An air distributor may include a thin-wall main pipe (10) and branch pipes (48) distributed on the main pipe. The branch pipes may be symmetrically fixed on the main pipe by locking device disposed in the main pipe. Welding is not needed, and disassembly and maintenance are easy. The main pipe is thin-wall pipe, therefore the weight of the device is greatly reduced, and the production cost is decreased.

An air distributor may include a thin-wall main pipe (10) and branch pipes (48) distributed on the main pipe. The branch pipes may be symmetrically fixed on the main pipe by locking device disposed in the main pipe. Welding is not needed, and disassembly and maintenance are easy. The main pipe is thin-wall pipe, therefore the weight of the device is greatly reduced, and the production cost is decreased.

In an implementation, a hydraulic assembly comprising an end section of a hydraulic hose formed from a volume of material, the end section having a first outer diameter and an open end, is formed by molding a flange in the end section of the hydraulic hose, and threading an annular gasket onto the end section of the hydraulic hose between the flange and the open end of the hydraulic hose, and adjacent to the flange. The flange is formed in the volume of material, and has a second outer diameter greater than the first outer diameter. The molding of the flange may include applying heat to a mold, inserting the open end of the end section of the hydraulic hose into the mold, and thermally deforming a portion of the end section of the hydraulic hose to form the flange.

A trench is dug under an above ground water storage tank either before erection of the walls or after the wall is erected. A (rectangular) sump is preferably made of ? inch steel. It serves as a conduit from an inner tank liner port to an outside tank fill or drain port. The system eliminates hoses hung over the top edge of the tank wall. A pump can fill the tank from the outer port. The tank can be drained using head pressure of the water and/or a pump.

A trench is dug under an above ground water storage tank either before erection of the walls or after the wall is erected. A (rectangular) sump is preferably made of ? inch steel. It serves as a conduit from an inner tank liner port to an outside tank fill or drain port. The system eliminates hoses hung over the top edge of the tank wall. A pump can fill the tank from the outer port. The tank can be drained using head pressure of the water and/or a pump.

An insertion probe adapter for fluid sample extraction from a pipeline for mounting of an overlying housing element is illustrated and described. The invention permits disengagement of an insertion probe from the body of the probe adapter without disassembling the body from the pipeline and without disassembling the overlying housing element from the body.

An insertion probe adapter for fluid sample extraction from a pipeline for mounting of an overlying housing element is illustrated and described. The invention permits disengagement of an insertion probe from the body of the probe adapter without disassembling the body from the pipeline and without disassembling the overlying housing element from the body.

The invention relates to a connection device for connecting a main pipe (1) to a secondary pipe (2), comprising a substantially cylindrical connection piece (3), able to be inserted, preferably able to be screwed, into a wall opening of the main pipe (1), for connection of the secondary pipe (2), wherein for sealing the connection piece (3) a preferably ring-shaped sealing element (4) is provided, lying against the main pipe (1), which sealing element is connected directly or via mechanical connecting elements to an outer circumference of the connection piece (3).

The invention relates to a connection device for connecting a main pipe (1) to a secondary pipe (2), comprising a substantially cylindrical connection piece (3), able to be inserted, preferably able to be screwed, into a wall opening of the main pipe (1), for connection of the secondary pipe (2), wherein for sealing the connection piece (3) a preferably ring-shaped sealing element (4) is provided, lying against the main pipe (1), which sealing element is connected directly or via mechanical connecting elements to an outer circumference of the connection piece (3).

A plumbing fitting assembly includes an anchor member for being received in a transverse hole in a structure. One end of the anchor member is externally threaded and the other includes a catch portion for engaging a surface of the structure adjacent the hole. The threaded end is threaded into a clamping member configured to form a seal with the opposite surface of the structure or another liquid conveying structure. The anchor member can include a tool formation for mating with a rotating structure of a tool. The assembly can include a lock ring for being lockingly received in an interior passage to prevent the catch portion from deflecting inwardly when installed. The plumbing fitting assembly can also be configured for forming a plumbing fitting at a transverse hole in a flexible, liquid-impermeable panel.