JP2017133357A - Swivel with or for hydrant manifold for industrial fire fighting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hydrant manifold and a swivel that can supply large volumes of water even in the case of large fires and allow a hydrant to be directed to a required direction.SOLUTION: An embodiment comprises a swivel connectable to a hydrant manifold, including a male sleeve MS and a female sleeve FS of stainless steel so as to allow at least 180° relative rotation and having at least two bearings between the male sleeve MS and the female sleeve FS.SELECTED DRAWING: Figure 7

Description

[Cross-reference of related applications]
This application is an invention by the same inventors, filed on December 9, 2010 and March 7, 2011, and each named “Swivel Hydrant Manifold for Industrial Fire Fighting”. Copending US patent application 61 / 459,232 and "Swivel with or for Industrial Hydrant Manifold for Industrial Fire Fighting" We claim priority to patent applications 61 / 464,628 and based on these applications. The contents of both of the above provisional applications are incorporated herein by reference.

  The present invention relates to a fire hydrant manifold for industrial fire extinguishing in a factory or facility, and more particularly to a fire hydrant manifold with a swivel. (In this specification, “manifold” includes a single opening.)

Background Art and Problems to be Solved by the Invention

  Fire-fighting site logistics presents issues as important as the availability of equipment and applicable personnel issues in the face of industrial fire fighting behavior.

  A large-scale fire requires a large amount of water, and may require multiple water supply hoses with a diameter of 6 inches (152.4 mm) or more. The simplest, most reliable and safest way to distribute large volumes of water throughout the facility is by building an underground water delivery system with a ground hydrant manifold. These fire hydrant manifolds are used in conjunction with a large diameter water supply hose that supplies the water required for the pump, fire-extinguishing nozzle, and foam mixing supply.

In current practice, the hydrant manifold is fixed with respect to the direction the hydrant manifold is facing. Therefore, a hose that must eventually go in the opposite direction must be laid in a large diameter circle to obtain the effect of rotating the direction of water by 180 ° without sacrificing head pressure. A 12 inch (304.8 mm) diameter hose may require a 50 ft (1.524 m) rotation rate. The additional hoses needed to change the direction of the water by 180 ° can be hundreds of feet. Large diameter hoses are expensive. A 12 inch (304.8 mm) hose costs about $ 2,500.
For this reason, fire hydrant manifolds may be placed on opposite sides of the road to face this problem. However, duplication of iron and header devices is required.

  By using a swivel with a hydrant manifold, or a swivel for a hydrant manifold, you can save the cost of installing manifolds on both sides of the road to get the right facing manifold and / or additional hoses The cost of transportation and laying can be saved. In recent years, the size of headers has increased, thereby increasing the size of hoses, and the cost of hoses has increased dramatically, so the industry is looking for ways to minimize the costs and maintenance associated with fire fighting systems. Has been.

  Since the late 1980s, swivels have been available that are associated with large firefighting monitors and can manage thousands of pounds of thrust, but their suppliers have been limited. Williams is confident that they are the first to offer such a large swivel of 6 inches (152.4 mm) or larger for monitoring. Williams has conducted extensive in-house testing on monitor swivels that can operate after months and years of exposure to the outside climate and can handle thousands of pounds of thrust from the monitor. It was. Williams knows extensive in-house testing on swivel weatherability and force handling.

  The industrial fire extinguishing industry has historically accepted wasting hoses and duplication of hydrants in connection with securing hydrant manifolds, but with increasing demands on supply pipe and hose diameters The cost for such waste has increased. We believe this situation is a problem. Williams' testing experience teaches that we can provide a proper swivel to be used with or for a hydrant manifold to solve this problem.

  It is also within the present invention to recognize that situations that have been accepted for a long time constitute useless problems such as waste of hoses and the complexity of logistics associated with securing a hydrant manifold. Furthermore, the present invention includes knowledge of testing swivels, particularly large diameter swivels. This test shows that a fixed hydrant manifold swivel can be provided that meets the long-term requirements of the required thrust and weatherability.

