Abstract: A balanced valve includes a valve body, a valve stem, and first and second flow control members. The valve body forms a channel defining a fluid flow path extending from a valve inlet to a valve outlet via a valve gallery and defines an opening in fluid communication with the gallery. The valve stem has first and second portions and is at least partially disposed within the opening and the gallery. The first flow control member is coupled to the first portion of the valve stem and controls fluid flow along the fluid flow path. The second flow control member is coupled to the second portion of the valve stem and is disposed in the opening of the valve body. The second flow control member and the valve body define a cavity. An integral balancing passage is formed within the valve body and fluidly connects the cavity and the outlet.

Abstract: Example tapered nut valve plug fastener apparatus disclosed herein include a valve stem, a first nut, a valve plug, and a second nut. The first nut includes a first tapered surface and the second nut includes a second tapered surface. The valve plug includes a bore. The first nut threadably engages the valve stem and the valve stem passes through the bore. The bore engages the first tapered surface. The second nut threadably engages the valve stem and the bore engages the second tapered surface.

Abstract: A replaceable seat pocket assembly (10) for a gate valve body, the valve body comprises a recess (13) forming a seat pocket interface around the flow bore (B) by the gate opening, the seat pocket assembly (10) is arranged to be replaceable and comprises a ring shaped replaceable seat face ring (1), an energizing retaining collar (3) provided with threads. The invention also comprises a tool (1000) for replacing the replaceable seat pocket assembly, an also a kit and a method for installation of the replaceable seat pocket assembly.

Abstract: A spool valve device includes a valve body, an actuator port, a spool, a supply passage, and a regeneration flow passage formed in the spool. An inflow port of the regeneration flow passage always communicates with the actuator port, when the spool is placed at a regeneration switching position where a predetermined moving amount from a neutral position is ensured, the outflow port of the regeneration flow passage communicates with the actuator port through the supply passage, and when the spool is placed at a position other than the regeneration switching position, the communication between the outflow port and the actuator port is blocked.

Abstract: A rotary valve that controls a flow rate at which working oil is supplied to and discharged from a hydraulic cylinder that causes a wing to rotate about a rotary shaft includes a rotor that rotates as the wing rotates about the rotary shaft, and a first control flow passage and a second control flow passage formed in the rotor to control the flow rate at which the working fluid is supplied to and discharged from the hydraulic cylinder, wherein the first control flow passage and the second control flow passage respectively vary a resistance exerted on a flow of the working fluid passing therethrough as the rotor rotates.

Abstract: A plug valve having an improved sealing assembly. The valve has a body, and a bore formed in the body. The bore is configured to receive a plug and an insert. Recesses are formed in the valve in the internally disposed surface of the bore for placement of seals, which interact with an externally disposed sealing surface of the insert. The plug and insert have complementary surfaces that prevent fluid from passing through the annulus between the plug and insert.

Abstract: A drinking straw diaphragm is provided. The drinking straw diaphragm may provide a body circumscribing a flow opening fluidly communicative to straw portions on opposing end of the body. The flow opening is defined by opposing first and second edges cut through the body, wherein the first and second edges are biased in an open condition, but selectively movable between the open condition and the closed condition wherein the first and second edges engage, substantially reducing the flow opening in a controllable manner.

Abstract: A link couples a support body and a valve body in a first arrangement where a first link-forming member is rotationally movably supported by the support body and in which a second link-forming member is rotationally movably supported by the valve body. The link includes: a link length that is a length of the first link-forming member, as measured between a rotation axis with respect to the support body and a rotation axis with respect to the second link-forming member; and a link length that is a length of the second link-forming member, as measured between a rotation axis with respect to the valve body and a rotation axis with respect to the first link-forming member. The link lengths differ from each other. The link is also configured to enable coupling between the support body and the valve body in a second arrangement inverted with respect to the first arrangement.

Abstract: A needle valve capable of adopting at least one closed position and one open position, a piston sensitive to the fluid flow and able to adopt at least one low-flow position and one high-flow position. The needle valve and the piston are arranged in such a way that as long as the piston is in the high flow position, the needle valve is prevented from occupying the closed position.

Abstract: A localized fire protection system for composite overwrapped pressure vessels which uses net or mesh which stretches in at least one direction. They can be elastomeric or polymeric or any material and/or weave that provides said function. Wrapping sections held together via a flammable fuse connected to a relief valve under pressure from the net wrappings to block a relief valve pathway to replace stored gas in case of a localized fire.

