Abstract: A rotary threaded penetrator bolt means having a tubular hollow pin therein is employed to contact against a hardened cylindrical punch means to linearly advance the punch without rotation thereof through the wall thickness of the fluid containing member desired to be pierced. In such arrangement, if the wall thickness of the fluid containing member is sufficiently great, it may be desirable to pre-drill a punch receiving cylindrical recess therein prior to operation of the penetrator bolt means.

Abstract: The method comprises the steps of: digging out a continuous groove (13) in the wall of the tubing at the location of the tapping point to be made, said groove being slightly shallower than the thickness of the wall, thereby leaving a membrane (14) of metal at the bottom of the groove between the inside of the tubing and the outside atmosphere; placing a sealed isolation unit on the tubing, said unit covering a wide area which is at least equal to the area delimited by the groove; breaking the metal membrane so as to make an opening in the wall of the tubing; removing the cut out portion of the wall; welding on a blind tail pipe; and removing the sealed isolation unit. The invention also provides a groove-digging device, and a membrane-breaking punch device (600).

Abstract: An inflatable plug adapted to be inserted into a pipe and inflated so as to plug the pipe and form a water tight seal. The inflatable plug is comprised of an inflatable bag of flexible sheet material forming an elongated cylinder having opposite ends. The material at the opposite ends of the cylinder is pleated or folded and wrapped around cylinders. Metal collars are placed over the folded material and swaged so as to clamp the material in fluid tight relation against the cylinders.

Abstract: A valve which can be inserted in an existing pipe or similar line without disconnection of the line. The valve is separable into two halves which are clamped around the line. The valve handle is then rotated to drive a cutter through the line, and to position an expandable seal across the line bore. Flow through the pipe is thus terminated to enable downstream repairs or installation of new equipment. Retraction of the seal and cutter opens the valve to reinitiate fluid flow, and the valve can thereafter be used as a conventional shutoff valve, as well as providing an auxiliary "T" connection to the line if desired.

Abstract: The freeze protection valve includes a molded plastic valve housing (A) including a peripheral wall (10) which defines an elongated recess (12) therein. The valve housing includes a first seating region (18) surrounding the elongated recess open end, a drain outlet (C) in fluid communication with the elongated recess, and at least one side fluid passage defining configuration (30). The side fluid passage defining configuration defines a first recess (32) having a wall portion (34) which is adapted to be cut through to provide one or more fluid passages (170) into the elongated recess. A first fitting assembly (60) includes a metal nipple (62) having a flange (64) peripherally therearound, a hold down plate (68), and a plurality of screws (70) for pressing the hold down plate and nipple flange in a fluid sealing relationship with the first or second seating region.

Abstract: A hot tape saddle fitting (FIG. 1), has means (5) for connecting a pipe to a chamber (4) having an opening of which a rim (14) in use seals with the exterior of a pressurized main pipe encircled by a collar (1). The fitting is characterized in that a cutter (6) within chamber (4) is operable to cut the saddled main pipe in a chordal direction whereby to connect the pipe to the mains pipe. For preference chamber (4) extends as an elongate tubular body (3) in the chordal direction and cutter (6), is hollow, tubular, sharpened at one end (61), closed at the other end (63), and sealing slideable within body (3).

Abstract: In a method of forming a branch connection in a fluid carrying pipe (3) by attaching to the pipe (3) a saddle unit (1) incorporating a cutting member (11) capable of being operated to cut a hole in the pipe wall, the cut is effected so that it extends only partly around the circumference of a circle so as to form a tongue (18), and the tongue is bent into the pipe while remaining connected to the adjoining part of the pipe wall.

Abstract: A piercing valve comprises upper and lower blocks having, respectively, lower and upper mating surfaces. Each mating surface has a positionally corresponding generally linear groove extending thereacross. The upper block has a cylindrical bore extending vertically therethrough and intersecting the grooved lower surface thereof. An upper bore section is adapted for receiving screw threads, with the topmost section of the bore having a diameter less than that of the threaded upper section thereof; the lower section of the bore is of a diameter larger than that of the upper section. The upper block further has an access port extending therethrough and intersecting the bore along the lower section thereof, a cylindrical piercing needle, and a cylindrical unitary seal.