  Therefore, the present invention is a swivel used for a plurality of fire hydrant manifolds arranged in a row or a swivel for a fire hydrant manifold, and preferably includes a swivel capable of rotating 360 °. The swivel is configured to be located below the manifold, usually above the valve connected to the water delivery system or standpipe. Such swivels that have been tested to withstand the required range of thrust and climate will allow the first responder to position the hydrant in the most effective direction, and preferably depending on the location at risk. It is possible to lock the swivel at a predetermined position by using a simple swivel position lock unit that is mounted. With swivel hydrant manifolds, the cost of providing multiple manifolds pointing in different directions and / or the additional 100 feet (3.048 m) or more of the hose required to redirect water without undue pressure loss The cost of providing the length is reduced.

The design advantages of a swivel with a hydrant manifold or a swivel for a hydrant manifold are shown below.
-By eliminating the initial bend radius, the overall length of the required hose is reduced.
• Early hose flexing across the road is prevented from interfering with the road.
• Pressure is maintained by requiring shorter hoses.
-Suitable for very crowded areas (vertical design).
-Suitable for a wide range of flows up to 12,000 gpm.
-Built with industrial firefighters in mind.
・ Sturdy design using swivel capable of supporting several tons of side loads.
It is completely possible to use it with a pipe joint for grease injection of an integrated swivel.
• With a fire hydrant with a swivel, the number of fire hydrant locations required can be reduced by as much as 50% (depending on the location and size of the fire hydrant) with more efficiently supplied water

The following are included in the preferred design choices.
Different material designs and different inlet and stand tube sizes (eg 4, 6, 8, 10, 12 inches (101.6, 152.4, 203.2, 254, 304.8 mm)).
Different header designs (vertical stack arrangement, conventional tree arrangement, or single 90 ° outlet).
-Various exhaust pipe options (NST, BSP, Storz, etc.).
Different drain tube sizes (1.5 inches (38.1 mm) to 12 inches (304.8 mm)).
-Built-in swivel lock to prevent movement after placement.
-Can be used with a discharge valve, check valve, cap, or pressure gauge.
-Available with built-in monitor mount.
-Can be used with a built-in automatic fire hydrant drainage valve (lower swivel).
• Can be used with a hydrant inflow valve (between hydrant swivel and header connection).

Sizing Guidelines • The following figure is based on a 24 inch underground header with an 8 foot vertical tube that extends to the base of the hydrant. There is a reduction in numbers from the underground header entry point to the fire hydrant discharge (hose connection). The number will vary based on the drain valve and the type / size of the selected connection.
• The recommended fire hydrant size is determined each time.
• These recommendations are based on the risks present and the water flow required for proper protection.
6 inch (152.4 mm) stand / fire hydrant (approximate Cv = 950).
o Reduction of 1,000 gpm-1 psi o Reduction of 2,000 gpm-4.5 psi Reduction of o 3,000 gpm-10 psi-8 inch (203.2 mm) standing tube / fire hydrant (approximately Cv = 730)
o 3,000 gpm-3 psi reduction o 4,000 gpm-5.3 psi reduction o 6,000 gpm-12 psi reduction • 10 inch (254 mm) standing tube / fire hydrant (approximately Cv = 2670)
o Reduction of 6,000 gpm-5 psi o Reduction of 8,000 gpm-9 psi o Reduction of 10,000 gpm-14 psi

  The present invention includes not only swivels used with the inventive fire hydrant manifold, but also swivels used with existing fire hydrant manifolds. Existing swivel manifolds provide an alternative for facilities that allow the importance of having an unfixed hydrant manifold rather than the hydrant manifold already fixed in place. By changing the swivel, a standard non-swivel hydrant manifold can be changed to a swivel hydrant. For example, an end user unscrews a standard non-swivel hydrant manifold from a typical hydrant manifold inflow valve or standpipe, places a change swivel on top of the inflow valve or standpipe, and the hydrant manifold On the top of the swivel. This change allows the existing hydrant manifold to be rotated and the existing hydrant manifold to be locked in place via a positive locking mechanism.

  The fitting at the bottom of the swivel is preferably fixed and does not move relative to the ground. The upper part of the swivel is preferably provided with a locking element and an upper flange and is preferably locked in the required direction and rotatable 360 degrees. Preferably, the upper part of the swivel and the attached hydrant are fixed in a desired direction. For example, it is a lock hole that can be coupled, and is fixed with a pin at a predetermined position through lock holes that are aligned every 22.5 degrees (16 positions).

