Disclosed herein is a resin-coated aluminum pipe connector for the outdoor unit of an air conditioner. The resin-coated aluminum pipe connector includes: a refrigerant pipe made of aluminum, and configured such that an expanded portion is formed at one end thereof; a service valve including a connection port in which a first inclined surface is formed at an end of the connection port and a first screw portion is formed on the outer circumference of the connection port; a first compression ring configured such that an inclined surface is formed at one end of the inner circumference thereof and a first stop protrusion is formed at the other end of the inner circumference thereof; a second compression ring configured such that a second-first inclined surface is formed on the inside thereof and a receiving side wall extends upward from the second-first inclined surface; a sealing material; and a fastener.

Helically winding an extruded web to form a wall of a heated hose about a central axis, extruding a bead of plastics material around a heating wire such that the extruded bead comprises the heating wire at a first location within a cross-section of the extruded bead, helically winding the extruded bead onto the wall of the hose to provide a support helix, and exerting tension on the heating wire to draw down the heating wire toward the central axis such that the heating wire migrates radially inward from the first location to a second location within the cross-section of the extruded bead.

Provided herein is a resin-coated aluminum pipe connector for the outdoor unit of an air conditioner. The resin-coated aluminum pipe connector includes: a resin-coated refrigerant pipe made of aluminum, and configured such that an expanded portion is formed at one end thereof; a service valve including a connection port in which a first inclined surface is formed at an end of the connection port and a first screw portion is formed on the outer circumference of the connection port; a first compression ring configured such that an inclined surface is formed at one end of the inner circumference thereof and a first stop protrusion is formed at the other end of the inner circumference thereof; a second compression ring configured such that a second-first inclined surface is formed on the inside thereof and a receiving side wall extends upward from the second-first inclined surface; a sealing material; and a fastener.

The gutter-cleaning device is configured for use in removing debris from a gutter. The gutter-cleaning device discharges a flow of water into the gutter that washes away the debris. The gutter-cleaning device is an extension apparatus that extends the reach of a client such that the client can discharge the flow of water into the gutter while standing on the ground. The gutter-cleaning device comprises a plurality of pipes, a plurality of fittings, a hose, and a nozzle. The plurality of fittings interconnect the plurality of pipes to form a fluid network. The fluid network is a fluid series circuit that transports water received under pressure from the hose to the nozzle. The nozzle discharges the water into the gutter that washes away the debris.

The gutter-cleaning device is configured for use in removing debris from a gutter. The gutter-cleaning device discharges a flow of water into the gutter that washes away the debris. The gutter-cleaning device is an extension apparatus that extends the reach of a client such that the client can discharge the flow of water into the gutter while standing on the ground. The gutter-cleaning device comprises a plurality of pipes, a plurality of fittings, a hose, and a nozzle. The plurality of fittings interconnect the plurality of pipes to form a fluid network. The fluid network is a fluid series circuit that transports water received under pressure from the hose to the nozzle. The nozzle discharges the water into the gutter that washes away the debris.

Technologies are described for devices and methods to couple a hose to another hose or apparatus. The device may comprise a first side with at least two barbed fittings, each configured to insert into a flexible hose to create a waterproof seal. A diameter of each barbed fitting may increase in size from a first end of the first side to a second end of the first side. The device may comprise a second side with at least two male fittings, each configured to threadly interact with threads of a female fitting to create a waterproof seal. A diameter of each two male fitting may increase in size from a first end of the second side to a second end of the second side. The device may comprise a separator rim attached to the second end of the first side and to the second end of the second side.

A high pressure hose coupler has a tubular connector having internal threads at a distal end for engaging a hose around the hose's external surface. These teeth grip into the hose's outer soft layer, and the hose it typically steel-reinforced. An internal collet fits inside the hose, and engages the connector at a proximal end to be retained in place. A hollow insert has a distal end configured to be inserted within the collet to press the collet radially outwardly so that the hose wall is pressed between the connector and the collet. The insert proximal end is configured to engage the collet at threads on collet internal threads. The hose is gripped very tightly by action of the insert pressing against the tapered collet, in turn against the restraining force of the connector around the end of the hose.

A high pressure hose coupler has a tubular connector having internal threads at a distal end for engaging a hose around the hose's external surface. These teeth grip into the hose's outer soft layer, and the hose it typically steel-reinforced. An internal collet fits inside the hose, and engages the connector at a proximal end to be retained in place. A hollow insert has a distal end configured to be inserted within the collet to press the collet radially outwardly so that the hose wall is pressed between the connector and the collet. The insert proximal end is configured to engage the collet at threads on collet internal threads. The hose is gripped very tightly by action of the insert pressing against the tapered collet, in turn against the restraining force of the connector around the end of the hose.

A multi-lumen hose connector nipple and a multi-lumen hose equipped therewith. The multi-lumen hose connector nipple includes a nipple basic section through which a plurality of separate fluid conduits extend in each case between a first and a second nipple connector side, a plurality of hose lumen plug-in sockets integral with the nipple basic section, which sockets extend juxtaposed on the first nipple connector side with an intermediate hose lumen wall accommodation space left therebetween, wherein a socket interior space of each of the hose lumen plug-in sockets is assigned to a respective one of the fluid conduits and opens out axially, and a socket strutting structure within the socket interior space of at least one of the hose lumen plug-in sockets.

A multi-lumen hose connector nipple and a multi-lumen hose equipped therewith. The multi-lumen hose connector nipple includes a nipple basic section through which a plurality of separate fluid conduits extend in each case between a first and a second nipple connector side, a plurality of hose lumen plug-in sockets integral with the nipple basic section, which sockets extend juxtaposed on the first nipple connector side with an intermediate hose lumen wall accommodation space left therebetween, wherein a socket interior space of each of the hose lumen plug-in sockets is assigned to a respective one of the fluid conduits and opens out axially, and a socket strutting structure within the socket interior space of at least one of the hose lumen plug-in sockets.