Abstract: A pair of vacuum chambers (27 and 28) are mounted on a T-bar gripper (19) which engages the back walls of a pair of adjacent batteries (16). Operation of a knurled, internally threaded collar (23) draws the vacuum chambers into sealed (54) engagement with the battery casings. A pair of drills (66) mounted at acute angles greater than 45.degree. are operated to drill angular holes (71) through the casings into the vicinity of the bottoms of the casings. Application of vacuum to the chambers draws electrolyte from the casings to levels below the levels of the entries of the angular holes into the casings.

Abstract: A structural kit for the installation of a flow regulator valve in pipeline without interruption of the fluid flow in the pipeline. To make precise cutting of the desired portion of the pipeline in simple cutting operation and to just fit the valve into the cut-away portion thereof, a plane of the ring-shaped gear having cutting tools is tilted against a plane perpendicular to the axis of the pipe so as to cut away the pipe section the upper portion of which is longer than that of the bottom portion thereof.

Abstract: A segment is cut off a rotating hexagonal bar by opposed cutting tools which form a raised seat for a sealing gasket. The segment defines a hexagonal valve body into which coaxial larger-diameter and smaller-diameter holes are drilled from oppositely facing walls of the six walls of the body, respectively, and a round distribution chamber or port is drilled through the seat centrally thereof and into one side of the body. An internally threaded sleeve is tightly fitted into the smaller-diameter hole and extends toward the chamber to define a back seat. A charging port is drilled through the opposite side of the body and into the sleeve inwardly of its threads. A valve stem with a head at one end having a smaller diameter than the larger-diameter hole is inserted therethrough and is threaded into said sleeve until the head is in the chamber and the opposite end of the stem projects externally of the sleeve for actuation of the head.

Abstract: An irrigation fitting cooperable with a tool to penetrate the wall of an irrigation conduit comprising a body having a flow passage therein opening at a first location adjacent one end of the body and at a second location spaced from the first location. One end of the body is shaped to form a piercing point for penetrating the wall of the irrigation conduit. A shoulder is provided on the body intermediate the first and second locations and facing in a direction so that a tool can act against the shoulder to force the piercing point to penetrate the wall of the irrigation conduit. Orienting surfaces are provided on the body adjacent the shoulder for cooperating with the tool to orient the irrigation fitting relative to the tool.

Abstract: A storage tank for a volatile inflammable liquid is provided with an attachment fitting to which an elbow assembly can be attached to support a tapping machine. If the tank primary vessel fails, liquid retained by a secondary containment vessel can be drained out by using the tapping machine to make a hole through the attachment fitting and vessel walls. The attachment fitting is installed, when the tank is built, without impairing the integrity of the primary or secondary vessel walls or providing a hole therein.

Abstract: The present invention relates generally to plumbing repair devices and more particularly relates to a new and novel plumbing repair device and method which can be quickly and easily utilized in fluid (i.e. gas, liquid) systems whereby the fluid flow can be terminated, the repair made and the fluid flow re-established with a minimum of time and effort. The repair device and method of the present invention have particular application in such systems where conventional shut-off valves are not available and/or wherein, if they are available, they are not readily useable.

Abstract: A safety valve adapted to be mounted on a submerged section of oil well pipe for sealing the pipe if an oil leak occurs in the pipe above the valve location. The valve includes a collar rotatably mounted on the pipe and is located between a pair of positioning blocks attached to the pipe. The collar forms a liquid tight chamber extending on diametrical opposite sides of the pipe. A circular cutting blade is slidably rotatably mounted in one side of the chamber and has an operating shaft which extends outwardly through an end wall opening formed in the collar. The blade is rotated by external means applied to the end of the operating shaft and cuts a hole in the wall of the pipe. A plug is slidably rotatably mounted in the opposite side of the chamber from the cutting blade and has a shaft which extends outwardly through another end wall opening formed in the collar. The collar is rotated 180.degree.

