An isolation valve unit with a fusion outlet including a valve body comprised of a metal, such as brass, and having at least two ports, at least one of the ports including an overmolded thermoplastic end surrounding and enclosing the port from which the fusion outlet extends. In one embodiment, the thermoplastic end is composed of a PP-RCT material and is securely formed over the port by way of an over molding technique. The valve unit further includes a ball valve accommodated within the valve body and a handle for actuating the ball valve. The isolation valve unit is configured to couple to a larger polymeric pipe and to control the flow of fluids in a plumbing system via actuation of the ball valve.

A tube assembly for a gas turbine engine includes a rigid tube having first and second ends for connection to first port and second ports on the gas turbine engine. The first and second ports have different orientations providing for different installation vectors. The tube assembly further includes a tube adapter adjustably connected to the second port and a coupling, which, is, in turn, adjustably mounted to a distal end of the tube adapter for connection with the second end of the tube.

A refrigerant pipe of a refrigeration apparatus includes: a first pipe, made of stainless steel, through which a refrigerant flows; a joint pipe, made of a material different from stainless steel, disposed on an outer peripheral surface of the first pipe; and a second pipe, having a diameter smaller than a diameter of the first pipe, connected to the outer peripheral surface of the first pipe via the joint pipe. A surface of the second pipe at which the second pipe is connected to the joint pipe is made of a material identical to the material of the joint pipe.

A sensor arrangement (1) is described comprising a sensor housing (2) and a mounting connector (3). Such a sensor arrangement should be soldered to a refrigeration system without being sensitive for vibrations during operation of the system and without deteriorating a sensor arranged in the housing. To this end the mounting connector (3) is at least partly made of a bi-metal material with an inner layer (10) of steel and an outer layer (11) of copper.

Herein a tubular element (2) is disclosed. The tubular element comprises a first tubular portion (4) comprising a first metal or alloy and a second tubular portion (6) comprising a second metal or alloy. At least a portion of an interface (9) between the first and second tubular portions (4, 6) extends within a fixed diameter range along a longitudinal direction (L) of the tubular element. The second tubular portion (6) comprises a first end portion (8) arranged around the first tubular portion (4). The second tubular portion (6) comprises a sealing surface (10) extending circumferentially around the second tubular portion (6) at the first end portion (8).

Herein a tubular element (2) is disclosed. The tubular element comprises a first tubular portion (4) comprising a first metal or alloy and a second tubular portion (6) comprising a second metal or alloy. At least a portion of an interface (9) between the first and second tubular portions (4, 6) extends within a fixed diameter range along a longitudinal direction (L) of the tubular element. The second tubular portion (6) comprises a first end portion (8) arranged around the first tubular portion (4). The second tubular portion (6) comprises a sealing surface (10) extending circumferentially around the second tubular portion (6) at the first end portion (8).

A brazing process includes placing an accessory on a tube and interposing a brazing material between a bearing surface of the tube and a complementary bearing surface of the accessory. The brazing material is melted. The bearing surface and the complementary bearing surface together define a chamber having a converging portion whose height perpendicular to the bearing surface decreases radially away from the orifice. The converging portion of the chamber has a radial width greater than one times the thickness of the tube, so that the brazing material is distributed by capillary action in the chamber, and binds the bearing surface and the complementary bearing surface to one another.

A contoured branch fitting for reducing stress in a header pipe caused by acoustic induced vibration that includes a maximum width, a maximum length, a thickness that is greater along the maximum length and a constant radius between the branch connection and the header connection.

A contoured branch fitting for reducing stress in a header pipe caused by acoustic induced vibration that includes a maximum width, a maximum length, a thickness that is greater along the maximum length and a constant radius between the branch connection and the header connection.

A tubular scoop that may be utilized with various assemblies for sampling fluid in a pipeline. The scoop has a bend with a bend radius that is from two to four times the diameter of the scoop. The scoop defines a scoop face that is parallel to an axis of the tubular of the scoop. The scoop is mountable with a threaded connection that seals around the tubular. An additional seal with a compression nut allows orientation of the scoop within the pipeline whereupon the scoop orientation is fixed by tightening the compression nut.