Abstract: A pig handling device has a housing, a cavity found in the housing in which a pig can be received, a connection by means of which the cavity is connectable to a processing system, the connection suitable for allowing the pig to pass through, and a handling element that is arranged in the cavity, influences the mobility of the pig in the cavity, and has a base element and a functional element. The base element has a first surface, and the functional element is connected to the base element in the cavity and has a second surface. The arrangement improves cleanability in that the handling element has a concavely curved transition surface arranged between the first surface and the second surface and having a core curvature region, and in that the base element and the functional element are bonded to one another outside of the core curvature region.

Abstract: A double-seat valve has a seat-cleaning function and ensures that the seat-cleaning flow is conducted into and out of the leakage hollow space with as little turbulence as possible. The valve reliably prevents a pressure-increasing direct action upon the seat regions, even in the event that the cross-sectional area of the drain bore is smaller than that of the largest pipeline that can be connected to the valve. This is achieved in that a region of extension of the deflection surface that faces away from the radially outer end of the deflection surface delimits the remaining region of the opening in its entirety and opens out from the second closing element at an end-face and radially inner end of the second closing element, facing the first closing element.

Abstract: The invention relates to an actuating device for a rotatable closure part of a valve, in particular a pneumatically or hydraulically actuatable rotary drive for a disk or throttle valve, with a housing, in which a drive piston that is sealed from a cylindrical housing casing is arranged and is suppliable on one side with a pressurizing medium, which preferably has a tubular piston skirt, with a drive shaft, which is guided on one side out of the housing and drives in a rotating manner the closure part indirectly or directly, wherein the drive piston executes either an axial shift movement against the effect of at least one return spring in the case of a one-sided supply with the pressurizing medium or a back and forth shift movement in the case of an alternating supply with a pressurizing medium, wherein the piston skirt experiences an axially oriented guidance in the housing via at least one axial groove formed in it, into which a straight-line guide cam permanently connected with the housing engages, and wh

Abstract: A method for cleaning the seat of a double seat valve and the double set valve has a deflection surface bordering the remaining area of a recess not delimiting a circumferential wall and opens out from the latter at a front and radially insise end of a second closing member facing a first closing member.

Abstract: A double set valve capable of seat cleaning has a drive and control unit integrated together. The drive switches the valve, and includes two closing elements moveable independently of each other and enclose a leakage cavity.

Abstract: A device for the piping of process systems in the food and beverage industry in that: the respective valve distributor tree (rvdt) opens immediately into the lower tank bottom of a respectively associated tank of the process system, and/or the rvdt is connected via an associated pipe connection to an associated process aggregate or to the lower tank bottom of the process apparatus, and the pipe connection opens out into the tank-side or process-aggregate-side end of the valve distributor tree (vdt); a stirring device (16) which is operative in the entire interior space of the hollow structure is disposed in the vdt; and/or the vdt with the entire interior space of the hollow structure is part of a circulation line which extends over the tank or the process aggregate; and/or the vdt can be recuperatively acted upon by a heat transfer medium (W).

Abstract: The invention relates to a seat cleaning-capable double-seat valve (1) with two serially arranged closing elements (3, 4), moveable relative to each other and designed as slide pistons, which border both in the closed and open position of the double seat valve (1) a leakage cavity (9), which is connected with the surroundings of the double-seat valve (1) via a tubular shaft (4b/4c) arranged on a low-lying (with respect to a vertical normal position of the double-seat valve (1)), second closing element (4), in which a drainage hole (4d) is arranged. The second, independently driven closing element (4) is thereby designed larger than the first, independently driven closing element (3) so that, as a result, the double-seat valve (1) opens downward and the drainage of the leakage cavity (9) also takes place downward.

Abstract: A piping system for food and beverage process plants connecting a tank and process assembly to a pipe system via double seat valves mix-proof in the seat including valve distributor trees and the double seat has two serially disposed closing members with open and closed positions, the closing members delimiting a leakage cavity with a connection path to the surroundings of the double seat valve. A first closing member comes in sealing contact at a second closing member and transfers the second closing member into a sealed position. The second closing member having a hollow rod and a seat seal.