Abstract: A molded connecting piece has two saddle-shaped pieces one of which carries a hole drilling or punching tool and the other of which is connected to a branch line. The two connecting pieces are interconnected by an annular channel so that, when they surround are attached to a pipeline and a hole is made in the line, the medium reaches the branch line from the pipeline through the hole, through the annular channel and to the branch line. Between the saddle pieces and the pipeline are heating mats by which a tight welding connection can be produced.

Abstract: A method of repairing a leak, where there is a water network with a main shutoff valve. An isolation valve is inserted in the pipe a short distance upstream of the leak, and the leak is repaired by using the local isolation valve to keep water from the repair location. This enables the main shutoff valve to be opened and distribute water to the other areas of the network. The isolation valve is particularly arranged to become a permanent part of the water system after the leak is repaired.

Abstract: A tap operated by a push button which acts to open a valve member which is biassed to the closed position, the valve member being for normal operation of the tap; also operated by the push button is a seal piercing means which pierces a diaphragm in or adjacent the tap inlet and which after initial operation of the push button remains lodged in the pierced diaphragm, the piercing means only being moved by the push button on the initial operation. The arrangement ensures an added protection against oxygen penetrating into a container fitted with the tap and is particularly useful for wine containers where the added protection ensures a longer shelf life.

Abstract: An apparatus and process for restricting fluid flow in a pipeline. An improved inflatable sleeve flow restricting apparatus is disclosed which in one embodiment has restrictor arms extending from one or both ends of the flow restrictor cartridge for engagement with the pipeline side wall at their other ends restricting the inflation of the inflatable sleeve thereby allowing inflation to greater inflation fluid pressures providing pipeline fluid flow restriction in pipelines having pressures of up to about 125 psig. A combination boring-insertion tool is described which utilizes fluid pressure to provide force for the hole cutter.

Abstract: A T-joint having a two-part housing applicable to a pipe contains a member adapted to cut a hole in the pipe when acted upon by an explosive charge to provide a branch conduit from the pipe. The explosive charge is contained in a nut attachable to the housing and is ignited by a percussion cap. The bottom portion of the nut is provided with three concentric recesses, each one smaller than the preceding one. The first recess holds the charge, the second recess holds a breech member for the percussion cap, and the third recess holds an anvil for firing the cap.

Abstract: An improved device for tapping and plugging fluid conductors under high pressure has independently operable feed and cutting motors for improved cutting action. The device has a cutter housing whe precise location of the cutter on the drive axis to allow the cutter to be operated remotely.

Abstract: A pipe coupling, which renders it possible to connect branch pipes (24) to a feed-pipe (1) without requiring the flow in the feed-pipe to be shut off. In a cylindrical guide passageway (5) of one of two coupling parts (2a,2b) embracing the feed-pipe a piston (4) is located, which is provided with a passageway (10) for fluid connection between the feed-pipe and the branch pipe. The piston is provided with an internal knife (9) which upon rotation of the piston cuts up material out of the feed pipe to form the opening to the passageway and projects the cut-up material into the guide passageway (5) to assist in anchoring the coupling in place.

Abstract: To tap a main pipe for connection of a branch pipe thereto, a tubular enclosure is applied to the main so that one end of the enclosure is formed by the main pipe side-wall to be holed. A drill is penetrated through the main pipe side-wall from the interior of the enclosure while being operated from outside the enclosure; the enclosure having its end remote from the main pipe filled by a removable plug which acts as a bearing for the drill-shaft. The enclosure is equipped with a closure member (such as that of a gate valve) which is used as a lock to prevent movement of the plug during drilling. After drilling, the means used to drive the drill are removed and replaced by an extension of the enclosure, the plug is then unlocked so that the plug and the drill retract into the extension under pressure of the main pipe's contents.

