Abstract: A corrugated steel pipe is disclosed. The corrugated steel pipe comprises a plurality of unit steel pipes, which are continuous in the axial direction. Each unit steel pipe comprises a first cylindrical pipe obtained by bending a first unit steel plate into a cylindrical shape, both ends of the first unit steel plate abutting each other and forming a first seam on one side of the first cylindrical pipe; and a second cylindrical pipe obtained by bending a second unit steel plate into a cylindrical shape, both ends of the second unit steel plate abutting each other and forming a second seam on one side of the second cylindrical pipe. The second cylindrical pipe is bent into a cylindrical shape and folded on the outer surface of the first cylindrical pipe so that the inner surface of the second unit steel pipe surrounds the first seam. The second seam is positioned not to correspond to the first seam.

Abstract: An assembly includes a first enclosed flexible pressure chamber. A first extension arm extends from a first endwall of the first enclosed flexible pressure chamber. A second enclosed flexible pressure chamber includes a second extension arm extending from a second endwall of the second enclosed flexible pressure chamber. A lever arm is disposed on a pivot. A first end of the lever arm is attached to the first extension arm and a second end of the lever arm is attached to the second extension arm. A variable restriction element is connected to the second end of the lever arm.

Abstract: A septic line cleaning assistance device that positions into alignment with a lower opening in a T-pipe to plug the lower opening in the T-pipe. The blocked lower opening enables a suction apparatus to suck waste from a pipe connected to a waste opening in the T-pipe through an upper opening in the T-pipe. A rod is configured to be inserted along the T-pipe and positioned into place along the T-pipe. The rod comprises a plug end holding the plug that is configured to frictionally engage the lower opening in the T-pipe to effectively seal the lower opening. A handle end having a grip enables the positioning of the plug over the lower opening, and pulling the plug into a mating position with the lower opening. An adjustable peripheral fastener is slidably positioned over the upper end of the T pipe to hold the device and plug in place.

Abstract: A fluid flow control unit, in a preferred embodiment, mounted on a section of pipe having a tubular wall forming a fluid flow passage with a flow axis, the unit having a gate section, and a gate pivot section, the pivot section having a body portion mounted on the pipe outer wall surface, a gate mounting cavity formed in the body portion and opening through the pipe wall and providing an access port for the gate section to the mounting cavity, a pivot shaft positioned in the cavity and mounted on bearing structure on the body portion, the diameter of the shaft being dimensioned to allow a laterally curved gate which is affixed to a surface portion of the shaft to pivot up against a ceiling of the pipe to thereby be out of the flow passage main stream at a full open, non-blocking position of the gate, and a gate position control structure on the unit for allowing predetermined degrees of rotation of the pivot shaft in response to the magnitude of fluid flow pressure forces directed against the gate.

Abstract: A nozzle is configured for interaction with a sewer inlet fitting. The sewer inlet fitting is configured for connection to a sewer inlet of a sewer system or sewage receptacle. The sewer inlet fitting includes a cover operable between open and closed conditions by action of the nozzle being inserted thereinto and withdrawn therefrom.

Abstract: A valve including a valve body having an area of weakness along which the valve body is predisposed to break. The valve further includes a closure valve positioned in the valve body, wherein the valve body includes a chamber configured to retain fluid therein to thereby maintain the closure valve in an open position. The valve is configured such when at least part of the valve body is sufficiently displaced or broken along the area of weakness at least part of the fluid in the chamber escapes the chamber, thereby causing or enabling the closure valve to move to a closed position.

Abstract: Disclosed is a rotary valve 1 comprising a stator 20 and a rotor 40 generally in rotary sliding engagement with the said stator about a valve axis RA, the stator including a plurality of fluid ports 22, 26, 28, the rotor 40 being operable to selectively fluidically interconnect two or more of said ports during its rotary sliding engagement. The valve further includes an actuator (70) for disengagement of the rotor from the stator to enable efficient cleaning of the valve interconnections.

Abstract: A method, system, and apparatus are provided for a safety relief bypass system for an oil pumping pipeline that provides pressure relief to the pipeline in order to prevent and reduce pipeline rupture. More specifically, the bypass system can include one or more rupture discs having a specific burst pressure that allows fluids under pressure to bypass through alternative pipeline thereby preventing damage to other piping components.

Abstract: A pump features a casing assembly having a region through which high velocity fluid and solids circulate, a chamber where they do not, an aperture that allows a related-chamber to be in fluidic communication with the region, but not the circulating high velocity fluid and solids, and a corresponding aperture to allow the related-chamber to communicate with an external region outside the casing assembly; and a rupture disc received in the corresponding aperture to close the related-chamber subjects the related-chamber and the rupture disc to pressure contained within the region and to release pressure exceeding a predetermined relief pressure of the rupture disc from the related-chamber to the external region or location, and exhaust piping couple the rupture disc to provide a path for escaping vapor and solids to be directed to the external region or location where the energy can be dissipated.

Abstract: A container (10) for receiving biopharmaceutical content (C) in liquid, fluid or gaseous form, includes a peripheral wall (12) that is closed on itself, at least one transfer pipe (22), at least one guiding element (30; 130), and wherein the at least one guiding element (30; 130) includes a gripping member (32; 132) and an attachment member (44; 144). The gripping member (32; 132) and the attachment member (44; 144) are structurally separate and independent of one another and the guiding element (30; 130) has reciprocal assembly elements (60; 160) allowing the structural or functional assembly of the gripping member (32; 132) with the attachment member (44; 144) to ensure the positioning of the gripping member (32; 132) close to the attachment member (44; 144) and the connecting area (46; 146) of the corresponding peripheral wall (12).

