetermined low pressure or "underpressure". At normal working pressures in the chamber a lower end 19 of the spring holder 17 rests on the diaphragm assembly 11.
A lever 21 is pivotally attached to a central portion 23 of the diaphragm assembly 11 which extends downwardly away from the springs 13, 15. One end 27 of the lever is constrained to move pivotally in the housing by a retaining plate 25 which locates the end 27 against a projecting lug 29 of the lower portion 2 of the housing.
A spindle 31 extends through the housing and the face plate 10, passing through the chamber 9, and is movable axially and relative to the housing. A valve 33 is removably mounted on one end of the spindle for shutting off a flow of gas through a regulator which is mounted on the removable face plate 10 of the shut-off valve assembly, in use. A valve actuating spring 35 is provided for biasing the spindle 31 towards a fully extended position. At normal working pressures in the chamber the spindle 31, and spring 35 are held in a retracted position by means of a latch 37 which engages with a bushing 39 mounted on the spindle 31 in a latched position as shown in Figure 1.
The bushing 39 is of substantially H-shaped cross-section as shown in Figure 5, having two parallel grooves or channels 40 which are substantially parallel to the spindle when the bushing is mounted thereon.
The valve 33 and spindle 31 are removable from the shut-off valve assembly and are chosen from two pairs of different removable, interchangeable valves and spindles, each pair being provided for use with a respective removable face plate 10.
The latch 37 is located for pivotal movement about a pivot pin 45 which is constrained in a notch 47 in the housing by means of the spindle 31. The latch 37, also shown in Figure 5, comprises splines 41 and in its latched position the latch is pivoted such that a tapered end 49 of each spline rests against front face 43 of the bushing 39 so as to retain the spindle 31 in a retracted position. The latch is held in this pivoted position by means of an end surface 51 of the lever 21 which engages tangentially with a needle roller bearing 53 mounted in the latch 37. In this embodiment the bearing 53 is a stainless steel pin.
In use, at normal working pressures of approximately 20 to 25 mbar in the pressure chamber 9, the latch 37 is retained in its latched state. The overpressure spring 13 is set to "trip" the shut-off valve assembly at a pressure somewhere between 25 and 210 mbar and the underpressure spring 15 is set to trip the valve assembly at a pressure somewhere between 8 and 20 mbar. The gas regulator inlet pressure at A, shown in Figure 2, is approximately 8 bar.
When the chamber pressure, which is determined by the regulator outlet pressure, increases to approximately 90% of the overpressure set by the overpressure spring 13, the diaphragm assembly 11 begins to move upwards against the spring 13 and its holder 19. The underpressure spring 15 is then inactive. The moving diaphragm assembly pulls the lever 21 upwards across the roller bearing 53 of the latch 37. The lever pivots at its end 27, held by the retaining plate 25. If the chamber pressure reaches the trip pressure the lever is pulled off the bearing 53 and the latch pivots under the action of the force provided by the valve actuating spring 35. The splines 41 of the latch slide into the respective channels 40 of the H-shaped bushing 39 allowing the spindle to move towards the face plate 10 and the valve 33 to close onto an orifice within the regulator in order to stop the flow of gas through the regulator. Figure 3 shows the latch 37 in its unlatched state where an overpressure exists in the chamber 9.
Alternatively, when the chamber pressure decreases to about 120% of the underpressure set by the underpressure spring 15, the diaphragm assembly 11 moves downwards under the action of the spring 15. The upper portion 4 of the housing comprises a stop 24 which engages with a flange 26 on the spring holder 17 to prevent the holder moving downwards with the diaphragm assembly, so that the overpressure spring 13 is then inactive as it is held by the spring holder which is no longer in contact with the diaphragm assembly 11. The diaphragm assembly pulls the lever 21 downwards and if the chamber pressure falls below the trip pressure of the spring 15 the lever is pulled off the bearing 53 of the latch 37.The latch pivots under the action of the force provided by the valve actuating spring 35 and the splines 41 slide into the respective channels 40 of the H-shaped bushing 39, allowing the spindle to move forwards and the valve 33 to close over the orifice of the regulator. Figure 4 shows the latch 37 in its unlatched state where an underpressure exists in the chamber 9.
In an alternative embodiment, in which the shut-off valve assembly is sensitive only to overpressure, the latch 37 further comprises an additional stainless steel pin 63 located in an aperture 55 (shown in Figure 1) generally below the bearing 53. The pin 63 stops the lever 21 from falling and allowing valve 33 to shut-off gas flow A through the regulator orifice 0, shown in Figure 2, when the chamber is at relatively low pressures. In a modification of this embodiment the underpressure spring is further removed.
