Abstract: A machine for filling packaging containers with a flowable product comprises a control valve in the form of a plug valve having a body defining a bore forming a frusto-conical valve seat, a plug having a complimentary frusto-conical surface, and a valve chamber for pressurized fluid formed at the wider end of the plug. The chamber communicates with the bore. The plug is axially displaceable between a first position, in which the frusto-conical surface seals against the valve seat and in which it is rotatable to control flow through the valve, and a second position, in which it is withdrawn into the chamber to provide clearance between the mating surfaces of the plug and the seat but retaining clearance between its wider end and the opposite surface of the chamber so that all surfaces of the plug are exposed for cleaning and sterilization.

Abstract: A precoat filter element for a precoat filter unit comprises a flow distributor and flow straightener. The flow distributor surrounds a filter septum and has openings through which liquid may flow. The proportion between the area of openings and the area of a wall of the flow distributor may vary along the length of the septum to distribute flow over the length of the filter septum in a predetermined manner. A flow straightener is provided at the base of the septum to reduce turbulence during precoat and filtration operations, and to reduce the occurrence of large flocs in precoat slurries during coating operations.

Abstract: A filter segment disc of a segment filter comprises a support and drainage plate with slots radiating from the filter hub toward the filter edge. The slots are preferably of arcuate plan form and configured to provide a substantially uniform fluid flow over the filtering medium of the filter segment, reduce residence time of filtrate in the filter, eliminate dead spots in the flow, and facilitate cleaning of permanent filters. A filter support spacer may be provided adjacent the filtering surface to aid in support and positive spacing of the disc in a filter stack of which the disc may be an element.

Abstract: The disclosure described a pressurized fluid container comprising a fluid vessel, a sheath arrangement which may be fitted around the fluid vessel, and a mechanism for tightening the sheath around the fluid vessel. The disclosure also describes a filter assembly comprising a filter cartridge and sheath arrangement for supporting the filter cartridge against the pressure of a fluid flowing through the filter cartridge. The filter cartridge comprises an impervious shell, two end caps, and a porous filter unit. The shell has first and second ends, and the first and second end caps are respectively mounted at or near the first and second ends of the shell. At least one of the end caps may be slid along the shell and engages the shell to form a seal. The porous filter unit is positioned within the shell and has a first surface and a second surface.

Abstract: A container for foodstuffs and beverages comprising a vessel having a mouth surrounded by a rim presenting an upper surface of plastics material, and a lid, comprising a diaphragm secured by an endless weld to the upper surface and covering the mouth. The diaphragm has a perforation consisting of at least one through hole and a peel strip sealingly but peelably secured over the perforation. The peel strip has a pull tab formed by a portion of the peel strip folded back on itself and situated outside the perforation. Further, the peel strip has a transverse cut across part of its width at the junction of the pull tab with the remainder of the peel strip on the side of the pull tab remote from the perforation.

Abstract: A coalescing filter capable of removing liquid aerosols (such as water and oil) from gaseous streams with high efficiency. The filter comprises three layers, (a) an intermediate fibrous layer having a pore size of from about 1.25(t) to about 2(t), where t is the dynamic film thickness of the aerosol in the gaseous stream, the fibers of the intermediate fibrous layer having diameters ranging from about 0.1 to about 20 micrometers, (b) a fibrous layer upstream of the intermediate layer having a pore size greater than the intermediate layer, and (c) a downstream fibrous layer having a pore size greater than the intermediate layer and wherein the critical surface energy of each layer of the filter is less than the surface tension of the liquid making up the aerosol.

Abstract: A method of making a succession of food or beverage containers each comprising a vessel having a mouth surrounded by a rim presenting an upper surface of plastics material. The method comprises filling each vessel in turn and feeding over the vessel a continuous composite web of lidding material produced by forming spaced apart perforations, each comprising at least one through hole, in a continuous first web of diaphragm material having a plastics surface weldable to the vessel rim. The method also comprises forming spaced apart pull tabs in a continuous second web of peel strip material by folding each of a succession of portions of the second web against itself to form each pull tab and subsequently applying and peelably securing the second web which is narrower than the first web to the first web so as to obturate the perforations such that one pull tab is situated adjacent each perforation and remains secured to the second web only at a junction on its one end.

