Provided herein is a liner that can be loosely inserted in process pipe to form a lined pipe and to decrease the rate of heat transfer between process fluids flowing through the liner and the process pipe. The liner provided herein can reduce applied thermal loading on the outer pipe resulting from, for example, turbulent mixing between fluids having different temperatures (with or without stratification), circumferential thermal gradients, and/or longitudinal thermal gradients. An annulus between the process pipe and liner can be at least partially filled by process fluids, thereby creating a thermal buffer to further decrease the rate of heat transfer between the fluids and the process pipe.

Provided herein is a liner that can be loosely inserted in process pipe to form a lined pipe and to decrease the rate of heat transfer between process fluids flowing through the liner and the process pipe. The liner provided herein can reduce applied thermal loading on the outer pipe resulting from, for example, turbulent mixing between fluids having different temperatures (with or without stratification), circumferential thermal gradients, and/or longitudinal thermal gradients. An annulus between the process pipe and liner can be at least partially filled by process fluids, thereby creating a thermal buffer to further decrease the rate of heat transfer between the fluids and the process pipe.

A fluid conduit has a longitudinal flow passage which includes a transverse cross section that is configured as a polygon, such as a convex or a concave polygon.

A fluid conduit has a longitudinal flow passage which includes a transverse cross section that is configured as a polygon, such as a convex or a concave polygon.

A quick connector for plastic pipe includes a pipe-shaped body and a quick-connect structure. The quick-connect structure includes a mounting pipe and a sealing ring. A gasket, a circlip and a covering ring are sequentially disposed in the mounting pipe. The sealing ring is pressed to be fixed between the pipe-shaped body and the gasket, the covering ring is fixedly disposed in the mounting pipe. A stopping ring coaxially extends on an inner side of the covering ring. The stopping ring is sleeved on an unlocking cylinder such that the unlocking cylinder is slidable relative to the stopping ring. An abutting ring coaxially extends on an outer wall of the unlocking cylinder with a chamfer being disposed at one end of the abutting ring facing the pipe-shaped body, and a pushing ring extends coaxially on the outer wall of the unlocking cylinder at one end outside the mounting pipe.

A method of manufacturing an insulation elbow can include placing raw material at a processing machine. The method can further include implementing, at the processing machine, insulation elbow processing instructions for creating a plurality of insulation elbow segments from the raw material. Each of the plurality of insulation elbow segments can correspond to the insulation elbow such that the plurality of insulation elbow segments are configured to be assembled to form at least part of the insulation elbow. The method can also include creating, at the processing machine, the plurality of insulation elbow segments from the raw material according to the insulation elbow processing instructions and placing the plurality of insulation elbow segments in a package.

A method of manufacturing an insulation elbow can include placing raw material at a processing machine. The method can further include implementing, at the processing machine, insulation elbow processing instructions for creating a plurality of insulation elbow segments from the raw material. Each of the plurality of insulation elbow segments can correspond to the insulation elbow such that the plurality of insulation elbow segments are configured to be assembled to form at least part of the insulation elbow. The method can also include creating, at the processing machine, the plurality of insulation elbow segments from the raw material according to the insulation elbow processing instructions and placing the plurality of insulation elbow segments in a package.

A fluid medium flow apparatus for use in a conduit defining a primary channel through which a fluid medium flows includes a vent portion that includes a continuous outer wall situated in the conduit and having a tubular configuration defining an interior area, the vent portion defining an inlet and an outlet downstream of the inlet and includes a radius bend between the inlet and the outlet. A vane is mounted in the interior area intermediate opposed inner surfaces of the continuous side wall and having a length extending between a start of the radius bend and an end of the radius bend and includes a width equal to an inner diameter of the continuous outer wall. The vane dissects the primary channel of the conduit into an inner channel and an outer channel such that the fluid medium is bifurcated into an inner fluid portion and an outer fluid portion.

A fluid medium flow apparatus for use in a conduit defining a primary channel through which a fluid medium flows includes a vent portion that includes a continuous outer wall situated in the conduit and having a tubular configuration defining an interior area, the vent portion defining an inlet and an outlet downstream of the inlet and includes a radius bend between the inlet and the outlet. A vane is mounted in the interior area intermediate opposed inner surfaces of the continuous side wall and having a length extending between a start of the radius bend and an end of the radius bend and includes a width equal to an inner diameter of the continuous outer wall. The vane dissects the primary channel of the conduit into an inner channel and an outer channel such that the fluid medium is bifurcated into an inner fluid portion and an outer fluid portion.

A sprinkler configured for engagement with a coupling, the sprinkler including a raised lip end; and a distal end disposed opposite from the raised lip end, the sprinkler defining a raised lip between the distal end and the raised lip end, the sprinkler defining a groove between the raised lip and the distal end.