Abstract: A T-joint fitting of the type having a two-part housing adapted to be clamped to a transport pipe is provided with a piston, which is axially displaceable within the housing for piercing a hole in the wall of the transport pipe. When the pipe is made of copper or similar soft material the axial movement is caused by a nut used for closing the passage in which the piston operates, the nut further being provided with an internally threaded bore, mating with a rearwardly extending, threaded bar on the piston. The threads on the bar and on the externally threaded portion of the housing, with which the nut cooperates, have the same pitch, but are oppositely handed, so that screwing on of the nut will simultaneously force the piston inwards. The two parts of the housing are clamped together by four bolts, and a packing of elastomeric material covers the part of the transport pipe to be pierced by the piston and has a waffle-textured face to turn towards the pipe.

Abstract: A branch fitting for providing access to the interior of a pipe, the fitting having first and second body portions each having a semi-cylindrical surface adapted to sealably engage the pipe, the body portions being secured together and to the pipe in a pressure retaining relationship, one body portion having a first and second integral cylindrical barrel portion extending in the plane of the tubular axis of the pipe, the cylindrical axii of the barrel portions intersecting each other at a point at or adjacent the pipe wall, a cutter within one of the barrel portions having a shaft extending sealably exteriorly of the barrel portion whereby the cutter may be rotated and axially advanced to form an opening in the pipe, the opening being coincident with the cylindrical axis of the second barrel portion. The second barrel portion may contain a plugging member and means of delivering it into the interior of the pipe through the formed opening.

Abstract: A tapping apparatus and method for making connections to pipelines and vessels while they are in service and contain fluid under pressure. The tapping apparatus and method includes an explosively driven punch that is operated to penetrate the pipeline. A tensile force is applied to retract the punch, and allow the fluid to pass from the pipeline through the apparatus and into the service connection.

Abstract: A pressure regulator and safety valve assembly comprises pressure regulating means and safety valve means. The pressure regulating means is so coupled to the safety valve means that the pressure at which the safety valve means opens varies independence upon the setting of the pressure regulating means. The safety valve means includes a safety valve member mounted for movement relative to a static surface between a closed position in which the safety valve member seals against the static surface and an open position in which the safety valve member is spaced from the static surface.

Abstract: The wall of a pipe is prepared for a subsequent cutting operation by a double-edged shear plate, by cutting axially spaced circumferential notches in such wall with a flexible strand cutter capable of operating in the limited confines of a housing designed in the rectangular pattern of the shear plate. The flexible strand cutter advantageously employs roller cutters on a power transmission type chain which is tensioned against and moved circumferentially over the wall of the pipeline.

Abstract: A tool jig for bringing an implement to bear on an inner tubular 10 of a multi-tubular blown well includes a support 1 attachable to the outer tubular 2 and a tool holder 12. The tool holder has a hollow bore and a valve 24. At its rear end the tool holder is threaded for coupling on an implement and has at its front end a saddle seal for sealing the implement with the inner tubular, via through a window 9 in outer tubular 2. A back-up unit 18 abuts the inner tubular opposite the tool holder 12. The support 1 supports the tool holder 12 and back-up unit 18 via connecting brackets 13, 19. Screw jacks 22 acting through the support clamp the tool holder and backup unit in position.

Abstract: A method to establish flow communication with a tubular pipe (3), and a device for utilization of the method, whereby two housing members (6, 7) are joined in a sealing contact position embracing the tubular pipe (3), whereafter a piston member (1), movably arranged in one housing member (6), having a towards the center of the pipe (3) directed chisel-shaped part (2) extending in a parallel relationship to the length axis of the tubular pipe (3), is brought to move towards the pipe (3) by application of a force and to penetrate through its wall, thereby creating a through slot extending in longitudinal direction of the pipe (3), the edge portions of said slot extending in longitudinal direction of the pipe (3) and being bent into a position directed towards the inside surface of the pipe (3), an adjustment member (5) also being arranged, whereby the piston member (1) can be moved in direction to and from the slot taken up in the pipe (3), thereby faciliating desired adjustment of the flow communicating area w

Abstract: Apparatus adapted to be retrofitted on an existing live pipeline to plug off and isolate a section of the pipe while maintaining flow through an associated bypass circuit. The disclosed apparatus includes a housing to be secured around the pipe and elements operable in the housing to cut into the pipe and establish a closed flow path between one section of the pipe and the exterior of the housing while isolating such flow from a work chamber within the housing and remaining sections of the pipe.