Abstract: A device for restricting liquid backflow through an overhead line on a tank and a method of using the device are provided. The device has a tubular housing with spaced internal baffle plates. The device is secured in place in the interior of an overhead pipe on the top of a tank on a tank truck or other vehicle used for transporting bulk liquid cargo. The device prevents liquid backflow from entering overhead piping due to sloshing action of the liquid during transport. The device allows air to flow through the device so that air may be supplied to the tank, as well as vented from the tank, through the device.

Abstract: A flow regulating device (60) and a gas water heater (1) having the same are provided. The flow regulating device (60) includes a housing (100) defining a water inlet (110) and a water outlet (120) therein; a flow regulating assembly (200) disposed in the housing (100), a temperature-flow regulating orifice (230) located between the water inlet (110) and the water outlet (120) being defined in the flow regulating assembly (200), and the flow regulating assembly (200) further including a regulating component for regulating opening of the temperature-flow regulating orifice (230); a temperature sensitive assembly (300) disposed in the housing (100) and connected to the regulating component, and the temperature sensitive assembly (300) driving the regulating component according to temperature of water in the housing (100). The flow regulating device has advantages of short regulating time, and high regulating precision.

Abstract: A fluid flow control valve includes a valve body and a motorized unit. The valve body is supported in a fluid system between a fluid inlet and a fluid outlet, and is moved between an opened condition for enabling a flow of fluid to flow from the fluid inlet to the fluid outlet and a closed condition for blocking the fluid to flow to the fluid outlet. The motorized unit includes an electric motor and an actuator which is operatively linked to the electric motor and is coupled with the valve body, wherein when the electric motor is activated, the actuator is driven to rotate to actuate the valve body between the opened condition and the closed condition.

Abstract: In a linear solenoid valve, a coil wound on a bobbin is disposed radially outside a first core and a second core of that configure a part of a core segment, and a cover portion is formed by filling the outer periphery of the coil with a resin material so that the coil and the core segment are integrally molded together. The first core includes a small diameter portion having an outside diameter r2 smaller than an outside diameter r1 of an outer tubular portion that is part of the second core and that is opposed to the coil, and a large diameter portion that has an outside diameter r3 larger than that of the small diameter portion. A space between the small diameter portion and the bobbin makes it less likely that the first core is pressed radially inward via the bobbin during formation of the cover portion.

Abstract: The solenoid valve according to the embodiment of the present disclosure includes a filter member accommodated in a bore of a modulator block, a valve seat including an orifice, and a plunger configured to open and close the orifice, wherein the boss in which a connecting path is formed is inserted into the valve seat located at a center of the filter member, a plunger valve configured to be vertically moved due to a pressure of supplied oil and including a vertical hole formed to pass through a center of the plunger valve is disposed below the connecting path, and a plunger valve seat having a diameter greater than that of the connecting path is provided at a lower portion of the connecting path to selectively come into contact with an outer surface of the plunger valve when the plunger valve is moved upward.

Abstract: An actuator for use with an on/off solenoid configured to maintain a position corresponding to the energized state of the solenoid when the solenoid is de-energized. The actuator is comprised of a guide that rotates a selector between one of two positions each time the solenoid is energized. One position of the actuator places the selector in an extended position and the other position of the actuator places the selector in a retracted position. To move the selector between the first and second positions, the solenoid is momentarily energized, and in each position of the selector, the solenoid is de-energized. The actuator can be coupled to a poppet valve to maintain the valve in one of two positions when the solenoid is de-energized.

Abstract: A computer-implemented method, system, and computer program product are provided. A plurality of maintenance messages (MMSGs) are identified. Each MMSG is associated with at least one shut-off valve. A sensor parameter is identified based on an analysis of sensor parameters associated with the shut-off valves of each MMSG. A threshold value for the sensor parameter is identified as being associated with abnormal operation of the respective shut-off valves. A sensor associated with a first shut-off valve captures values for the sensor parameter during a first and second predefined time period, the first and second predefined time periods associated with an opening and a closing of the first shut-off valve. Upon determining that a difference between the maximum values of the sensor values captured during the first and second predefined time periods exceeds the first threshold value, a determination is made that the first shut-off valve is operating abnormally.