In a further alternative embodiment, in which the shut-off assembly is sensitive only to underpressure, the overpressure spring 13 is replaced by a solid tube which prevents the diaphragm assembly 11 moving upwards at relatively high chamber pressures.
The latch of any of the described embodiments may be reset by means of a reset knob 57 located on the end of the spindle opposing the end comprising the valve 33. The reset knob is located below a rear cover 59 of the housing 3 as shown in Figure 1. [The embodiments of Figures 3 and 4 show an alternative construction of the rear cover 59.] Once the chamber pressure has returned to normal working pressure the spindle may be pulled back by means of the reset knob until the bushing 39 engages with an engagement portion 61 of the latch 37 causing the latch to pivot, thereby allowing the lever 21 to move freely with the diaphragm assembly 11 until it engages with bearing 53 of the latch 37. When the spindle is then released the front face 43 of the bushing 39 engages with the splines 41 to retain the valve 33 and the spindle 31 in their retracted position.
For non-firesafe applications the face plate 10 is a cast stainless steel plate 10a shown in Figures 6 and 7, the housing being made of aluminium. Standard nitrile 'O'-rings 14,16 are provided for sealing the valve assembly 1 to the regulator.
For firesafe applications, such as for use with
Jeavons Engineering Ltd's gas service regulators, the face plate 10 is a stainless steel plate 10a, shown in
Figure 7, and a thin fireproof gasket is clamped between the plate and the regulator, which is usually of iron. 'O'-rings 14, 16 seal the valve assembly 1 to the regulator at normal temperatures. At fire temperatures the 'O'-rings burn and the gasket keeps gas leakage from the regulator within allowable limits. A disc gasket is also provided for use with one of the 'O'-rings 14 around the spindle and the valve actuating spring 35 is made of a Nimonic fireproof material.
For firesafe applications, in conjunction with the
Elster type of regulator which requires a larger diameter valve 33 and consequently a larger valve orifice in the face plate 10, a stainless steel plate 10b, shown in Figure 7, is used. The plate 10b comprises a mating spigot 50, also of stainless steel, which fits into a socket on the Elster regulator.
O-rings 14, 16 seal the shut-off valve assembly to the regulator at normal temperatures but at fire temperatures, after these O-rings have burned, a gasket of fireproof material clamped between the face plate and the regulator keeps gas leakage from the regulator within allowable limits.
In an alternative embodiment, the housing 3 is a one-piece die-cast aluminium body adapted to be mounted on a gas flow regulator without the need for a removable face plate 10.
Claims (25)
1. A shut-off valve assembly for a gas flow regulator, comprising a body assembly and a removable face plate mounted on the body assembly for attaching the valve assembly to the gas flow regulator.
2. A shut-off valve assembly according to claim 1, in which the removable face plate is one of a series of removable interchangeable face plates provided for use with the body assembly.
3. A shut-off valve assembly according to claim 1 or claim 2, in which the shut-off valve assembly is adapted to meet specific construction requirements by means of the removable face plate.
4. A shut-off valve assembly according to any preceding claim, further comprising a fireproof gasket adapted to seal the valve assembly to the gas flow regulator at fire temperatures.
5. A shut-off valve assembly according to any preceding claim, in which the body assembly comprises a die-cast aluminium body.
6. A shut-off valve assembly according to any preceding claim, in which the removable face plate is a stainless steel plate.
7. A shut-off valve assembly according to any preceding claim, further comprising a spindle provided with a valve at one end for stopping gas flow through the regulator, and wherein the valve and spindle are both removable.
8. A shut-off valve assembly according to claim 7, in which the valve and spindle are one pair of a series of removable, interchangeable valve and spindle pairs prbvided for use with respective ones of the series of removable interchangeable face plates.
9. A shut-off valve assembly for a gas flow regulator, comprising a housing, a diaphragm located within the housing, the housing and the diaphragm together defining a pressure chamber, an inlet in a wall of the housing and in communication with the pressure chamber, spring means for counterbalancing pressure exerted on the diaphragm, a lever associated with the diaphragm and adapted to pivot at one end, a spindle provided with a bushing, the spindle being moveable axially and relative to the housing, and one end of the spindle being provided with a valve for stopping a flow of gas through the regulator, biasing means for biasing the spindle towards a fully extended position, and a latching mechanism for retaining the spindle in a retracted position, the latching mechanism being adapted for pivotal movement and one end of the lever being adapted to retain the latching mechanism in a latched position, in which the bushing comprises a channel and the latching mechanism comprises a spline adapted to engage with the channel in an unlatched position of the latching mechanism.
