WO2019226536A1

WO2019226536A1 - Accumulator charging system and method of use

Info

Publication number: WO2019226536A1
Application number: PCT/US2019/033094
Authority: WO
Inventors: Michael Mahaney
Original assignee: Poseidon Deepwater Solutions Llc
Priority date: 2018-05-20
Filing date: 2019-05-20
Publication date: 2019-11-28

Abstract

An accumulator charging system and method of use of an accumulator charging system are described wherein a valve system and installation tool provide for an installer fault proof connection to a blow out preventer.

Description

ACCUMULATOR CHARGING SYSTEM AND METHOD OF USE

CROSS REFERENCE TO RELATED APPLICATIONS

[001] The present application claims priority to United States Provisional Application 62/673,923 filed on May 20, 2018, the entirety of which is incorporated by reference.

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR

DEVELOPMENT

[002] None.

FIELD OF THE DISCLOSURE

[003] Aspects of this disclosure later charging a gas reservoir, typically on a hydraulic unit. More specifically, aspects of the disclosure related to blowout preventer hydraulic energy storage systems for oil and gas exploration and operation of accumulator charging systems.

BACKGROUND INFORMATION

[004] Hydraulic accumulators typically use nitrogen or helium as the energy storage medium in blow out preventer apparatus used in oil and gas recovery operations. As gases located in a closed container are at a specific volume, usually a metal cylindrical or dome-shaped container, if other materials enter the dosed container, the gas will compress. Accumulators have different operating methods wherein some provide a method of separating a hydraulic fluid from the gas charge, while some accumulators allow the gas to come into contact with the hydraulic fluid. When the hydraulic fluid is forced into the chamber, the gas compresses and energy is stored within the accumulator. At a later time, the hydraulic fluid can then be released from the accumulator with similar pressure that was forced into the accumulator, thereby relieving the pressure within the accumulator when the gas charge expands.

[005] For accumulators, the gas must be introduced and trapped within the accumulator at a pressure higher than atmospheric pressure. This process is known as pre-charging. During pre-charging, a common valve used is a military style valve, which requires a registered open and close. Common military style valves are illustrated in FIGS, 1 through 4, In these military style valves, the valve mechanically seats a poppet portion against the valve body, and this action creates a metal on metal seal. Over time, however, normal use can wear out the sealing interface, and over tightening by the user can also damage the seal prematurely. Furthermore, the valves can be inadvertently unscrewed while trying to open the valve, and this allows the seal between the valve in the accumulator to become extruded and damaged. To eliminate this potential, it is recommended to use two wrenches on the valve so that loosening does not occur, wherein one holds the valve and prevents rotating in the accumulator, and the other to turn a hex configuration which opens the valve.

[006] Some conventional valves are more robust, for example larger versions of the original valve. Others having created a stronger seal seat to hex wrench interface. There have been some alternative designs that use a completely different sealing system and method of opening the valve, such as a HYDAC valve, illustrated in FIGS. 5 and 6. All of these solutions, however, have low life expectancy and a high degree of user-induced damage. The typical life of these valves is very short compared to the desired usage and life of blowout preventer control systems. Use of these deficient types of valve arrangement, however, continues as these systems are the best conventional apparatus for the anticipated environments.

[007] There is also a distinct danger of opening an accumulator or valve or attempting to remove components related to these systems while there is still pressure within the accumulator or system. The operator may not realize the presence of pressure until it is too late wherein significant pressure may escape and injure the operator. Miscommunication and unskilled technicians can find themselves in dangerous situations without warning. Even the most seasoned technician can become complacent with the task and remove components under pressure. [008] Accumulators may be stacked in a blow out preventer, to allow for sufficient energy storage to accomplish isolation tasks needed to maintain well integrity if well integrity is not maintained, severe economic and environmental consequences may occur, including a well blowout, where the stored hydrocarbons escape the formation in a violent eruption.