Abstract: A fluidizing butterfly valve. The fluidizing butterfly valve includes a valve body and a fluidizing valve disk or member configured to fluidize material located above the butterfly valve and/or material moving through the butterfly valve.

Abstract: A microfluidic valve provided herein is configured to mix or capable of mixing a sample and/or a reagent in addition to controlling liquid flow. In one embodiment, the microfluidic valve comprises a rotor (3) and one or more micro-structures (2) that move with the rotation of the rotor (3). In one embodiment, the one or more micro-structures (2) stir and/or mix content in a mixing chamber (5) formed by the rotor (3), a base (1), and a sleeve (4) of the microfluidic valve. A microfluidic chip or chip system comprising one or more of the microfluidic valves, and methods of use, are also provided.

Abstract: A method and apparatus are disclosed for retaining at least one elongate object. The apparatus includes a first retaining member (702) comprising at least one female portion (712), a further retaining member (700) comprising at least one male portion (732) receivable in the at least one female portion, wherein the at least one male portion (732) comprises a first connecting region adapted to cooperate with a further connecting region and at least one securing element (785) slidable in a keyway (775) of the first retaining member (702) and engagable with said male portion (732) to securely connect the first and further retaining members and retain an elongate object therebetween.

Abstract: A clamp assembly includes a body part having a recess of different sizes for holding an elongated structure with different sizes and shapes. A horizontal spaced T-slot is located on a first side surface of the body part at its top and a T-shaped protruding arm is located on a second side surface of the body part at its top. The clamp assembly includes a male locking section with an extended snap arm located on the first side surface of the body part at its bottom and a female locking section with a stopper located on the second side surface of the body part at its bottom. The T-shaped protruding arm is locked into the T-slot and simultaneously the male locking section is locked into the female locking section, such that the clamp assembly is detachably assembled with another clamp assembly.

Abstract: A line penetration is useful for routing lines through a building part. The line penetration includes: a jacket tube, a base part, which is disposed at a first axial end of the jacket tube and has a receiving space, surrounding a routing opening, for a firestop material, an annular, membrane-like sealing element, which is disposed at the first axial end of the jacket tube, and at least one sealing plug, which is disposed at a second end of the jacket tube.

Abstract: Ducts manufactured by depositing one or more runs of material in a helix, a plurality of conjoined planar spirals, and a conjoined plurality of conical spirals.

Abstract: Described herein are corrugated heat protection tubes and methods of making the same. The heat protection tubes have improved heat resistance, improved abrasion resistance, and minimize or eliminate worker exposure to glass fiber insulating materials. The corrugated heat protection tubes can be used in automotive, transportation, and industrial applications, just to name a few.

Abstract: A method of continuously forming an axially extensible and retractable hose comprising: continuously forming an axially extending helix with axially spaced reinforcing coils from extruded thermoplastic material having a uniform cross-section along its length; and continuously bridging between an adjacent pair of the reinforcing coils with a continuous web of extruded thermoplastic material of substantially uniform width and relatively thin cross-section to form a continuous, helically extending sidewall, with the web having one of two opposite edge regions bonded continuously to a relatively flat outer bonding surface of a radially outwardly located portion of one of the adjacent pair of reinforcing coils, with the web having the other of the edge regions bonded continuously to a relatively flat inner bonding surface of a radially inwardly located portion of the other of the pair of reinforcing coils, and with the edge regions continuously radially separated from each other by the helix.

Abstract: The leak-tight threaded pipe joints include a metal-metal seal assembly. The present threaded joint for steel pipes include a tubular member (a nipple) and a coupling member, having situated thereon portions with an internal conical thread and with an external conical thread. The nipple terminates in a tip with an axially symmetrical shape, part of the outer surface of which constitutes a sealing surface, which interacts, upon assembly of the joint, with a mating sealing surface of the coupling. Each sealing surface includes a conical portion and a toroidal portion. The toroidal portion on the nipple is situated nearer to the threaded part, and the toroidal portion on the coupling is situated further from the threaded part. The sealing surface of the nipple and also part of the non-contacting regions of the tip that are adjacent thereto are situated higher than the line of the roots of the external thread.