The present invention discloses a swivel for use with a fire hydrant manifold for industrial fire extinguishing, or a swivel for a fire hydrant manifold for industrial fire extinguishing. A swivel with a hydrant manifold includes a hydrant manifold and a swivel connected to the hydrant manifold and connected to an industrial water supply system including an inlet and a valve or standpipe.
The swivel provides a flow tube of at least 6 inches (152.4 mm) and preferably includes a stainless steel male sleeve and a female sleeve joined together in a structure capable of relative rotation, wherein at least two of the steel ball bearings A ring is provided between the male and female sleeves and includes an inner water seal, preferably an outer debris seal. The manifold may be horizontal or vertical. The stainless steel swivel male and female sleeves are preferably configured on one hand to be welded to the hydrant manifold and on the other hand to be welded to the tube or fitting, This pipe or fitting is often connected to a ground valve in an industrial water supply pipe system.

  Preferably, the swivel includes a grease nipple for lubricating the areas between the sleeves and the periphery of the bearing, the sleeve and the bearing are made of 316 stainless steel, and a lock such as a pair of locking flanges. It is preferable to include a mechanism. More preferably, the swivel of the present invention includes a flange or a flange portion provided with coupling holes in the male sleeve and the female sleeve, and the holes are arranged through the holes so that the swivel It is configured to lock in position.

  The present invention includes a swivel device for connection to an existing fire hydrant manifold. The swivel device includes a first attachment having a structure that is fixedly attached to an inflow valve or a standing pipe, and a swivel body that has a sealing property and is rotatably coupled to the first attachment. The swivel body provides a second attachment that attaches directly or indirectly and fixedly to the hydrant manifold. Preferably, a lock device for setting a rotatable mounting position between the swivel body and the first mounting tool is included. Preferably, the first fixture and swivel body provide at least a 6 inch (152.4 mm) fluid conduit between the first and second fixtures.

  It will be apparent that a swivel can be connected directly or indirectly between the hydrant manifold and the industrial water system. In the preferred embodiment, a swivel that is simply and directly connected is shown.