10. A shut-off valve assembly according to claim 9, in which, in a latched position of the latching mechanism, the spline rests against a portion of the bushing in order to retain the spindle in the retracted position.
11. A shut-off valve assembly according to claim 9 or claim 10, in which, in the unlatched position of the latching mechanism, the spindle is released from the retracted position.
12. A shut-off valve assembly according to any of claims 9, 10 and 11, in which the bushing comprises two channels and the latching mechanism comprises two splines, each spline being adapted to engage with a respective channel in the bushing in the unlatched position of the latching mechanism.
13. A shut-off valve assembly according to any of claims 9 to 12, in which the bushing is of substantially H-shaped cross-section.
14. A shut-off valve assembly according to any of claims 9 to 13, in which the latching mechanism comprises a roller bearing which engages with one end of the lever in order to retain the latching mechanism in the latched position.
15. A shut-off valve assembly according to claim 14, in which the lever is adapted to disengage with the roller bearing, so as to unlatch the latching mechanism, when the pressure in the chamber increases above a pre-determined threshold value.
16. A shut-off valve assembly according to claim 14 or claim 15, in which the lever is adapted to disengage with the roller bearing, so as to unlatch the latching mechanism, when the pressure in the chamber decreases below a predetermined value.
17. A shut-off valve assembly according to claim 14, in which the roller bearing is a needle roller bearing.
18. A shut-off valve assembly according to any of claims 14 to 17, in which the latching mechanism further comprises a further roller bearing which is adapted to retain the latching mechanism in a latched position when the pressure in the chamber decreases below a predetermined value.
19. A shut-off valve assembly according to any of claims 9 to 18, further comprising a lever-retaining plate for retaining that end of the lever which is adapted to pivot.
20. A shut-off valve assembly according to any of claims 9 to 19, in which the latching mechanism further comprises a pivot pin located in a notch in the housing and retained in the notch by the spindle.
21. A shut-off valve assembly according to any of claims 9 to 20, further comprising a spring holder for holding the spring means, the spring holder being located for sliding movement in the housing.
22. A shut-off valve assembly according to claim 21, in which the diaphragm is incorporated in a diaphragm assembly and the spring holder and the diaphragm assembly are arranged such that the diaphragm assembly is in contact with a lower end of the spring holder at normal working pressures in the chamber.
23. A shut-off valve assembly according to any of claims 9 to 22, further comprising reset means by which the latching means may be reset to its latched position.
24. A shut-off valve assembly substantially as herein described and with reference to Figures 1, 2, 5, 6 and 7 of the accompanying drawings.
25. A shut-off valve assembly substantially as herein described and with reference to Figures 3 and 4 of the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9502239A GB2297605A (en) | 1995-02-04 | 1995-02-04 | Shut-off assembly for a gas flow regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9502239A GB2297605A (en) | 1995-02-04 | 1995-02-04 | Shut-off assembly for a gas flow regulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9502239D0 GB9502239D0 (en) | 1995-03-29 |
| GB2297605A true GB2297605A (en) | 1996-08-07 |
Family
ID=10769129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9502239A Withdrawn GB2297605A (en) | 1995-02-04 | 1995-02-04 | Shut-off assembly for a gas flow regulator |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2297605A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2786242A1 (en) * | 1998-11-24 | 2000-05-26 | Fiorentini Minireg Spa | LOW AND HIGH PRESSURE SHUT-OFF VALVE |
| GB2346675A (en) * | 1999-02-11 | 2000-08-16 | Cooper Cameron Corp | Valve actuator with pressure triggered emergency shutdown |
| WO2008131153A3 (en) * | 2007-04-20 | 2009-03-05 | Fisher Controls Int | Slam shut safety device |
| CN101663520B (en) * | 2007-04-20 | 2012-05-30 | 费希尔控制产品国际有限公司 | Slam shut safety device |
| DE102011005260B3 (en) * | 2011-03-08 | 2012-06-14 | Tyczka Totalgaz Gmbh | Safety shut-off valve and method for shutting off a gas line |