[009] There exists a need for a valve that overcomes all of these operational, maintenance and construction challenges. There is a need to provide an accumulator valve that is more reliable in a sealing system compared to conventional apparatus.

[010] There is an additional need to be able to seal gas with no contact forces which extends the life of the valve.

[011] There is an additional need allow a technician to be notified in advance of pressure when trying to remove the valve

[012] There is an additional need to be able to lock a valve and not allow the valve to be rotated well under pressure and during normal operation.

[013] There is a further need to provide for maintenance work to be accomplished on an accumulator such that these vital pieces of equipment are maintained at extremely high levels of quality.

SUMMARY

[014] So that the manner in which the above recited features of the present disclosure can be understood in detail, a more particular description of the disclosure, briefly summarized below, may be had by reference to embodiments, some of which are illustrated in the drawings. It is to be noted that the drawings illustrate only typical embodiments of this disclosure and are therefore not to be considered limiting of its scope, for the disclosure may admit to other equally effective embodiments without specific recitation. Accordingly, the following summary provides just a few aspects of the description and should not be used to limit the described embodiments to a single concept.

[015] In one non-limiting embodiment, a valve arrangement is disclosed. In this embodiment, the valve arrangement is configured to allow a fluid to flow from a pressurized fluid source to a chamber, comprising a valve body having a bore and a side port, wherein the bore is connected to the side port, a valve stem positioned in the bore, the valve stem having a flange of a greater diameter than a diameter of a remainder of the valve stem, at least one piston within the valve body, the at least one piston is configured to move from a first position to a second position, and wherein a movement of the at least one piston moves the valve stem, at least one elastomeric seal positioned around the valve stem and at least one flange_t wherein the flange is located one of on and in the valve body, wherein the flange is configured to accept an installation pin arrangement, and wherein when the valve stem is in a closed position, the flange of the valve stem contacts the valve body arid the elastomeric seal provides a seal between the valve stem and the valve body.

[016] In one non-limiting embodiment, a valve arrangement is disclosed, wherein the valve arrangement is configured to allow a fluid to flow from a pressurized fluid source to a chamber, comprising a valve body having a bore, a side port and a top port, wherein the bore is connected to the side port and the top port is threaded, a valve stem positioned in the bore, the valve stem having a flange of a greater diameter than a diameter of a remainder of the valve stem, at least one piston within the valve body, the at least one piston is configured to move from a first position to a second position, and wherein a movement of the at least one piston moves the valve stem, at least one elastomeric seal positioned around the valve stem and at least one flange, wherein the flange is located one of on and in the valve body, wherein the flange is configured to accept an installation pin arrangement, and wherein when the valve stem is in a closed position, the flange of the valve stem contacts the valve body and the elastomeric seal provides a seal between the valve stem and tire valve body and a charging tool configured to interface with valve body wherein upon installation of the charging tool to the valve body, a gas is ported from the pressurized fluid source to a space in between two seals in the charging tool, thereby providing a flow of fluid through the valve body.

[017] In another non-limiting embodiment, a method of operating an accumulator charging system is disclosed comprising placing a valve body in contact with an accumulator, the valve body comprising a first bore, a flange and at least one side port; and connecting the valve body to the accumulator charging system using an arrangement of pins on an installation tool that interface with the flange of the valve body, wherein the connecting of the valve body to the accumulator uses an internal jacking screw within the valve body.

[018] Other aspects and advantages will become apparent from the following description and the attached claims.

BRIEF DESORPTION OF THE DRAWINGS

[019] So that the manner in which the above recited features of tire present disclosure can be understood in detail, a more particular description of the disclosure, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the drawings. It is to be noted, however, that the appended drawings illustrate only typical embodiments of this disclosure and are therefore not be considered limiting of its scope, for the disclosure may admit to other equally effective embodiments.

[020] FIG. 1 is a side cross-sectional view of a prior art military charging valve.

[021] FIG. 2 is an isometric view of the military charging valve of FIG.1.

[022] FIG. 3 is a side cross-sectional view of a prior art improved military charging valve. [023] FIG. 4 is an isometric view of the military charging valve of FIG. 3.

[024] FIG, 5 is a side view of a HYDAC prior art charging valve.

[025] FIG. 6 is a cross-sectional view of the charging valve of FIG. 5.

[026] FIG, 7 is a side view of a valve installed on an accumulator in one non-limiting embodiment of the disclosure.

[027] FIG. 8 is a cross-sectional view of the valve of FIG 7.

[028] FIG. 9 is a cross-sectional View of the elastomeric seal of FIG. 8.

[029] FIG 12 is a side view of an installation tool engaging the valve of FIG. 7.

[030] FIG. 13 is a perspective view of the installation tool of FIG. 12.

[031] FIG. 14 is a cross-sectional view of the installation tool of FIG. 12 installed on the valve of FIG. 7.

[032] FIG, 15 is a method of operating an accumulator charging system

[033] FIG. 16 is a side view of a charging tool in accordance with an example embodiment of the disclosure.

[034] FIG, 17 is a side view of a charging tool in accordance with an example embodiment of the disclosure.

[035] FIG. 18 is a side view of a charging tool in accordance with an example embodiment of the disclosure. [036] To facilitate understanding, identical reference numerals have been used, where possible, to designate identical elements that are common to the figures ("FIGS"). It is contemplated that elements disclosed in one embodiment may be beneficially utilized on other embodiments without specific recitation.

DETAILED DESCRIPTION

[037] In the following, reference is made to embodiments of the disclosure. It should be Understood, however, that the disclosure is not limited to specific described embodiments. Instead, any combination of the following features and elements, whether related to different embodiments or not, is contemplated to implement and practice the disclosure. Furthermore, although embodiments of the disclosure may achieve advantages over other possible solutions and/or over the prior art, whether or not a particular advantage is achieved by a given embodiment is not limiting of foe disclosure. Thus, the following aspects, features, embodiments and advantages are merely illustrative and are not considered elements or limitations of foe claims except where explicitly recited in a claim. Likewise, reference to“the disclosure" shall not be construed as a generalization of inventive subject matter disclosed herein and shall not be considered to be an element or limitation of foe claims except where explicitly recited in a claim.

[038] Although foe terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, components, region, layer or section from another region, layer or section. Terms such as“first",“second" and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed herein could be termed a second element, component, region, layer or section without departing from foe teachings of the example embodiments, [039] When an element or layer is referred to as being“on,” "engaged to,”“connected to,” or“coupled to” another element or layer, it may be directly on, engaged, connected, coupled to the other element or layer, or interleaving elements or layers may be present. In contrast, when an element is referred to as being "directly on,"“directly engaged to/ “directly connected to,” or“directly coupled to” another element or layer, there may be no interleaving elements or layers present Other words used to describe the relationship between elements should be interpreted in a like fashion. As used herein, the term “anchor” includes any and all combinations of one or more of the associated listed terms.

[040] Some embodiments will now be described with reference to the figures. Like elements in the various figures will be referenced with like numbers for consistency. In the following description, numerous details are set forth to provide an understanding of various embodiments and/or features. It will be understood, however, by those skilled in die art, that some embodiments may be practiced without many of these details, and that numerous variations or modifications from the described embodiments are possible. As used herein, the terms "above” and “below", “up" and “down", “upper” and lower”, “upwardly" and“downwardly", and other tike terms indicating relative positions above or below a given point are used in this description to more clearly describe certain embodiments.

[041] As illustrated in FIGS. 7, 8 and 9, an embodiment of the disclosure provides for a valve 600 that allows gas to enter an accumulator 601. Details of the valve 600 are presented in FIG, 8. In this embodiment, the valve 600 has a threaded portion 602 that is threaded into a gas port 605 of the accumulator 601. The valve 600 has a valve body 900 that has the threaded portion 602 on one end and has a flange 603 that abuts a shoulder 902 when threading into the accumulator 601. This shoulder 902 has provisions for connection to a self - locking washer 604. The thread profile and configuration of the valve threaded portion 602 match an accumulator gas port 60S. Referring to FIG. 9, an elastomeric seal 619 is provided as needed to the port 605, to provide for a pressure tight connection between the valve 600 and foe accumulator 601.

[042] Referring to FIGS. 10 and 11, the top of the flange 603 has three (typically) pockets 606 that accept drive pins 701 from a tool 700 that is used for installation of the valve 600. The tool 700 is described in accordance with FIGS. 12, 13 and 14. After the flange 603, the valve body 900 extends with foe smooth diameter 607 to an end of the body, which is used by a charging tool 700, described later, that allows for the charging of the accumulator 601. The side of foe valve 600 in the smooth diameter 607 has a port 608 to allow gas in to or out of foe valve 600. The port 608, in some embodiments, incorporates a smoothed surface 609 or blending of sharp comers minimize seal damage from contact With sharp comers.

[043] Referring back to FIGS. 7, 8 and 9, the top of foe valve 600 is provided with a thread 610 to allow a jacking screw 70S (described in FIG. 14) to engage the valve body 900. A lead-in camphor 611 is provided to allow the valve body 900 to penetrate into seats 801 and expand foe seals 801, illustrated in FIG. 18, without damage. The valve 600 has a bore 612 in which a piston 613 and valve stem 614 are provided. The piston 613 has piston seals 61 S against foe inside of the valve body 900 and may be moved by the jacking screw 705 engaging foe valve body 900. The valve stem 614 extends to the bottom of foe valve body 900 where it has a flange 616. This flange 616 contacts foe bottom edge of the valve bore 612 and can create a metal to metal seal 617. The bottom edge of the bore 612 may have a conical entry 618. The valve stem 614 may be comprised of an elastomeric seal 619 above this flange 616 and a ledge 620 which retains the elastomeric seal 619. The ledge 620 extends a distance of a shaft upon the valve stem 614 and then tapers 622.

[044] In the illustrated embodiment there is a small clearance between the valve body 900, the bore 612 and the ledge 620 which acts as a flow restriction. The valve stem 614 travels in the downward direction 624 and disengages the elastomeric seal 619 before the ledge 620 is free from the bore 612 thereby resulting in a significant flow rate of fluid. If the valve stem 614 is driven downward far enough, the piston bottom edge 625 contacts the valve body 900 and forms a seal. In some cases, an elastomer may be included to assist in sealing.

[045] In the illustrated embodiment, referring to FIGS. 12, 13 and 14, a tool 700 is used to install the valve 600 instead of a standard hex wrench as used in conventional apparatus. The tool 700 has drive pins 701 that engage the pockets 606 on the valve body flange 603 described in FIG. 10. The tool 700 is sized to slip around the valve 600 and create an opening for gas flow. A transverse hole system 703 is also provided to allow gas to flow out from the tool 700.

[046] In the non-limiting embodiment, the inside 704 of the tool 700 cannpt seal against the va!Ve 600 and trap pressure. The tool 700 has a jacking screw 705 positioned inside such that when the jacking screw 705 is engaged into the valve body 900, and rotated, the jacking screw 705 either draws the tool 700 onto the valve 600 or forces it off. Above the jacking screw 705 is a square drive 707 that may be actuated by a torque wrench. The hole system 703 and the jacking screw 705 are purposely arranged such that a person cannot apply torque when drawing the toot 700 onto the valve body 900 or vice versa. The length of the jacking screw 705 and its relation to the drive pins 701 is chosen to ensure the valve 600 opens before the drive pins 701 engage the valve body flange pockets 606. The valve 600 is open when the valve stem 614 travels enough to disengage the valve 600 and allow gas flow 708. This prevents the tool 700 from applying torque unless the valve 600 ^"is open, which will warn the technician that pressure is still retained by the valve 600. Gas escaping 708 from the side ports will create a loud noise, thereby warning the technician of pressure inside the device. As wifi be understood, a minimization of the valve becoming a projectile is achieved through this design as a firm connection is maintained between the valve body 900 and the accumulator 601 at all times. Such a connection prevents the necessary use of using a "back up” wrench to prevent the valve 600 and accumulator 601 from being inadvertently disconnected during maintenance activities.