Abstract: The invention relates to a device for connecting a valve housing (2; 2.1; 2.2; 2.3; 2.4) to an actuator (3) in a process valve acting as a lift valve (1; 1.1; 1.2; 1.3; 1.4). The aim of the invention is to design a device for connecting a valve housing to an actuator in a process valve of the type in question that acts as a lift valve, is shorter and less expensive than all known devices of said type, is as safe as possible when opening, and has a very simple design. Said aim is achieved by mounting the lantern-type housing (3.1) on the valve housing (2; 2.1; 2.2; 2.3, 2.4) by means of a bayonet joint (2f, 2g/3.1d, 3.1e) or a bayonet-type joint.

Abstract: The invention relates to a lift valve (1; 1.1; 1.2; 1.3), particularly for process technology. The aim of the invention is to design a process valve of the type in question which acts as a lift valve, has a uniform (monolithic or multi-piece) closing part or member, is altogether shorter than all previously known, comparable valves, has a very simple design, and can be used for various embodiments such as check valves, tank bottom valves, or reversing valves. Said aim is achieved by the fact that the closing part (4; 4.1) opens towards the actuator (3; 3*) while the ends of the driving spring (7; 7.1, 7.2) directly or indirectly rest against the actuation rod (4a/4b) and a cover part (3b), respectively, said cover part (3b) delimiting the driving housing (3a) on the side of the driving piston (5; 5*) that faces away from the closing part (4; 4.1).

Abstract: A device for driving a double seat valve with two closing elements arranged in series and displaceable with respect to each other. A sleeve-shaped fourth drive piston pressurized by pressure medium, sealingly embraces a second drive piston on the circumference and can engage a catching connection in the direction of a first drive piston, wherein a second drive piston is adapted to be axially displaceable in a limited manner in both directions with respect to the first drive piston and in each case against the force of a second spring.

Abstract: The invention relates to a double-seat valve including closing elements (3,4) which can be transferred independently of one another by a respective partial lift gap-wide into a seat cleaning position for purposes of flushing their coaxial seat surfaces (2a, 2b), the second closing element (4) by a second partial lift (T2) which acts in the same direction as the opening motion and the first closing element (3) by a first partial lift (T1) which acts in the direction opposite the opening motion travelling into its respective seat cleaning position. The second closing element (4) in its closed position has a stop face (4f) forming a second circumferential edge (U2). A deflection surface (4d) discharges in a front face (4e) of a recess (4b) which is oriented essentially perpendicular to the longitudinal axis of the second closing element (4). The deflection surface (4d) has a contour (K) which runs without bends.

Abstract: The invention relates to a double seat valve capable of cleaning the seat and having a cleaning device for a housing penetration critical for cleaning, According to the invention, a double seat valve of generic type ensures cleaning of the housing penetration of the pipe shaft or the pipe shaft expanded into a pressure compensation piston of the independently driven first closing element, starting from the valve housing part to an axial extension length of at least the entire opening stroke of the double seat valve, and the related relevant prior art is thus improved. This is achieved according to the invention in that, when a first closing element (3) is moved downward by the first partial stroke (T1), a freely penetrable ring gap (S21) is formed between an outer surface (K) of the pipe shaft (3b/3c) and a first rod seal (21) disposed in the first valve housing part (1a).

Abstract: A double-seat valve having a seat-cleaning function, wherein the double-seat valve opens downward, and the two closing elements can be moved independently of each other by a partial lift in each case gap-wide into a seat cleaning position for the purpose of cleaning their seat such that the dependently driven second closing element is pushed into its respective seat cleaning position by a second partial lift in the same direction of the opening movement, and the independently driven first closing element is pushed into its respective seat cleaning position by a first partial lift in the direction counter to the opening lift.