Abstract: Embodiments of an apparatus of the present invention generally include a tubular, substantially exteriorly rectangular, jumper tube connector having a substantially rectangular interior cavity having a plurality of transverse grooves disposed in the surface thereof and extending there around, wherein at least a portion of the jumper tube connector along its two opposing wide sides has a non-uniform wall thickness, at least a portion of which being thicker than a substantially uniform wall thickness of the connector's two opposing narrow sides. A method of connecting shunt tubes utilizing the apparatus is also provided.

Abstract: Gasket seals for high pressure applications include retaining elements with inner diameter seal elements that interlock with the retaining element to provide resistance to movement in both axial and radial directions between the retaining element and seal element. High pressure sealing may be accomplished using a metallic core retaining element to which an electrically isolating material is bonded on either or both sides. Sealing is achieved through an inner diameter dielectric sealing element, such as a polytetrafluoroethylene (PTFE) inner diameter sealing ring. Flanges of a joint in a fluid flow ling may be bolted together with the gasket seal interposed therebetween. In the event of pressure changes, the inner diameter seal resists being drawn into the flow line, and resists axial movement relative to the retaining element, through dual locking members that secure the seal to the retaining element.

Abstract: A method electrically separates two fluid lines across a structural boundary. Fluid is transported between a first channel through a first fluid line and a second channel through a second fluid line across the structural boundary formed by a structure. The first channel and the second channel are connected by a channel formed by a fitting. The fitting is comprised of a first component, a second component, and an isolator. The first fluid line and the second fluid line are electrically separated using the isolator in the fitting.

Abstract: A sealed sleeve installed at an insertion coupling portion in a state in which a first pipe and a second pipe are insertion coupled to each other in order to seal couple the first pipe having a first outer diameter and a first inner diameter and the second pipe having a second outer diameter and a second inner diameter larger than the first outer diameter includes: a pillar shaped-main body having a main body central shaft; a through-hole formed using the main body central shaft as a central shaft on the main body and having an inlet as a second pipe side opening in an installation state and an outlet as a first pipe side opening in an installation state, wherein in the through-hole, a pressing portion that applies a sealing pressure to the insertion coupling portion is formed in a portion of an inner wall, and an inner diameter of the pressing portion is smaller than the second outer diameter.

Abstract: The present disclosure provides an apparatus and method assembling a flexible tube and a fitting body. A combination collet, a second collet, and a compression nut are introduced to an outer surface of a flexible tube. A first end of the flexible tube is introduced to a shoulder of the fitting body such that at least a portion of the flexible tube is inside the shoulder of the fitting body. The compression nut is fastened onto a threaded portion of the fitting body such that a plurality of radial pressure caused by the compression nut causes the combination collet and the second collet to clamp down on the outer surface of the flexible tube.

Abstract: An axial swaged fitting for permanently joining to a tube to achieve an elastic strain preload condition comprises an annular body including at least one body compression ball cavity. The body laterally surrounds at least a portion of the tube. An annular retainer includes at least one retainer compression ball cavity. The retainer laterally surrounds at least a portion of the body. A compression ball is located concurrently in both of the body compression ball cavity and the retainer compression ball cavity. The compression ball is deformed into both the body and the retainer. An annular collar laterally surrounds at least a portion of the retainer. The collar selectively exerts a predetermined compression force laterally inward toward the tube to urge the at least one compression ball into a deformation contact with at least one of the body compression ball cavity and the retainer compression ball cavity into the elastic strain preload condition.

Abstract: A connection clamping device (21; 61; 81; 131; 151) arranged for connecting a flexible tube (1) to a barbed end (5b) of a connection means (5), whereby the barbed end (5b) comprises a barb (9) and the connection means during connection is arranged to protrude into an end of the flexible tube (1), characterized in that said connection clamping device comprises two halves (23a, 23b) which, during connection when the connection means protrudes into an end of the flexible tube, are arranged to be connected and locked to each other by a locking mechanism (33a,33b,34a,34b; 63a, 63b, 64a, 64b) around the connection means (5) and the flexible tube (1), such that the flexible tube (1) is compressed against the connection means (5) by a rib (41a, 41b) provided on the inner circumference of the connection clamping device.

Abstract: An assembly includes a hose having at least a first bead ring disposed proximate a distal end of the hose, and a tapered fitting defining an axial centerline and distal end of the assembly. The tapered fitting further defines a first outer diameter relative the axial centerline, and a second outer diameter relative the axial centerline. The first outer diameter is greater than the second outer diameter, and the second outer diameter is disposed nearer the distal end. The tapered fitting further defines a hollow channel therethrough which is disposed around the axial centerline. The first bead ring is disposed adjacent the second outer diameter of the tapered fitting and remote from the first outer diameter of the tapered fitting. The large bore hose is sealingly secured upon the tapered fitting by interference fit.