| WO2012141886A1 (en) * | 2011-04-15 | 2012-10-18 | Emerson Process Management Regulator Technologies, Inc. | Fail safe retaining assembly for a slam-shut safety device |
| WO2011139568A3 (en) * | 2010-04-27 | 2014-06-05 | Dresser, Inc. | Pneumatic controlled slam shut valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB707522A (en) * | 1952-07-26 | 1954-04-21 | Harry E La Bour | Improvements in or relating to flow restricting valves |
| GB883301A (en) * | 1957-03-25 | 1961-11-29 | Primore Sales Inc | Improvements in or relating to shut-off valves for refrigeration units |
| GB1063139A (en) * | 1964-01-08 | 1967-03-30 | Dole Valve Co | Improvements in or relating to fluid control valves |
| GB1518511A (en) * | 1975-02-24 | 1978-07-19 | Weatherhead Co | Exhaust brake valve assembly |
| US4582082A (en) * | 1984-01-09 | 1986-04-15 | Joucomatic S.A. | Piston-driven valves |
-
1995
- 1995-02-04 GB GB9502239A patent/GB2297605A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB707522A (en) * | 1952-07-26 | 1954-04-21 | Harry E La Bour | Improvements in or relating to flow restricting valves |
| GB883301A (en) * | 1957-03-25 | 1961-11-29 | Primore Sales Inc | Improvements in or relating to shut-off valves for refrigeration units |
| GB1063139A (en) * | 1964-01-08 | 1967-03-30 | Dole Valve Co | Improvements in or relating to fluid control valves |
| GB1518511A (en) * | 1975-02-24 | 1978-07-19 | Weatherhead Co | Exhaust brake valve assembly |
| US4582082A (en) * | 1984-01-09 | 1986-04-15 | Joucomatic S.A. | Piston-driven valves |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2786242A1 (en) * | 1998-11-24 | 2000-05-26 | Fiorentini Minireg Spa | LOW AND HIGH PRESSURE SHUT-OFF VALVE |
| GB2346675A (en) * | 1999-02-11 | 2000-08-16 | Cooper Cameron Corp | Valve actuator with pressure triggered emergency shutdown |
| US6152167A (en) * | 1999-02-11 | 2000-11-28 | Cooper Cameron | Valve actuator with emergency shutdown feature |
| SG80668A1 (en) * | 1999-02-11 | 2001-05-22 | Cooper Cameron Corp | Valve actuator with emergency shutdown feature |
| GB2346675B (en) * | 1999-02-11 | 2001-07-18 | Cooper Cameron Corp | Valve actuator with emergency shutdown feature |
| RU2472052C2 (en) * | 2007-04-20 | 2013-01-10 | Фишер Контролз Интернешнэл Ллс | Quick-acting safety device; assembly method of that device, and valve |
| CN102628518B (en) * | 2007-04-20 | 2015-02-18 | 费希尔控制产品国际有限公司 | Slam shut safety device |
| US8225812B2 (en) | 2007-04-20 | 2012-07-24 | Fisher Controls International Llc | Slam shut safety device |
| CN101663520B (en) * | 2007-04-20 | 2012-05-30 | 费希尔控制产品国际有限公司 | Slam shut safety device |
| WO2008131153A3 (en) * | 2007-04-20 | 2009-03-05 | Fisher Controls Int | Slam shut safety device |
| EP2610534A1 (en) * | 2007-04-20 | 2013-07-03 | Fisher Controls International Llc | Slam shut safety device |
| RU2608846C2 (en) * | 2007-04-20 | 2017-01-25 | Фишер Контролз Интернешнэл Ллс | Quick-acting safety valve, quick-acting safety device and method of assembling of said device |
| JP2014098544A (en) * | 2007-04-20 | 2014-05-29 | Fisher Controls International Llc | Emergency shutdown safety device |
| US8794260B2 (en) | 2007-04-20 | 2014-08-05 | Fisher Controls International Llc | Slam shut safety device |
| US9027581B2 (en) | 2010-04-27 | 2015-05-12 | Dresser, Inc. | Pneumatic controlled slam shut valve |
| WO2011139568A3 (en) * | 2010-04-27 | 2014-06-05 | Dresser, Inc. | Pneumatic controlled slam shut valve |
| DE102011005260B3 (en) * | 2011-03-08 | 2012-06-14 | Tyczka Totalgaz Gmbh | Safety shut-off valve and method for shutting off a gas line |
| WO2012141886A1 (en) * | 2011-04-15 | 2012-10-18 | Emerson Process Management Regulator Technologies, Inc. | Fail safe retaining assembly for a slam-shut safety device |
| JP2014510891A (en) * | 2011-04-15 | 2014-05-01 | エマーソン プロセス マネージメント レギュレーター テクノロジーズ インコーポレイテッド | Fail-safe retaining plug assembly for slam shut safety devices |
| RU2586806C2 (en) * | 2011-04-15 | 2016-06-10 | Эмерсон Процесс Менеджмент Регьюлэйтор Текнолоджиз, Инк. | Fail-safe unit fixing plug for high-speed safety locking device |
| US8616521B2 (en) | 2011-04-15 | 2013-12-31 | Emerson Process Management Regulator Technologies, Inc. | Fail safe retaining plug assembly for a slam-shut safety device |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9502239D0 (en) | 1995-03-29 |
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| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |