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 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 tubing or fitting assembly has an inner tube layer, an outer tube layer, a sleeve, a tip portion, and can have a nut. Each of the nut, sleeve, inner and outer tubing layers, and tip portion have a passageway therethrough, with at least the passageways in the sleeve, tip portion, outer tube layer, and nut adapted to allow the inner tube layer to pass therethrough or extend over the inner layer. The tip portion can be molded over an end portion of the inner tube layer and also over a portion of the sleeve. The sleeve may include a retention feature in the form of a lip which extends into the tip portion, and also a narrower portion so that the tip portion and sleeve remain coupled together. The inner and outer tubing layers can also be retained by an interference fit. The ends of the tip portion and inner layer together define a substantially flat surface which can form a seal in a flat-bottomed port of a component such as may be found in any one of a number of components in an analytical instrument system, including for example a liquid chromatography system. The nut, tube, ferrule, and transfer tube or liner tube may comprise biocompatible materials. In addition, the nut may have a slot, such as a slot adapted to allow the tube and the nut to be easily and quickly separated or to allow a portion of the tube to be easily and quickly inserted in the nut.

Described is a mobile phase fitting having reduced corrosion and erosion. The fitting includes a coupling body, compression screw, compression member and gasket. The coupling body has a threaded bore at one end, a tapered cavity, a narrow bore and a fluid channel. The compression screw has an axial bore to receive a tube and a threaded outer surface in engagement with the threaded bore of the coupling body. The compression member is disposed in the tapered cavity and has an axial opening to pass the tube and a tapered surface to engage a surface of the tapered cavity. The gasket is disposed in the narrow bore and has one surface in contact with the first internal surface and has a parallel surface to receive an end face of the tube. Mobile phase flows along a path that includes the tube, an opening in the gasket and the fluid channel.

A quick-access hinged lid assembly for flanged riser, having two-part clamp, having an inner face shaped to conform to the surface flanged riser, first clamp ring and second clamp ring are connected by a clamp hinge, a lid having an exterior surface and an interior sealing surface to abut the flanged riser exterior surface, wherein the interior sealing surface includes annular groove, gasket or o-ring positioned therein groove to seal flanged riser exterior surface and interior sealing surface, a lid hinge configured between clamp and lid, lid hinge having a swing bolt slot and pin bolt to provide adjustment of the lid to enable the lid to mate flat with flanged riser, swing bolts positioned on the perimeter and pivotable from the clamp ring with hand operable fasteners to press gasket between interior sealing surface of the lid and flanged riser exterior surface in a closed position.

A manifold assembly has a manifold and can be located between a block and a plate, and serve as a stator for a valve or other component. The manifold, block or plate can have a plurality of ports either integral thereto or removably connected thereto, with the ports adapted to receive and sealingly engage with a tube having an inner tube layer, an outer tube layer, a sleeve, a tip portion, and a nut. Each of the nut, sleeve, inner and outer tubing layers, and tip portion have a passageway therethrough, with at least the passageways in the sleeve, tip portion, outer tube layer, and nut adapted to allow the inner tube layer to pass therethrough or extend over the inner layer. The ends of the tip portion and inner layer together can define a substantially flat surface which can form a seal in a flat-bottomed port of the manifold, block, or plate, which can be used in a component in an analytical instrument system, including for example a liquid chromatography system. The nut, tube, ferrule, and transfer tube or liner tube may comprise biocompatible materials. In addition, the nut may have a slot, such as a slot adapted to allow the tube and the nut to be easily and quickly separated or to allow a portion of the tube to be easily and quickly inserted in the nut.

A tubing or fitting assembly has an inner tube layer, an outer tube layer, a sleeve, a tip portion, and can have a nut. Each of the nut, sleeve, inner and outer tubing layers, and tip portion have a passageway therethrough, with at least the passageways in the sleeve, tip portion, outer tube layer, and nut adapted to allow the inner tube layer to pass therethrough or extend over the inner layer. The tip portion can be molded over an end portion of the inner tube layer and also over a portion of the sleeve. The sleeve may include a retention feature in the form of a lip which extends into the tip portion, and also a narrower portion so that the tip portion and sleeve remain coupled together. The inner and outer tubing layers can also be retained by an interference fit. The ends of the tip portion and inner layer together define a substantially flat surface which can form a seal in a flat-bottomed port of a component such as may be found in any one of a number of components in an analytical instrument system, including for example a liquid chromatography system. The nut, tube, ferrule, and transfer tube or liner tube may comprise biocompatible materials. In addition, the nut may have a slot, such as a slot adapted to allow the tube and the nut to be easily and quickly separated or to allow a portion of the tube to be easily and quickly inserted in the nut.

Disclosed is a union which is capable of self-sealing without a need for additional piping materials and sealing means, as well as being capable of forming a pipe conduit through a simple installation. The union includes a main pipe which has one end that is connected to an adapter installed to introduce or discharge a fluid into equipment to form a pipe conduit; a joint which is able to be idle and provided at one end of the main pipe, and has a screw thread corresponding to a screw thread formed at an end of the adapter to connect one end of the main pipe to the end of the adapter through the screw thread; and a stopper which is inserted and fixed in a stopper groove formed at one end of the main pipe to prevent the joint from being detached from the main pipe.

A fluidic coupling includes a compression screw having an axial bore, a threaded portion configured to engage a threaded bore of a coupling body, and a drive surface, a tube extending through the axial bore of the compression screw, the tube including a body and a fluidic channel extending through the body to a sealing end, the body including a pocket formed at the sealing end having a depth, a collet secured to an outer surface of the tube and having a first end configured to receive the drive surface of the compression screw, and a polymer seal having a channel to pass a fluid, the polymer seal including a flange portion and an insertion portion.

A method of manufacturing a fitting for fluidic coupling in a chromatography system includes welding a tube sleeve and an inner tube at an endface of each of the tube sleeve and the inner tube to create a tube assembly having a welded tube assembly endface and polishing the welded tube assembly endface.