Abstract: An improved fluid control gate for selective insertion through a wall such as a flexible irrigation tube to a pressurized fluid medium such as water under gravity feed. The fluid control gate having a hollow extender mounted through and to the wall for the fluid to flow therethrough, a mating nut for engaging the area of the wall around the extender to the circumference of the extender in order to form a fluid seal therebetween, a formed passageway through the mating nut, and a triangular shaped pivotal plate for selectively reducing the flow of the fluid through the hollow passageway.

Abstract: Apparatus and methods facilitating isolation of a pipe segment for repair thereof include releasable reclosable means for gripping the pipe exterior, a first conduit extending through the releasable gripping means transverse to the pipe when the releasable gripping means is about the pipe with an end of the first conduit terminating proximate the pipe exterior, sealing means sealing between the first conduit and the pipe exterior surface, a second conduit communicating with the first conduit remote from the end of the first conduit which is closest to the pipe exterior, cutting means insertable through the first conduit for cutting an aperture in the pipe wall with the cutting means having a passageway therewithin extending axially from the cutting end to a position along the cutting means lateral surface for withdrawal of fluid from the cutting point, an inflatable bladder insertable into the pipe interior via the first conduit and serving to block the interior of the pipe when inflated and valve means for s

Abstract: Apparatus and method for tapping and extracting an oil sample from a high pressure oil filled pipe-type transmission cable system. The system voltage is very high. Pipe drilling must be carefully controlled to preclude oil and oil pressure release, and to prevent cable conductor contact by the drill. Valve means are attachable to a pipe to be tapped. A fitting having passageway means is attached to the valve. A drill bit extends through the fitting and valve, when in an open position, and is operable to drill a hole through the pipe wall. Sealing means in the fitting are in operative engagement with the drill bit shank and prevent oil and pressure release.

Abstract: An apparatus for removing concentrations of liquid from a natural gas pipeline comprising a tap valve mounted on the pipeline at the upper portion thereof so as to be in communication with the interior of the pipeline. A siphon apparatus is removably mounted on the tap valve and includes a siphon pipe which is vertically movably mounted with respect to the tap valve. The siphon pipe is vertically movable from an upper position wherein the lower end of the siphon pipe is positioned above the tap valve to a lower position wherein the siphon pipe extends through the tap valve so that the lower end of the siphon pipe is positioned at the bottom interior of the pipeline. A discharge pipe extends from the siphon pipe and is in communication with a liquid holding tank. A siphon valve is imposed in the discharge pipe to permit the selective removal of the liquid from the pipeline. A portion of the siphon pipe is enclosed by an operating cylinder barrel.

Abstract: A thermowell or the like is installed in a pipe or similar member without taking the member out of service by first welding an adapter to the surface of the member at the point where the thermowell is to be installed, connecting a gate valve and hot tapping machine to the adapter, drilling a hole in the member through the open gate valve, withdrawing the drill and closing the valve, replacing the drill in the hot tapping machine with the thermowell, opening the gate valve, and installing the thermowell through the open valve. The adapter having a taper internally threaded portion, distal from the ends of a conduit therethrough.

Abstract: A thermowell or the like is installed in a pipe or similar member without taking the member out of service by first welding an adapter to the surface of the member at the point where the thermowell is to be installed, connecting a gate valve and hot tapping machine to the adapter, drilling a hole in the member through the open gate valve, withdrawing the drill and closing the valve, replacing the drill in the hot tapping machine with the thermowell, opening the gate valve, and installing the thermowell through the open valve. The adapter having a taper internally threaded portion, distal from the ends of a conduit therethrough.