[047] The use of the tool 700, moreover; allows for quick connection to the valve body 900 in a regular and repeatable manner. Such a connection eliminates the possibility of mistakes and provides a more economical method for establishing a connection and breaking a connection to the accumulator.

[048] Referring to FIGS. 16, 17 and 18, a charging tool 800 is illustrated for allowing pressurized gas to enter into and leave the valve 600 and associated accumulator 601 once the valve 600 has been installed. The charging tool 800 has seals 801 inside which contact the smooth diameter 607 portion of the valve body 900. Wien fully installed onto the valve body 900, the seals 801 above and below the transverse ports, and gas is ported between these seals 801 via a combination of drilled holes. The body also has a central jacking screw 805 to draw the changing tool 800 onto the valve body 600 and also remove the charging tool 800 from the valve body 600. The seals 801 and body interact in such a way to cancel out or mitigate the axial forces of the tool experienced due to gas pressure. This gives the charging tool 800 a low operational force and inherent safety as there is no tendency to eject the charging tool 800 from the valve 600. The body of the charging tool 800 has no drive pins, and thus cannot apply torque to the valve main body flange 603 when operating or closing the valve 805 using the jacking screw 805. The length of the jacking screw 805 is chosen to ensure that the charging tool 800 is fully sealed onto the valve body 900 before the charging tool 800 contacts the piston 613 and opens the valve 600. The jacking screw 805 is drilled or ported to allow air to release when it is engaging the body and advancing toward the piston 613. This allows gas to enter from the most convenient location depending on application. For example, foe charging tool may be in a deep area surrounded by other components and will acquire foe top port rather than the side ports to operate. [049] The charging head is used with existing gas sources and plumbing. An adapter 807 may be used to directly charge a system, wherein the adapter 807 emulates a standard charging valve and allows a standard charging system to be used directly on the system without modification.

[050] Referring to FIG. 15, a method 1500 of operating an accumulator charging system is disclosed. At 1502 the method provides for placing a valve body in contact with an accumulator, the valve body comprising a first bore, a flange and at least one side port. At 1504 the method provides for connecting the valve body to the accumulator charging system using an arrangement of pins on an installation tool that interface with the flange of the valve body, wherein the connecting of the valve body to the accumulator uses an internal jacking screw within the valve body. At 1506 the method provides for connecting a charging tool to the valve body. At 1508 the method provides for opening a valve within the valve body. At 1510, the method provides for permitting one of a gas and a fluid to flow through the valve body and receiving one of the gas and the fluid within the accumulator. At 1512, the method provides for closing the valve with the Charging tool. At 1514 the method proceeds with connecting the installation toold that interfeces with the flange of the valve body, wherein the connecting of the valve body to the accumulator uses and internal jacking screw within toe valve body. At 1516, the method provides disconnecting the valve body from the accumulator.

[051] The illustrated embodiments provide a system and valve that overcomes the operational challenges present in the conventional apparatus. The valve describes a more reliable sealing system compared to conventional apparatus.

[052] In toe embodiments provided, gases are sealed such that there are no contact forces that will degrade the life of the valve.

[053] In toe embodiments provided, technicians are kept safe from high pressure environments when trying to remove the valve [054] In tee embodiments provided, configurations are presented that prevent a valve from being rotated when under pressure.