The invention can be better understood when the following detailed description of the preferred embodiment is considered in conjunction with the following drawings.
A preferred embodiment of a 6 inch (152.4 mm) swivel hydrant manifold with two 5 inch (127 mm) or 6 inch (152.4 mm) Storz discharge tubes and one 2 inch (50.8 mm) FIG. 2 is an isometric view of a hydrant manifold providing an exhaust pipe and a 0.5 inch (12.7 mm) exhaust pipe. FIG. 1B is a top view of the 6 inch (152.4 mm) swivel hydrant manifold of FIG. 1A. FIG. 1A 6 inch (152.4 mm) swivel hydrant manifold with 6 inch (152.4 mm) flanged water pipe provided by the user (if using a butterfly valve, a weld neck flange or FIG. 6 is a front view of a fire hydrant manifold that includes an inlet valve that includes a socket weld flange at the bottom and that may be provided as needed. 1B is a side view of the fire hydrant manifold with a 6 inch (152.4 mm) swivel of FIG. 1A. FIG. 1D is a detailed drawing from FIG. 1D including a 6 inch (152.4 mm) swivel, a swivel lock pin, and a swivel lock ring, with the attachment to the top of the swivel being 360 degrees rotatable and the lock ring being 22 .It has holes every 5 degrees. 1 is an isometric view of a preferred embodiment of a fire hydrant manifold with an 8 inch (203.2 mm) swivel of the present invention, including a 5 inch or 6 inch (152.4 mm) Storz discharge tube. FIG. 2B is a top view of the 8 inch (203.2 mm) swivel hydrant manifold of FIG. 2A. FIG. FIG. 2A 8 inch (203.2 mm) swivel hydrant manifold with 8 inch (203.2 mm) water pipe provided by the user (if using a butterfly valve, weld neck flange or socket weld FIG. 2 is a front view of a fire hydrant manifold showing an inflow valve at the bottom and may be provided as needed. FIG. 2B is a side view of the hydrant manifold with 8 inch (203.2 mm) swivel of FIG. 2A. FIG. 2D is a detail drawing from FIG. 2D showing an 8 inch (203.2 mm) swivel, swivel lock pin, swivel lock ring, and that the top mount will be 360 degrees rotatable and locked It is drawing which shows that a ring has a hole every 22.5 degree | times. 1 is an isometric view of a 12 inch (304.8 mm) swivel hydrant manifold of a preferred embodiment of the present invention, including a single 12 inch (304.8 mm) Storz exhaust tube. FIG. FIG. 3B is a top view of the 12 inch (304.8 mm) swivel hydrant manifold of FIG. 3A. FIG. 3A 12 inch (304.8 mm) swivel hydrant manifold with 8 inch (203.2 mm) water pipe supplied by the user (if using a butterfly valve, weld neck flange or socket weld FIG. 2 is a front view of a fire hydrant manifold showing an inflow valve at the bottom and may be provided as needed. 3B is a side view of the 12 inch (304.8 mm) swivel hydrant manifold of FIG. 3A. FIG. FIG. 3D is a detailed drawing of FIG. 3D showing two swivel lock rings and one swivel lock pin with a 12 inch (304.8 mm) swivel, and the upper mounting portion being rotatable 360 degrees; It is also a drawing showing that the lock ring preferably has holes every 22.5 degrees. FIG. 2 is an isometric view of a typical oil storage area showing the location of the swivel hydrant manifold of the present invention, which reduces the required hose length by eliminating the initial bend radius. (Up to 100 feet (3.048 m) per hose), guiding the hose along the side of the road, not the bending radius that occupies the road, preventing the road from being obstructed, laying If the hose is shortened, friction loss will be reduced, draining in a more effective and accurate direction, making it suitable for very crowded areas, up to 10000 gpm and technical approval It shows a standard model that can also be used for higher flow rates, and the power consumption required by the design of the hydrant with swivel because it is more efficient The location of the stopper is likely to be reduced by up to 50% across the equipment would result in advantages including. Fig. 4 shows how the swivel hydrant manifold of the present invention rotates to deliver water directly to one of a plurality of hazardous areas. FIG. 4B is an enlarged detail view of FIG. 4A. The typical fire hydrant design is suitable for adjacent roads, and the fire hose often has to be bent immediately with a large bend radius to deliver water in the required direction, whereas the swivel of the present invention The fire hydrant shows that the first responder can point the fire hydrant in the required direction, minimizing the occupation of the road and the total installed hose length required. The typical fire hydrant design is suitable for adjacent roads, and the fire hose often has to be bent immediately with a large bend radius to deliver water in the required direction, whereas the swivel of the present invention The fire hydrant shows that the first responder can point the fire hydrant in the required direction, minimizing the occupation of the road and the total installed hose length required. 1 is a side view of a preferred embodiment of a 10 inch (254 mm) 360 stainless steel swivel joint. FIG. FIG. 5B is a cross-sectional view of the embodiment of FIG. 5A, including a note that the casting is preferably investment cast from 360 stainless steel, annealed, and stress relieved. FIG. 2 is an isometric view of a preferred embodiment of an 8 inch (203.2 mm) swivel hydrant conversion kit. FIG. 6B is a detailed drawing from FIG. 6A, including illustrations of the swivel lock locking element, swivel lock rotation element, and swivel lock pin (pin chain not shown). 6B is a side view of the 8 inch (203.2 mm) fire hydrant conversion kit of FIG. 6A. FIG. It is a front view of a 6D 8-inch (203.2 mm) fire hydrant conversion kit with a swivel. FIG. 6B is a top view of the 8 inch (203.2 mm) fire hydrant conversion kit of FIG. 6A. It is sectional drawing of the conversion kit of a fire hydrant with a swivel of 8 inches (203.2 mm), Comprising: A ball bearing and a seal part are the figures which are not shown in the swivel. Part of a cross-sectional view of an 8 inch (203.2 mm) swivel hydrant conversion kit, where the ball bearing and seal are not shown in the swivel, the two circular grooves represent the ball bearing grooves, It is a figure which shows the component of a swivel in detail.

  The drawings are exemplary in nature. It will be understood that the structure may be simplified and details may be omitted in order to convey some aspects of the invention. Scale may be sacrificed for clarity.

