An air pipe device of an air compressor contains a connector of an air pipe configured to output fluid pressure so as to inflate airs and to feed sealant when the air compressor operates. The air pipe device contains a connection pipe, and the connection pipe includes an open segment defined on a first end thereof and configured to connect with the connector of the air pipe of the air compressor. In addition, the connection pipe includes a stop segment formed on a second end thereof, such that the connection pipe is configured to connect a twin tire with the connector of the air compressor so as to inflate airs and feed sealant.

Adapter for carbon dioxide tubes including a tube provided with an inner channel with hollow ends, having an end that has an annular shoulder with a flexible surface provided with outer ribs that fits into the connection area of a hose, which is, in turn, associated with the carbon dioxide tube, by overlapping and deformation, and the outer ribs of the tube fit into the ribs arranged in the inner channel of the annular shaped sleeve.

Adapter for carbon dioxide tubes including a tube provided with an inner channel with hollow ends, having an end that has an annular shoulder with a flexible surface provided with outer ribs that fits into the connection area of a hose, which is, in turn, associated with the carbon dioxide tube, by overlapping and deformation, and the outer ribs of the tube fit into the ribs arranged in the inner channel of the annular shaped sleeve.

Disclosed is a system and a method for reducing or eliminating lead and other harmful materials in water. The system is configured for fluid flow where the system includes: a semi-rigid pipe (SRP) disposed inside a first existing pipe; two coupling assemblies disposed over and sealingly coupled to the ends of the SRP. Each assembly includes: a coupling with a nipple configured to receive and be disposed inside the SRP; and a compression nut that includes an inner surface that tapers inward such that threading the compression nut onto the coupling presses the semi-rigid pipe against the nipple to form a fluid-tight seal.

Disclosed is a system and a method for reducing or eliminating lead and other harmful materials in water. The system is configured for fluid flow where the system includes: a semi-rigid pipe (SRP) disposed inside a first existing pipe; two coupling assemblies disposed over and sealingly coupled to the ends of the SRP. Each assembly includes: a coupling with a nipple configured to receive and be disposed inside the SRP; and a compression nut that includes an inner surface that tapers inward such that threading the compression nut onto the coupling presses the semi-rigid pipe against the nipple to form a fluid-tight seal.

Safety conduit system includes a pair of couplings, each including an elongate fitting or housing having barbs at one end and spaced apart teeth at an opposite end. A conduit made of a thermoplastic hose, and stainless steel reinforcement around the hose is attached at each end to the barbed end of a respective coupling. A thread is optionally provided on an outer surface of the housing inward of the barbs so that ferrules on the conduit and having inner threads can threadingly engage with the threads on the couplings and enable the safety conduit system to maintain connection between the conduit and couplings at relatively high fluid flow pressure through the safety conduit system, such as around 40,000 psi.

Safety conduit system includes a pair of couplings, each including an elongate fitting or housing having barbs at one end and spaced apart teeth at an opposite end. A conduit made of a thermoplastic hose, and stainless steel reinforcement around the hose is attached at each end to the barbed end of a respective coupling. A thread is optionally provided on an outer surface of the housing inward of the barbs so that ferrules on the conduit and having inner threads can threadingly engage with the threads on the couplings and enable the safety conduit system to maintain connection between the conduit and couplings at relatively high fluid flow pressure through the safety conduit system, such as around 40,000 psi.

A wing nut includes a body having a sidewall that surrounds a central opening. The central opening is threaded along a threaded portion having a threaded length extending from the back end towards the front end of the body. At least two wings are integrated with the sidewall and extend away from the sidewall in a radial direction relative to the centerline. A rib extend peripherally around the sidewall in a radially outward direction such that a wall thickness of the sidewall increases to a maximum value moving along the centerline away from the rear end, and decreases along the centerline moving towards the front end from the maximum value.

A wing nut includes a body having a sidewall that surrounds a central opening. The central opening is threaded along a threaded portion having a threaded length extending from the back end towards the front end of the body. At least two wings are integrated with the sidewall and extend away from the sidewall in a radial direction relative to the centerline. A rib extend peripherally around the sidewall in a radially outward direction such that a wall thickness of the sidewall increases to a maximum value moving along the centerline away from the rear end, and decreases along the centerline moving towards the front end from the maximum value.

Hose has a body and a mouthpiece connected with the body. The mouthpiece is slidably placed against the body and is mounted at the end of the hose and includes a thickening. The ending has a circumferential stop placed in the axis of the mouthpiece. The stop has on its circumference a touch surface which is oriented inside, against the thickening on the mouthpiece. The mouthpiece is sealed by sealing ring against the body. The ring is placed in the sealing zone, or the mouthpiece is connected with the body by a flexible bellow. During the movement of the mouthpiece outside the touch surface and the outer surface of the hose in the zone with the thickening draw closer and the hose is held on the mouthpiece by the under pressure between the surface of the stop and the thickening.