Abstract: The invention relates to a double seat valve which is capable of cleaning the seat. The double seat valve includes a closing element (4), when in its closed position rests with a stop surface (4e), arranged on a boundary surface thereof radially adjacent on an inner side to a seal (7), on a second seating surface (2b) and directly adjacent to a first seating surface (2a, 2g) with a central recess (4d) provided in a front face of the closing element (4) facing a leakage cavity (5). The closing element (4) further includes a deflector surface (4b) opening in a front face (4c), wherein the deflector surface (4b) and the slop surface (4e) form a circumferential edge (U2) directly adjacent to a first end section (2g) of the first seating surface (2a) in the closed position of the closing element (4).

Abstract: A device for the piping of process systems in the food and beverage industry. in that: the respective valve distributor tree (rvdt) opens immediately into the lower tank bottom of a respectively associated tank of the process system, and/or the rvdt is connected via an associated pipe connection to an associated process aggregate or to the lower tank bottom of the process apparatus, and the pipe connection opens out into the tank-side or process-aggregate-side end of the valve distributor tree (vdt); a stirring device (16) which is operative in the entire interior space of the hollow structure is disposed in the vdt; and/or the vdt with the entire interior space of the hollow structure is part of a circulation line which extends over the tank or the process aggregate; and/or the vdt can be recuperatively acted upon by a heat transfer medium (W).

Abstract: The invention relates to a device (100) for driving a double seat valve (1) having two closing members (3,4) disposed in series and displaceable relative to each other and preventing, in the closed position of the double seat valve (1), the flow of fluids from a valve housing part (1 a; 1 b) into another (1 b; 1 a) through a connecting opening connecting said valve housing parts of a valve housing (10) with each other, and, even in the open position, bounding a leakage cavity (9) of the double seat valve (1) connected to the vicinity of the double seat valve (1).

Abstract: The invention relates to a piping system for process plants of the food and beverage industry, that connects a tank and/or a process assembly to a pipe system via double seat valves formed mix-proof in the seat area, wherein a valve distributor tree opens directly into the lower tank bottom of a respectively assigned tank of the process plant and/or the valve distributor tree is connected via an assigned pipe connection to an assigned process assembly or tank of the process plant, and the pipe connection opens into the tank-side end or process assembly-side end of the valve distributor tree, in which according to the invention the second closing member is designed as a hollow rod that has at its end facing the first closing member a second seat seal that acts together with a second seat abutting at a cylindrical first seat; that the first closing member, designed as a valve piston, has a radially acting first seat seal that in the closed position of the valve is sealingly received in the first seat, forming t

Abstract: The invention relates to a seat cleaning-capable double-seat valve (1) with two serially arranged closing elements (3, 4), moveable relative to each other and designed as slide pistons, which prevent in the closed position of the double-seat valve (1) the overflow of fluids from one valve housing part (1a; 1b) into another (1b; 1a) through a connecting opening (2c) connecting the valve housing parts (1a, 1b) with each other and which border both in the closed and open position of the double seat valve (1) a leakage cavity (9), which is connected with the surroundings of the double-seat valve (1) via a tubular shaft (4b/4c) arranged on a low-lying (with respect to a vertical normal position of the double-seat valve (1)), second closing element (4), in which a drainage hole (4d) is arranged. An axially relocatable, cylindrical annular slide part (5) is provided.

Abstract: The invention relates to a double seat valve with cleanable seats, the valve including first and second closing elements (3, 4) and a leakage cavity (5). An intermediate seal (8) seals the closing elements (3, 4) in their opening and closing movements and in the open position against each other, is arranged in the second closing element (4). The second closing element (4) abuts in its closed position at a transition area (2e, 2e*) with a stop face (4e) arranged at a front face of a cylindrical lug (4*) and that directly adjacent to a first seat (2a, 2g), a central recess (4d) is provided in a front face of a second cylindrical lug (4*).