Described is a fitting for coupling fluidic paths which facilitates secure and low leak rate fluid flow through a fluidic path junction such as a junction in a liquid chromatography system or other chemical analysis instrument. Fluid containing various mixtures of chemical samples can pass through the junction at high pressure with little or no trapped residue remaining in a volume at the connection. According to various embodiments, a face seal is achieved between two separate fluidic path features. In some embodiments, the sealing of the fluidic paths is aided by the use of a compliant polymer seal. The seal facilitates intimate contact between adjacent surfaces and significantly limits or prevents the entry of fluid under high pressure into an unswept volume. Thus the risk of carryover and its adverse effect on measurements is reduced or eliminated.

A joint for preventing a water pipe from twisting comprises a hanger screw sleeve, a disk-shaped oil seal, a gasket and a connecting pipe. The disk-shaped oil seal is sleeved on one end of the connecting pipe, and the water pipe is sleeved on the other end thereof. The gasket is disposed between the disk-shaped oil seal and the connecting pipe. The disk-shaped oil seal, the gasket and the connecting pipe are all arranged in the hanger screw sleeve. As the hanger screw sleeve screws into a water pipe base and presses onto the disk-shaped oil seal, the disk-shaped oil seal and the gasket also rotate together with the hanger screw sleeve. This prevents the water pipe connecting to the joint from twisting.

Disclosed is a fitting (1) for use with corrugated tubing (2) having a series of peaks (3) and valleys (4). The fitting (1) comprises a nut (5) having a passage (6) therethrough for receiving the tubing (2) and at least one retainer (7) arranged in the nut (5), wherein the retainer (7) has a retainer sealing surface (8) for placement in a valley (4) of the corrugated tubing (2). The fitting (1) further comprises a body (9) having a pointy annular body sealing edge (10) arranged so that the apex (11) of the body sealing edge (10) is pressed against the retainer sealing surface (8) when the nut (5) and the body (9) are forced toward each other. A method for connecting corrugated tubing (2) to a fitting (1) comprising a nut (5), a retainer (7) and a body (9) and use of a fitting (1) is also disclosed.

A kit for connecting to a processing container a device for feeding a liquid or semi-liquid food product, including at least: an internally hollow pipe having a first end and a second end, wherein at least one between the first and the second end includes an enlarged, external terminal portion; a receiving element provided with a hole for receiving at least the enlarged, external terminal portion at one end of the pipe and with an abutment for stopping the end of the pipe inside the hole; means for pushing and locking the enlarged, external terminal portion at the end inside the receiving hole in order to allow locking the enlarged, external terminal portion against the abutment.

A turbo-molecular pump comprises: a shaft to be rotatably driven by a motor; a pump rotor; multiple bolts penetrating the pump rotor from a pump suction port side to fasten the pump rotor to a pump suction port side end portion of the shaft; and a seal member configured to seal a clearance between fastening surfaces of the pump rotor and the shaft or a clearance between each bolt and the pump rotor.

A quick-connect plumbing device for exemplary use in connection of an appliance, such as a water heater, to supply line of a dwelling, among other uses. Preferably, the connection creates a dielectric coupling between the appliance and supply line to disconnect electrical communication between the supply line and appliance. The device typically includes a length of rigid conduit structured to form a sweat solder connection to a cooperating solderable plumbing element at a first end, and to form a threaded connection to a cooperating threaded plumbing element at an opposite second end, with a resilient seal element being carried at the second end. The threaded connection can be formed by an internally-threaded nut axially affixed to the conduit to permit nut rotation to axially compress the seal element between the conduit and the threaded plumbing element.

A resin-made pipe joint enhancing sealing property between a joint body and a sleeve. The joint body and the sleeve are produced by using a fluorine resin. A sealing portion which seals between the inner circumferential surface of an inserting portion of the sleeve and the outer circumferential surface of the inner cylinder portion is formed by press-inserting the inserting portion into a groove portion of the joint body. When, with respect to the inserting and groove portions, an insertion rate of the inserting portion to the groove portion is indicated by X, and a multiplying factor of the radial width of the inserting portion to the radial width of the groove portion is indicated by Y, the resin-made pipe joint has the insertion rate and multiplying factor which are within a range defined by following Expressions (1) and (2):
Y=0.218X+1.218(1)
and
Y=0.67X+1.67.(2)

A temporary piping system is disclosed for use in a high pressure fluidic system. The temporary piping system including a connection pin including a first sealing surface, a connection box including external threads and a second sealing surface for engaging the first sealing surface of the connection pin to create a fluidic seal, an outer sleeve including internal threads for threadingly engaging the external threads of the connection box to secure the box with respect to the inner pipe to maintain the fluidic seal, and a locking system for preventing the connection box from being separated from the connection pin.

A diesel exhaust fluid transfer circuit providing a fluid transfer connector for securely connecting a port fitting of a diesel exhaust fluid device to a diesel exhaust fluid hose. The fluid transfer connector comprises an attachment nut attachable to a port fitting of the diesel exhaust fluid device. The fluid transfer connector further comprises a hose adapter including a fluid conduit and an annular wiper seal coaxially aligned with the fluid conduit. With the attachment nut attached to the port fitting, the fluid conduit is slidable over the port fitting and connectable to the attachment nut, and the annular wiper seal wipes any residue on the port fitting as the fluid conduit is slid over the port fitting.

A pipe connector includes a connecting structure configured to secure a first section of hose, pipe, or tube to an adjacent second section of hose, pipe, or tube positioned adjacent to the first section at a joint between the first section and the second section. The connecting structure includes at least one segment of a thermally adaptive material. The at least segment is configured to undergo a shape change as a result of thermal cycling such the shape change causes the connecting structure to form a leak-free seal between the first section and the second section at the joint.