Abstract: An emergency pipeline shut-off apparatus for interpositioning within a fluid transmitting pipe circuit in which a resilient plug stopper is capable of alternative placement between an open and closed position to allow or block passage of the fluid respectively. Remote stopper activation elements cooperate with control members and locking features to position the stopper in the desired open or closed configuration followed by the automatic locking of the stopper in that particular position. The remote stopper control device can be expressly reactivated to be withdrawn from its locked position.

Abstract: An apparatus and process for restricting fluid flow in a pipeline by inflation of an expandable flexible sleeve which is attached to a plug having a through hole for the inflation fluid. Several embodiments of flow restrictor cartridges are disclosed including cartridges having retainer arms which pivot outwardly against the interior wall of the pipeline restricting the axial expansion of the flexible sleeve upon inflation, thereby providing higher pressurization of the flexible sleeve for use in pipelines of pressures up to about 100 psi. The flow restrictor cartridges may be used in combination with an insertion assembly and by placement of a boring tip on the flow restrictor cartridge may be used with a disclosed cartridge insertion tool providing reduced loss of pipeline contents upon boring a hole in the pipeline followed by insertion and inflation of the flexible sleeve for restricting fluid flow in the pipe.

Abstract: An apparatus for removing concentrations of liquid from a natural gas pipeline comprising a tap valve mounted on the pipeline at the upper portion thereof so as to be in communication with the interior of the pipeline. A siphon apparatus is removably mounted on the tap valve and includes a siphon pipe which is vertically movably mounted with respect to the tap valve. The siphon pipe is vertically movable from an upper position wherein the lower end of the siphon pipe is positioned above the tap valve to a lower position wherein the siphon pipe extends through the tap valve so that the lower end of the siphon pipe is positioned at the bottom interior of the pipeline. A discharge pipe extends from the siphon pipe and is in communication with a liquid holding tank. A siphon valve is imposed in the discharge pipe to permit the selective removal of the liquid from the pipeline. A portion of the siphon pipe is enclosed by an operating cylinder barrel.

Abstract: Apparatus for controllably transferring fluid from a pierceable pressurized container includes a valve body, a stem member which is threadably connected to the valve body at one end and a fluid-conducting hose at the other end, and an elastomeric valve ball disposed in a cavity between the body and the stem member. The valve ball controls fluid flow from the container through the valve body and stem member to the hose in response to rotation of the valve stem relative to the body. Simultaneously, the valve balls acts as a check valve to prevent flow of fluid to the container. An O-ring seal between the stem and the valve body is adapted to leak at high pressure and bleed off fluid.

Abstract: A method and apparatus are disclosed for blocking the flow of fluids through the interior of an elongated pipe section. The apparatus includes a pair of sectional housing members for interconnection around a flanged pipe joint to form an essentially airtight enclosure. Socket members are provided for selectively loosening and tightening bolts on the flanged pipe joint within the enclosure of the housing member, so that a cut-off blind member may be inserted between the pipe joint sections and then clamped in position to block the flow of fluids. Preferably, the assembly further includes a separate sealing ring mechanism which can be inserted between the pipe sections after the blind is removed, to serve as a replacement for the gasket material originally between the pipe sections.

Abstract: A method for installing an adjustable flow restricting valve member in a tubular pipe, and a valve device for utilization of the method, including the steps of cutting a slot extending in the longitudinal direction of the tubular pipe, inserting a mainly plane valve member through said slot, said valve member being arranged with a stem extending through the slot and facilitating a rotary movement of the valve member from a position corresponding with the length axis of the tubular pipe to a position in contact with the internal wall surface of the tubular pipe, said stem also extending through a member arranged to prevent communication between a medium within the pipe and the outside atmosphere.