$055] In one non-limiting embodiment, a valve arrangement is disclosed. In this embodiment, the valve arrangement is configured to allow a fluid to flow from a pressurized fluid source to a chamber, comprising a valve body having a bore and a side port, wherein the bore is connected to the side port, a valve stem positioned in the bore, the valve stem having a flange of a greater diameter than a diameter of a remainder of the valve stem, at least one piston within the valve body, the at least one piston is configured to move from a first position to a second position, and wherein a movement of the at least one piston moves the valve stem, at least one elastomeric seal positioned around tee valve stem and at least one flange, wherein the flange is located one of on and in the valve body, wherein tee flange is configured to accept an installation pin arrangement, and wherein when the valve stem is in a closed position, the flange of the valve stem contacts the valve body and the elastomeric seal provides a seal between the valve stem and the va!Ve body.

[056] In another non-limiting embodiment, the valve arrangement may further comprise an installation tool with an installation pin arrangement, wherein the installation pin arrangement is configured to interface with the at least one flange wherein rotation of the installation tool rotates the valve body.

[057] In another non-limiting embodiment, the valve arrangement is configured wherein tee installation pin arrangement is an arrangement of drive pins.

[058] In another non-limiting embodiment, the valve arrangement may further comprise at least one self-locking washer. [059] In another non-limiting embodiment, the valve arrangement may be comprised wherein the installation tool has a jacking screw to interface with the valve.

[060] In another pop-fimiting embodiment, the valve arrangement may be configured wherein the installation tool has a hole system, the hole system configured to accept a fluid released from the valve and expel the fluid to an outside environment

[061] In another non-limiting embodiment, the valve arrangement may be configured wherein the installation tool further comprises a square drive.

[062] in one non-limiting embodiment, a valve arrangement is disclosed, wherein the valve arrangement is configured to allow a fluid to flow from a pressurized fluid source to a chamber, comprising a valve body having a bore, a side port and a top port, Wherein file bore is connected to the side port and the top port is threaded, a valve stem positioned in the bore, the valve stem having a flange of a greater diameter than a diameter of a remainder of the valve stem, at least one piston within the valve body, the at least one piston is configured to move from a first position to a second position, and wherein a movement of the at least one piston moves the valve stem, at least one elastomeric seal positioned around the valve stem and at least one flange, wherein the flange is located one of on and in the valve body, wherein the flange is configured to accept an installation pin arrangement, and wherein when the valve stem is in a closed position, the flange of the valve stem contacts the valve body and the elastomeric seal provides a seal between the valve stem and the valve body and a charging tool configured to interface with valve body wherein upon installation of the charging tool to the valve body, a gas is ported from the pressurized fluid source to a space in between two seals in the charging tool, thereby providing a flow of fluid through the valve body.

[063] In another non-limiting embodiment, the valve arrangement may further comprise a jacking screw configured to interface with the valve body. [064] In another non-limiting embodiment the valve arrangement may be configured wherein a jacking screw is used to connect the charging tool to the valve body.

[065] In another non-limiting embodiment, the valve arrangement is configured wherein the jacking screw is ported.

[066] In another non-limiting embodiment, the valve arrangement is further configured with an adapter connected to the charging tool, wherein the adapter is configured to accept a charge of fluid within the charging tool.

[067] In another non-limiting embodiment, a method of operating an accumulator charging system is disclosed comprising placing a valve body in contact with an accumulator, the valve body comprising a first bore, a flange and at least one side port; and connecting the valve body to the accumulator charging system using an arrangement of pins on an installation tool that interface with the flange of the valve body, wherein the connecting of the valve body to the accumulator uses an internal jacking screw within the valve body,

[068] In another non-limiting embodiment, the method further comprise connecting a charging tool to the valve body, wherein the connecting ports a gas from the pressurized fluid_: source to a space in between two seals in the charging tool.

[069] In a still further embodiment the method may further comprise moving a jack screw in the charging tool to connect the charging tool to the valve body.