  As shown in FIGS. 1-8, a preferred embodiment of the swivel in the present invention includes a 316 stainless steel sleeve FS, MS and a ball bearing SB. The stainless steel sleeve is preferably heat treated and annealed. In a preferred embodiment, an opening P is provided in the female sleeve for inserting the ball bearing SB, and the race RSSB for at least two rings of the ball bearing SB is half in the female sleeve FS by milling. The other half is located in the male sleeve MS. It is preferable that at least one grease nipple GF is provided in order to maintain a properly lubricated state between the male sleeve MS and the female sleeve FS and the area around the ball bearing SB.

An outer debris seal location DSL is preferably provided to be located in a suitable notch between the male and female sleeves for a debris seal such as an O-ring.
In a preferred embodiment, a simple O-ring prevents debris from entering the area between the male and female sleeves from the outside. The inner seal portion IS designed more complicated is preferably made of PFTE or Teflon (registered trademark), and is provided in the inner seal place ISL as a water seal portion of a space including ball bearings between the sleeves. It is preferable. An internal water seal IS is placed at the shoulder at the location ISL between the male and female sleeves so that the water pressure makes the seal engagement between the two sleeves stronger by the water seal. It is preferable.

  In a preferred embodiment, a drain is provided in the fitting under the swivel so that water can be drained out of the manifold and swivel when the upstream valve stops supplying water to the swivel and hydrant. ing.

  Lubricating oil is preferably supplied through at least one grease nipple GF, and is preferably regularly maintained every 6 months to 1 year. The lubricating oil is selected to maintain viscosity and composition over a range of anticipated environmental and hazardous temperature changes.

  1A-1E illustrate a preferred embodiment of a vertical hydrant manifold with a 6 inch (152.4 mm) swivel. The manifold of FIG. 1A consists of a vertical manifold VM welded to a swivel SW. The male sleeve MS of this swivel SW is shown as having a welded lock ring LR. The swivel female sleeve FS is welded to a fitting FT having a corresponding lock ring LR. A pin LP is shown that locks between the two rings to lock the swivel in place. Therefore, the female sleeve attachment has a structure that is optionally coupled to a structure such as the lower valve IV. Structures such as the lower valve IV are commonly present in many applications and are typically present in butterfly or wafer valves. Thus, the valve is coupled to a standoff outlet flange or the like that is part of an industrial water supply system.

  1B, 1C, and 1D are top, front, and side views, respectively, of the preferred embodiment of FIG. 1A. FIG. 1E is a more detailed drawing of the preferred embodiment of FIG. 1A, showing the lock ring LR, the lock pin LP, the male sleeve MS and the female sleeve FS while focusing on the swivel portion SW. .

  2A-2E show the horizontal manifold HM on an 8 inch (203.2 mm) swivel hydrant. Again, valve IV is shown at the top of the riser flange. The fitting FT is a connecting portion between the valve and the swivel SW, and plays a role of supporting one of the two swivel locking flange rings LR. The swivel between the fixture and the manifold also supports the locking flange ring LR. Note that many other means of locking the swivel are possible. An example is an opening in a female sleeve and a screw that fastens the male sleeve through the opening.

  2B, 2C and 2D are top, front and side views, respectively, of the 8 inch (203.2 mm) swivel manifold of FIG. 1A. FIG. 2E shows the swivel portion in more detail for the 8 inch (203.2 mm) swivel of the hydrant manifold.

  3A-3E show a 12 inch (304.8 mm) swivel hydrant manifold. Again, valve IV opens to direct water flow into the swivel and hydrant manifold. The hydrant manifold has a single 12 inch (304.8 mm) opening.

  3B, 3C, and 3D are top, front, and side views, respectively, of the 12 inch (304.8 mm) swivel hydrant manifold of FIG. 3A.

  4A-4E are external views of a preferred oil storage area layout incorporating the present fire hydrant invention. The oil storage area layout is shown as supplied by one swivel hydrant manifold SHM. 4A-4E show swiveled manifolds in various useful directions with respect to the oil storage area.