Abstract: A radio frequency identification (RFID) smart inspection assurance cap, including a body having a through-bore, an outer surface, and an inner surface and, an RFID circuit including an RFID chip a first circuit lead connected to the RFID chip, and a second circuit lead connected to the RFID chip, the first circuit lead and the second circuit lead electrically disconnected from one another, deactivating the RFID chip wherein the RFID smart inspection assurance cap is operatively arranged on a fluid connector, the first circuit lead is arranged to contact the fluid connector, the second circuit lead is arranged to contact the fluid connector, wherein the RFID circuit is completed when the first circuit lead and the second circuit lead simultaneously contact the fluid connector.

Abstract: A quick-fit connector (1) for the connection of a pipe of a pneumatic system comprises a main body (2) and a pincer body (40). The main body (2) comprises a side wall (30) slidingly insertable in a base portion (58) of the pincer body (40) to prevent the entrance of dust, splinters and similar in the interspace between the pincer body (40) and main body (2).

Abstract: A bathroom quick coupling includes a main body and a positioning clamp. One end of the main body is recessed to form a hollow room and an opening. The hollow room has a thin section and an expanded section. An inner diameter of the expanded section is greater than an inner diameter of the thin section. The expanded section is connected to a side of the thin section distant from the opening. The positioning clamp is in the hollow room and has a base in ring shaped. A plurality of clamping blocks is extending from one side of the base. The clamping blocks surround the base and are arranged spacedly with each other for engaging with and positioned with the external pipe. Each of the clamping blocks is slightly deformable within a gap between adjacent clamping blocks, and the clamping blocks are correspondingly extending to the expanded section.

Abstract: A kit including a central adaptor (10) and interchangeable terminators (40) that are configured to connect two separate lines via the central adaptor (10) is described. The central adaptor (10) comprises two end connectors (20) onto which first and second terminators (40) are coupled, and the first and second lines are then coupled to the respective terminators (40) such that the lines are in fluid communication with each other. The lines may be of different diameters. The terminators (40) contained within the kit comprise a range of diameters, thereby facilitating connection of a respective range of lines.

Abstract: A quick connector and assembly therewith is provided. The connector includes a housing having a tubular housing wall with an inner surface extending between open opposite ends with at least one locking opening extending through the wall. The inner surface bounds a through bore and forms a radially inwardly extending shoulder. A retaining member has an annular retainer wall with inner surface sized for receipt about at least a portion of the housing wall. The retainer wall has at least locking member resiliently biased radially inwardly for receipt through the opening of the housing wall in axially spaced relation from the shoulder by a gap, in which the annular collar of the insertion member is received and locked. The at least one locking member is restrained against substantial axial and rotational movement within the at least one opening, and thus, prevents unwanted removal of the insertion member from the housing.

Abstract: Provided is a joint device which can be connected by quick and simple operation while being subjected to high-pressure high-flow-rate pressurized operating oil. The present invention comprises: a closed chamber 27 provided in a hydraulic circuit on which pressurized fluid acts, the pressurized fluid circuit having an upstream side and a downstream side, which are closed by an upstream-side stop valve 211 and a downstream-side stop valve 212; a male joint 30 provided at a position in communication with the closed chamber 27; and a female joint 40 connectable to the male joint 30 and provided in an emergency hydraulic circuit connected to the hydraulic circuit. The present invention is configured so that the female joint 40 is connected to the male joint 30 while the closed chamber 27 is closed by the upstream-side stop valve 211 and the downstream-side stop valve 212.

Abstract: A method of making a fluid manifold may include the use of a mold, a mandrel, and a distal support. A fluid manifold may include a primary channel, a plurality of secondary channels, and a distal channel, and the primary channel may be coterminous with the distal channel.

Abstract: A device (130) and method for intervening on a branch of a fluid conduit (20), the device comprising: a removable flange (105) comprising: two portions (110, 115) linked by a removable junction (120) having, when the two portions are linked, an opening surrounding the branch and a locking means (130) for locking the flange around the branch such that the opening sealingly surrounds the branch, an inflatable airlock (135) comprising: an inflatable body (140) having at least one inflatable protuberance (145) and a means (150) for sealed attachment to the flange.