Abstract: The disclosure describes a sorbing apparatus including at least one chamber having first and second ports and defining a fluid flow path between the first and second ports. The chamber includes a bed of sorbent particles which are bound to one another by a polymeric binding agent that prevents movement of the particles with respect to one another. The apparatus further comprises a fluid controller which alternately directs a fluid having a first concentration of a component through the bed of sorbent particles wherein the bed sorbs the component from the fluid and directs a purging fluid through the bed of sorbent particles wherein the bed is regenerated.

Abstract: Processes for the high efficiency removal liquid aerosols from gaseous streams and coalescing filters for carrying out such processes are provided. The filter comprises a porous medium having a critical surface energy less than the surface tension of the liquid to be removed and the dynamic film thickness of the liquid to be removed is from about 0.5 D to about 0.8 D, where D is the mean pore diameter of the porous medium, whereby, in operation, the correlation of the pore size with the dynamic film thickness of the liquid coupled with the relationship between the surface tension of the liquid and the critical surface energy of the porous medium provide high efficiency removal of the liquid aerosol with a minimum resistance of flow. The effluent typically contains 0.05 ppm or less, by weight, of aerosol.

Abstract: The disclosure describes a filter cartridge for removing particulates from a destructive fluid such as a hot acid or solvent. The filter cartridge comprises a cylindrical filter arrangement having a generally annular cross section and including a cylindrical, microporous fluoropolymeric filter for removing the particulate contaminants as the corrosive fluid flows through the filter. The filter arrangement also includes a cylindrical fluoropolymeric structure coaxially disposed adjacent the filter for supporting the filter. The filter cartridge further includes first and second impervious fluoropolymeric end caps concentrically disposed adjacent the first and second ends, respectively, of the filter arrangement. The first end cap includes a central aperture communicating with the center of the filter arrangement.

Abstract: A weight monitoring apparatus which is suitable for use in a computerized control system and which provides a visual net relative weight indication, as well as an alarm, indicative that an alarm level weight is being approached by the article being weighed.

Abstract: A multiple cartridge filter assembly is provided with a removable filter array to facilitate the rapid replacement of an entire array having spent cartridges with another identical array having fresh cartridges, after which the spent cartridges of the removed array may be replaced. The removable filter array includes a separation plate from which the filter cartridges hang suspended in sealing engagement therewith and a dual position support platform connected to the separation plate and located beneath the lower blind ends of the cartridges. The support platform maintains the cartridges sealingly engaged with the separation plate when the removable array is in its working condition but automatically drops down relative to the separation plate when the array is removed to accommodate the replacement of the cartridges.

Abstract: Coating compositions especially useful as primers for metal substrates consist essentially of polyepoxide resin, acrylic resin and fluorocarbon resin.

Abstract: An improved process for the liquefaction of solid carbonaceous materials wherein a solvent or diluent derived from the solid carbonaceous material being liquefied is used to form a slurry of the solid carbonaceous material and wherein the solvent or diluent comprises from about 65 to about 85 wt. % hydroaromatic components. The solvent is prepared by first separating a solvent or diluent distillate fraction from the liquefaction product, subjecting this distillate fraction to hydrogenation and then extracting the naphthenic components from the hydrogenated product. The extracted naphthenic components are then dehydrogenated and hydrotreated to produce additional hydroaromatic components. These components are combined with the solvent or diluent distillate fraction. The solvent may also contain hydroaromatic constituents prepared by extracting naphthenic components from a heavy naphtha, dehydrogenating the same and then hydrotreating the dehydrogenated product.

Abstract: An air purification system and process are provided that are capable of ensuring oil-free moisture-free and particulate- and microbial contaminant-free pharmaceutical quality air, the air purification system comprising, in combination, and in the sequence indicated:(1) an oil and water coalescer filter;(2) an adsorbent or desiccant dryer;(3) an oil vapor adsorber;(4) an after-filter; and(5) a bacterial-retentive final filter.