Abstract: A T-joint fitting comprising two parts for clamping to an existing length of pipe encloses a piston, which is axially displaceable by firing of a cartridge. The piston cuts a hole in the wall of the pipe and is provided with a transverse passage, which will serve for conducting fluid from the pipe to a second passage in the fitting.The length of the piston is selected so its front, cutting edge rests against the envelope wall of the pipe, when its back face is about level with the open end of the first passage. The cartridge is a disc-shaped shell, having about the same diameter as the portion of the housing enclosing the first passage, this portion having external threads. There is an eccentrically located socket for a firing cap at the face of the shell to be turned outwards in use.A cup-shaped nut engaging these external threads has in its inner bottom surface a recess for reception of the cap containing socket, the recess being further adapted to make the firing cap accessible to a firing pin.

Abstract: Tapping apparatus is provided for cutting an opening in the wall of a conduit and providing fluid tight communication between such opening and a second conduit via a rotatable outlet to facilitate alignment and connection of the second conduit to the tapping apparatus.

Abstract: A service clamp for use as a fitting in tapping a hole in a main pipe and/or for supporting a branch pipe, the service clamp being particularly adapted for use when the main pipe is plastic such as polyethylene (PE) or polyvinyl chloride (PVC) although it may be used with pipe made from other material including metal pipe. The service clamp comprises two saddle parts for encircling the main pipe, one of the saddle parts carrying a branch pipe extension with a throughbore, and each saddle part carrying, prior to assembly of the service clamp, at least one of the screws or bolts used during assembling the clamp about the main pipe.

Abstract: A hollow body is connected by a compression seal and a split collar over a closed end of a first pipe containing fluid under pressure. A lateral screw-type cutter connected to the body has a circular knife edge with one or more scallops, the knife edge being formed and being positioned to cut cleanly a single slug from a first pipe at a point within the body near the seal. An end of the body opposite that end sealed to the first pipe has a nipple to which a second pipe is connected, and a strainer positioned across the nipple retains the slug within the body. Space between the first pipe and the body is sufficient to provide a passgeway for full flow of fluid through the hole of the first pipe to the nipple for the second pipe. The second pipe usually continues in a direction coaxial with the first pipe.

Abstract: A valve assembly adapted to be emplaced upon a pipe comprises a housing having a bore extending perpendicular to the pipe to which the valve is to be connected and serving as a guide passage for a drill adapted to penetrate the pipe wall. The housing is formed with a transverse slot through which a slider can be inserted to block escape of fluid from the passage upon withdrawal of the drill. The control member is then mounted in this passage and can be used to open and close the valve which communicates with the pipe to which the valve connects via the aforementioned slot.

Abstract: Electrical apparatus includes an outer enclosure, an electrode within the enclosure, and an insulating gas electrically insulating the electrode from the enclosure. A support plate is secured to the outer enclosure, and the support plate has an opening therein. A housing, containing valve means, is secured to the support plate adjacent the support plate opening. An end plate is secured to the end of the housing. The valve means in the housing are capable of being in two positions, a first position preventing the flow of gas past said valve means, and a second position wherein an opening which is through the valve means is aligned with the support plate opening.An opening is formed through the enclosure in the wall portion thereof which is in alignment with the support plate opening. The opening through the enclosure is formed without generating contamination particles within the enclosure and in a manner which minimizes escape of gas from the enclosure.

Abstract: A shutoff valve particularly suited for use with fluid pipelines such as natural gas mains or the like constructed from plastic which allows the valve to be selectively opened and closed from a remote location. The valve has a valve body which includes a mounting surface for mounting the valve to the pipeline. A first passageway extends through the valve body into communication with the mounting surface and a second passageway communicates with the first passageway intermediate the ends thereof. Fluid passing outwardly of the valve through the second passageway may be conveyed to the area of useful application. A punch arrangement is included in the first passageway which is conveniently used after valve installation to punch a hole in the side wall of the pipeline to provide fluid communication between the pipeline and valve.