Abstract: A hand tool that is capable of efficiently, inexpensively, and quickly attaching to a pipe and allows for boring an access hole to be used for accessing the inside of the pipe and unclogging the pipe.

Abstract: A restraint system for use in securing temporary flow lines that include multiple pipe sections, each pair of pipe sections connected together with a fitting or coupling such as a hammer joint coupling. The system includes multiple pluralities of endless loop slings connected end to end with a cow hitch or girth hitch knot. Disconnectable fittings (e.g., shackles) are placed every three or more slings so that easy disassembly is afforded in case of leakage or other failure.

Abstract: A method and system for evaluating the interior surface and exterior wall conditions of a pipeline while also dynamically installing a repair coating in a pipeline, such as an underground water pipeline. The system is towed into the pipeline and drawn back therethrough. As the system is drawn back, one module in the system evaluates the surface condition of the interior of the pipe and another module evaluates the structural condition of the wall of the pipe. Based on the evaluation data obtained from the two modules an epoxy material is applied to the interior surface of the pipe using a spin cast machine that is drawn behind the two modules. Preferably, a layer of epoxy is applied to the interior surface of the host pipe to the appropriate thickness based on the pipe condition as determined by the two modules.

Abstract: A reinforced pipe and a method of preparing the reinforced pipe are provided. The reinforced pipe has repair area where a wrinkle bend is present in a center section of the repair area. The reinforced pipe comprises a unidirectional fabric circumferentially wrapped around the repair area of the pipe so as to result in multiple layers of the unidirectional fabric around the repair area. The unidirectional fabric is composed of high-performance fibers with at least 90% of the high-performance fibers oriented in the 90° direction, and the unidirectional fabric is wrapped such that the high-performance fibers run in the axial direction. The reinforced pipe further comprises a bidirectional fabric wrapped of over the unidirectional fabric such the at least one layer of bidirectional fabric is wrapped over the unidirectional fabric.

Abstract: A pipe coupling encapsulation assembly includes a repair coupling including an elastomeric seal, clamp members and one or more tightening elements for tightening the clamp members towards each other, and a grip member assembled in the repair coupling. The grip member is formed into an at least partially circumferential band. The band includes a plurality of pipe interface members with protrusions capable of digging into an outer surface of a pipe being sealed. The grip member includes a plurality of radially inner and radially outer bends. The pipe interface members and the protrusions are located at radially inward surfaces of the inner bends.

Abstract: A CIPP liner reel system for managing the utilization and deployment of CIPP liners. The CIPP liner reel system generally includes a frame connected to a reel and drive unit. The drive unit is connected to the reel to control the rotation of its core. This core contains an opening that provides access to a connector unit within the core. This connector unit can be used to connect the reel to the end of a CIPP liner using a strap. Rotation of the core causes CIPP liner to wind on to or unwind from the reel. The reel may also contain a left guide member and a right guide member to assist in controlling the process of winding and unwinding the CIPP liner. The frame may also include a tractor connector that enables the CIPP liner reel system to be coupled to and transported by a tractor without affecting its operation.

Abstract: Methods are disclosed for refurbishing an existing host pipe. According to presently preferred embodiments, a first phase is to make a longitudinal cut in the host pipe. A second phase is an expansion phase, wherein the host pipe is expanded, preferably nondestructively, via separation of the longitudinal cut. A third phase is to insert liner pipe sections into the expanded host pipe. In confined space environments, sections of liner pipe are concatenated end-to-end as they are inserted into the host pipe. In some embodiments, the expansion phase and the liner pipe section insertion phase may be combined. A fourth phase is to grout the annular space formed between the host pipe and the concatenated liner pipe sections.

Abstract: A clamp for a pipe is disclosed. The clamp for a pipe includes: a crevice corrosion-resistant member surrounding the outer surface of the pipe; and a body that is assembled to allow the crevice corrosion-resistant member to be disposed inside thereof and has opening walls formed at both ends thereof, each of the opening walls having an opening hole through which the pipe passes, wherein the crevice corrosion-resistant member is provided to have the same length as a distance between the opening walls, and thus ends of the crevice corrosion-resistant member can be supported by the opening walls, respectively.