  5A and 5B are side and cutaway views of a preferred embodiment of the swivel SW portion of the present invention. An inner male sleeve MS and an outer female sleeve FS are shown for this 10 inch (254 mm) embodiment, with three races RSSB shown for a ring of stainless steel ball bearings. In this preferred embodiment, the race RSSB for the stainless steel ball bearing SB is milled inside the male sleeve and inside the female sleeve. The upper part of the female sleeve is designed to be welded to the hydrant manifold, and the lower part of the male sleeve is designed to be welded to the upstream fitting.

  A custom water seal location ISL, preferably used with an Elgi Roy spring, is shown. A grease depressurized GPV hole is shown. Although not shown, one or more standard grease nipples will be included.

  As mentioned above, the sleeve casting is preferably manufactured from 316 stainless steel and annealed to remove stress. An opening P is shown in the female sleeve, through which the ball bearing is mounted. In order to tightly seal water leaks under the pressure of water through the swivel, the water seal is preferably specifically designed for the chamber ISL. A seal portion made of polytetrafluoroethylene, that is, Teflon (registered trademark) is preferable.

  A preferred swivel SW incorporated in a “conversion kit” and used with or for a hydrant manifold, as described above and shown in FIGS. 6, 7 and 8, preferably includes a 316 stainless steel sleeve, In addition, it is preferable to have a ball bearing SB between the male sleeve MS and the female sleeve FS so that both sleeves are rotatably coupled. The stainless steel sleeve is preferably heat treated and annealed. In a preferred embodiment, the race RSSB for at least two rings of the ball bearing is milled, with half in the female sleeve FS, with an opening P in the female sleeve for insertion of the ball bearing. Is located in the male sleeve MS. Preferably, at least one grease nipple GF is provided to maintain a properly lubricated area between the male and female sleeves and around the ball bearings.

  It is also preferable to provide an outer debris seal portion DS such as an O-ring disposed in a suitable notch DSL between the male and female sleeves. A simple O-ring can prevent debris from entering the area between the male and female sleeves from the outside. The inner seal portion designed to be more complicated is preferably made of PFTE or Teflon (registered trademark), and is provided in the inner seal place ISL as a water seal portion of a space including a ball bearing between the sleeves. It is preferable. It is preferred that the internal water seal is located on the shoulder between the male sleeve and the female sleeve so that the water pressure makes the seal engagement between the two sleeves stronger by the water seal.

  In a preferred embodiment, a drain is provided so that water can be drained out of the manifold and swivel when the upstream valve stops supplying water to the swivel and hydrant.

  Lubricating oil is preferably supplied through at least one grease nipple GF, and is preferably regularly maintained every 6 months to 1 year. The lubricating oil is selected to maintain viscosity and composition over a range of anticipated environmental and hazardous temperature changes.

  6A-6E, 7 and 8 are views of a preferred embodiment of the swivel SW as a conversion kit, particularly for use with a fire hydrant manifold. The inner male sleeve MS and the outer female sleeve FS are shown for an 8 inch (203.2 mm) embodiment, with two race RSSBs shown having locations for stainless steel ball bearings. In this preferred embodiment, the races for the stainless steel ball bearings RSSB are milled and located in the outside of the male sleeve and the inside of the female sleeve. On the one hand, the upper part of the female sleeve is designed to be welded directly or indirectly to the hydrant manifold, while on the other hand, the lower part of the male sleeve is designed to be welded directly or indirectly to the upstream fitting. An additional custom water seal location ISL, preferably used with an Elgi Roy spring, is shown. A grease nipple GF is shown. As shown, the sleeve is preferably manufactured from 316 stainless steel and annealed to relieve stress. An opening P is shown in the female sleeve, through which the ball bearing is mounted. In order to tightly seal water leaks under the pressure of water through the swivel, the water seal is preferably specifically designed for the chamber ISL. A seal portion made of polytetrafluoroethylene, that is, Teflon (registered trademark) is preferable.

  As shown in FIG. 7, the female sleeve FS functions as a swivel body having a sealing property and a structure that is rotatably attached to the male sleeve MS. The male sleeve MS includes a fitting FT for attachment (by welding) to an inflow valve or a standpipe or the like. The annular lock ring FLR and the swivel lock ring portion LR are preferably provided with holes precisely aligned with each other so that the pin PN can lock the position between the two lock rings and the sleeve.

