A structural connection between in-line circular or rectangular pipes. The connection is maintained within the outer dimensions of the pipe or tubes, eliminates the need for numerous large welds, and provides for a large center hole that enables items to pass through the connection inside the pipes.

An integral nozzle with a section of pipe having a weld end and a flange end. Proximate the flange end there can be a thickened section to strengthen and stabilize the integral nozzle. The wall thickness of the section of pipe can be less than a standard size, such as schedule 40 or schedule 80 pipe, thereby reducing the weight, overall circumference of the weld end, and required material to make the integral nozzle.

The invention relates to a method for producing a pipeline of a fire extinguishing installation. The method includes providing a first hollow body and a second hollow body, positioning the hollow bodies relative to one another in a welding zone such that the connection of the hollow bodies can be performed in the welding zone, positioning a collecting container within the first and/or second hollow body in the region of the welding zone, welding the first hollow body to the second hollow body in the welding zone such that the pipeline element is obtained, wherein a fully encircling weld seam is generated which has a root extending on the inside of the pipeline element; and collecting, by the collecting container, weld spatter that occurs on the inside of the pipeline element during the welding process.

An adaptor assembly includes: an adaptor piece including: a forged outer wall defining a substantially cylindrical shape; a through hole disposed at a top portion of the adaptor piece, the through hole defining an adaptor center cavity; a threaded portion disposed beneath the through hole; and a second hole disposed beneath the threaded portion. The adaptor assembly includes a hex socket including external threading. A diameter of the through hole is smaller than a diameter of the second hole. The hex socket is inserted through the second hole and screwed into the adaptor piece such that the external threading mates with the threaded portion.

A connecting tube portion protrudes outward from an outer wall of the main pipe and is continuous with the interior of the main pipe. The connecting tube portion has an annular groove, into which the distal end of the branch pipe is fitted, at the distal end. The branch pipe includes an outer circumference seal portion that provides a seal between the outer circumferential surface of the distal end of the branch pipe and the inner surface of the annular groove of the connecting tube portion through contact between the outer circumferential surface and the inner surface. The branch pipe also includes an inner circumference seal portion that provides a seal between the inner circumferential surface of the distal end of the branch pipe and the inner surface of the annular groove of the connecting tube portion through contact between the inner circumferential surface and the inner surface.

An apparatus for sealing a hole or a shape in a surface may be disclosed. According to an exemplary embodiment, a soft material may be provided containing an interior hole, an exterior surface, a top lip, and an outer area. In an exemplary embodiment, a bottom lip may be further incorporated. In another exemplary embodiment, a rough surface may be imprinted onto the pipe seal apparatus. The rough surface may be imprinted into the interior portion of the body and the exterior portion of the body and the top lip, or both. An adhesive pipe sealant may be used along the rough surface. The rough surface may have a higher overall surface area for the adhesive to bond to, creating a stronger bond and preventing delamination.

Apparatus and method of forming connector brackets for irrigation laterals along a prefabricated lay-flat pipe and lay-flat pipe with such connector's brackets, wherein an opening is formed at one wall of the premanufactured pipe, a separation means is positioned inside the pipe opposite the opening while separating the one wall from the second wall of the pipe, and an injunction molding is performed into a mold cavity, in order to form the bracket affixed to the one wall of the prefabricated pipe and around the opening.

A joint comprising two intersecting cylindrical tubes joined orthogonally and reinforced internally by a Steinmetz solid connector having a shape defined by the volume of intersection of the hollow regions of said tubes. The joints can be made releasable or permanently fixed. Methods and kits for building strong orthogonal joints using Steinmetz solid connectors are also described.

The pipe access device is comprised of a curved plate adapted to engage an underground pipe along an arc of the outer surface of the pipe, and a boss extending upwardly from the curved plate about an aperture in the curved plate. The boss is adapted to receive an extension pipe. The boss includes a flange adapted to engage ad end of the extension pipe. A gasket is combined with the flange to help seal the connection between the boss and the extension pipe. The pipe access device is for use in providing access to the buried pipe that requires minimal excavation and disruption of the soil.

The invention provides for a secondary overflow pipe and connector (10) connectable to a sewer system, the secondary overflow pipe increasing overall capacity of the sewer system during peak flows, the connector (10) connectable to a manhole (16) and shaped to define a funnel to reduce turbulence and facilitate a smooth flow pattern and maximum flow capacity.