Abstract: A keg adapter to alleviate keg valve coupler system incompatibility. The keg adapter has a first end and a second end, the first end being compatible with at least one tap head coupler and having a diameter greater than the second end and the second and being compatible with at least one keg valve system. The keg adapter may be compatible with any combination of tap head coupler and keg valve system. A method of installing the keg adapter onto a keg for dispensing beer is disclosed. Also a method of using a keg adapter to dispense beer from a keg.

Abstract: A circumferential welded joint of a line pipe is formed by butting against each other end portions of steel pipes having a yield strength according to 5L Specification of API Standards not smaller than 555 N/mm2 and welding the butted portions in a circumferential direction. A joint strength ratio ?match=(TS-w/TS-b)·(YS-w/YS-b) represented by a product of a ratio between a tensile strength TS-w of a weld metal and a tensile strength TS-b of a base material and a ratio between a yield strength YS-w of the weld metal and a yield strength YS-b of the base material, and a critical equivalent plastic strain ?p-cri [%] for ductile crack generation in a base material heat affected zone satisfy Equation (1), and the yield strengths YS-w, YS-b of the weld metal and base material satisfy Equation (2). ?match>4.85?p-cri?0.31??(1) YS-w/YS-b?1.

Abstract: A drain fitting for use in an irrigation system for draining water from the irrigation system, regardless of pipe size in the irrigation system, generally includes a grip portion and a neck coupled to the grip portion. The neck defines a first engagement portion having a first diameter, for coupling the drain fitting to a pipe of the irrigation system having a diameter corresponding to the first diameter of the first engagement portion, and a second engagement portion having a second diameter, different from the first diameter, for coupling the drain fitting to a pipe of the irrigation system having a diameter corresponding to the second diameter of the second engagement portion.

Abstract: A chemical regulation system according to various embodiments of the present technology is configured to regulate the flow rate of a liquid and monitors the chemical composition of the liquid. The chemical regulation system may comprise various valves, fittings, and couplings configured to regulate the flow of the liquid through a production tank and into a chemical hopper to product a highly concentrated liquid/chemical solution that is provided to the production tank. The chemical regulation system may comprise a controller to electrically control various valves. The chemical regulation system may comprise a device for facilitating the flow of a liquid out of a production tank.

Abstract: An apparatus for servicing a tank and/or a plug includes a valve having a first port sealingly couplable onto a tank port surrounding the plug, a second port, and a valve member operable between an open position providing a pathway between the first and second ports, and a closed position providing a sealed barrier between the first and second ports. The apparatus further includes an adapter sealingly couplable to the second port, and a plug displacement tool couplable to the adapter for displacing the plug relative to the tank when the first port is coupled to the tank port, the adapter is coupled to the second port, and the valve member is in the open position.

Abstract: A valve device includes: a poppet that is formed in a hollow shaft shape except for a leading end, has a tapered closure part at the leading end and a side hole passing through a wall of the hollow shaft-shaped part, and rotates around a shaft center thereof during opening and closing actions; and a valve seat having a sloped seat surface with which the closure part of the poppet comes into contact when closing the valve device. The closure part of the poppet or the seat surface of the valve seat, whichever has a higher hardness, has a cut mark of the opposite direction from a direction of rotation of the poppet around the shaft center that occurs during the valve closing action.

Abstract: A check valve including a clevis, a hinge pin, a hinge configured to be rotatably coupled to the clevis by the hinge pin, and a disc configured to be detachably coupled to the hinge. The hinge includes a first hinge member having a male interlocking feature and a second hinge member defining a female interlocking feature corresponding to the male interlocking feature. The second hinge member is configured to be detachably coupled to the first hinge member. When the first hinge member is coupled to the second hinge member, the male interlocking feature of the first hinge member is received in the female interlocking feature defined in the second hinge member to prevent angular separation of the first and second hinge members about the hinge pin. The first and second hinge members may define a non-circular opening configured to prevent rotation of the disc relative to the hinge.

Abstract: A valve integrated pressure regulator (VIPR) device that can be attached to the outlet of a gas cylinder, which can monitor the amount of gas in the cylinder is provided. Features of the disclosed device include an electronic control, electronic alarm and the electronic display that are powered by rechargeable battery that may be disposed within the VIPR shroud or within a removable cylinder base affixed to a bottom of the gas cylinder. Additional functionality and security features may be provided via additional internally disposed sensors and/or wireless or hard-wired communications with one or more auxiliary devices.

Abstract: A new valve assembly is provided that includes an actuator, a housing assembly, and a valve for diverting the flow of liquids through pipelines. Embodiments of the present invention include a yoke with transparent windows, a long valve stem, a bushing nut, an actuator shaft, a jam nut, a stem nut, a union nut to interconnect the valve stem to the actuator output shaft, a position indicator, an indicator plate, and a valve mounting bonnet and lock ring to interconnect the yoke to the valve. The housing assembly includes components to interconnect the actuator output shaft to the valve stem that reduce the side-to-side movement of the actuator output shaft, which in turn reduces the failure rate of the valve assembly.

Abstract: A gripping apparatus for use in gripping a pipe, for holding forces, or restraining relative movement. The pipe defines an inside radius. The gripping apparatus has an outer surface where the outer surface defines a transition surface or a curve. In certain embodiments the transition surface or curve has a radius less than or equal to the inside radius of the pipe.