[070] While embodiments have been described herein, those skilled in the art, having benefit of this disclosure, will appreciate that other embodiments are envisioned that do not depart from the inventive scope. Accordingly, the scope of the present claims or any subsequent claims shall not be unduly limited by the description of the embodiments described herein.

Claims

WHAT IS CLAIMED IS:

1. A valve arrangement configured to allow a fluid to flow from a pressurized fluid source to a chamber, comprising:

a valve body having a bore and a side port, wherein the bore is connected to the side port;

a valve stem positioned in the bore, the valve stem having a flange of a greater diameter than a diameter of a remainder of the valve stem;

at least one piston within the valve body, the at least one piston is configured to move from a first position to a second position, and wherein a movement of fire at least one piston moves the valve stem;

at least one elastomeric seal positioned around the valve stem; and at least one flange, wherein the flange is located one of on and in the valve body, wherein the flange is configured to accept an installation pin arrangement, and wherein when the valve stem is in a dosed position, the flange of the valve stem contacts tee valve body and the elastomeric seal provides a seal between the valve stem and the valve body.

2. The valve arrangement according to claim 1, further comprising:

an installation tool with an installation pin arrangement, wherein tee installation pin arrangement is configured to interface with the at least one flange wherein rotation of the installation tool rotates the valve body.

3. The valve arrangement according to daim 2, wherein the installation pin

arrangement is an arrangement of drive pins.

4. The valve arrangement according to daim 1 , further comprising:

at feast one seff-!ocking washer.

5. The valve arrangement according to claim 2, wherein the installation tool has a jacking screw to interface with the valve.

6. The valve arrangement according to claim 2, wherein the installation tool has a hole system, the hole system configured to accept a fluid released from the valve and expel the fluid to an outside environment

7. The valve arrangement according to claim 2, wherein the installation tool further comprises a square drive.

8, A valve arrangement configured to allow a fluid to flow from a pressurized fluid source to a chamber, comprising:

a valve body having a bore, a side port and a top port, wherein the bore is connected to the side port and the top port is threaded;

a valve stem positioned in the bore, the wive stem having a flange of a greater diameter than a diameter of a remainder of the valve stem;

at feast one piston within the valve body, the at least one piston is configured to move from a first position to a second position, and wherein a movement of the at least one piston moves the valve stem;

at least one elastomeric seal positioned around the valve stem; and at least one flange, wherein the flange is located one of on and in the valve body, wherein the flange is configured to accept an installation pin arrangement, and wherein when the valve stem is in a closed position, the flange of the valve stem contacts the valve body and the elastomeric seal provides a seal between the valve stem and the valve body; and

a charging tool configured to interface with valve body wherein upon installation of the charging tool to the valve body, a gas is ported from the pressurized fluid source to a space in between two seals in the charging tool, thereby providing a flow of fluid through the valve body.

9. The valve arrangement according to claim 8, further comprising:

a jacking screw configured to interface with the valve body.

10. The valve arrangement according to claim 9, wherein the jacking screw is used to connect the charging toot to the valve body.

11. The vah/e arrangement according to claim 10, wherein the jacking screw is ported.

12. The valve arrangement according to claim 8, further comprising:

an adapter connected to the charging tool, wherein the adapter is configured to accept a charge of fluid within the charging tool.

13. A method of operating an accumulator charging system, comprising:

placing a valve body in contact with an accumulator, the valve body comprising a first bore, a flange and at least one side port; and

connecting the valve body to the accumulator charging system using an arrangement of pins on an installation tool that interface with the flange of toe valve body, wherein the connecting of the valve body to the accumulator uses an internal jacking screw within the vah/e body.

14. The method according to claim 13, further comprising:

connecting a charging tool to the valve body, wherein the connecting ports a gas from the pressurized fluid source to a space in between two seals in the charging tool.

15. The method according to claim 13, further comprising:

moving a jack screw in the charging tool to connect the charging tool to the valve body.