  FIG. 8 shows how the pin PN can lock the position between the two lock rings. Further, FIG. 8 illustrates the arrangement of the race ring RSSB for receiving the ball bearing through the opening P. The race rings RSSB are milled on the inside of the female sleeve and the outside of the male sleeve for accurate alignment with each other. The location ISL of the seal between the male and female sleeves is shown, and the seal serves to seal the rotatable attachment between the male and female sleeves.

  The foregoing descriptions of preferred embodiments of the present invention are intended to be illustrative, and are intended to be exhaustive and limit the invention to the precise forms and embodiments disclosed. It is not intended. The above description has been selected as the best description of the principles of the invention and its practical application, to enable those skilled in the art to best utilize the invention in various embodiments. Various modifications that are most appropriate for a particular application are expected. The scope of the invention is not limited by the description, but is intended to be defined by the claims set forth below. The above disclosure and description of the present invention are illustrative and various modifications can be made with respect to size, shape, material, and details of the apparatus described without departing from the spirit of the present invention. The present invention has been described using terminology determined by historical assumptions, where a single element description includes one or more elements, a two element description includes two or more elements, and so on. It is the same. In addition, the drawings and the description in this specification are not necessarily drawn to scale.

Claims (16)

A fire hydrant manifold,
A swivel configured to connect directly or indirectly to the hydrant manifold and to connect directly or indirectly to an industrial water supply system;
The swivel includes at least two pairs of bearings including a stainless steel male sleeve and a female sleeve that provide a flow tube of at least 6 inches (152.4 mm) and are coupled to each other in a structure capable of relative rotation of at least 180 °. Between the male sleeve and the female sleeve,
At least 6 inch (152.4 mm) swivel for industrial fire fighting, where the location for the inner hydraulic seal is between the male sleeve and the female sleeve structured to protect the bearing contact area from water ingress With hydrant manifold.   The hydrant manifold with swivel according to claim 1, wherein the hydrant manifold is a horizontal type.   The hydrant manifold with swivel according to claim 1, wherein the hydrant manifold is a vertical type.   The fire hydrant manifold with swivel of claim 1, wherein the male sleeve and the female sleeve comprise stainless steel, and the swivel includes a location for an external debris seal between the male sleeve and the female sleeve.   The fire hydrant manifold with swivel according to claim 1, comprising sleeves structured to allow relative rotation of at least 360 °, and a grease nipple for lubricating a region between the sleeves and a region around the bearing.   The fire hydrant manifold with swivel of claim 1, wherein the two sets of bearings include two rings of ball bearings, and the sleeve and the ball bearings include 316 stainless steel.   The fire hydrant manifold with swivel of claim 1, comprising a locking mechanism between the two sleeves of the swivel.   The hydrant manifold with swivel of claim 1, comprising a pair of connectable flange portions. A first fitting configured to attach directly or indirectly and fixedly to an inflow valve or standpipe of a hydrant manifold;
A swivel body structured to be directly or indirectly sealed and rotatably attached to the first fixture, directly or indirectly and fixedly to the fire hydrant manifold A swivel body that provides a second fixture of the mounting structure;
A locking device having a structure for fixing the position of the rotatable mounting portion between the swivel main body and the first mounting tool,
For industrial fire extinguishing, wherein the first fixture and the swivel body provide at least a 6 inch (152.4 mm) fluid conduit between the first fixture and the second fixture. A swivel device for a fire hydrant manifold of at least 6 inches (152.4 mm).   The apparatus of claim 9, comprising the first fitting having a flange for fixed attachment to an inlet valve or standpipe of the hydrant manifold.   The apparatus of claim 9, wherein the second attachment includes a flange for fixed attachment to the hydrant manifold.   The lock device includes a lock portion on the swivel main body and a lock flange on the first attachment, and the lock portion and the flange are provided with holes for inserting pins. Item 10. The apparatus according to Item 9.   The apparatus of claim 9 including a rotatable male sleeve and a female sleeve coupled to each other.   The apparatus of claim 13, wherein the male sleeve and the female sleeve comprise stainless steel.   14. The apparatus of claim 13, comprising at least two rings of stainless steel ball bearings located between the male sleeve and the female sleeve.   The apparatus according to claim 15, further comprising a grease nipple for flowing lubricating oil between the sleeves and around the ball bearing.

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