An outlet cover with a first attachment pin fixed with respect to the outlet cover and having a radially extendable portion deformable upon by a radial force exerted from a hollow inside of the first attachment pin. The radially deformable portion prevents the first attachment pin from being withdrawn from an associated attachment hole, while allowing the first attachment pin to be compressed further into the associated attachment hole, thereby preventing a securing element from stripping any retaining surface, and thus increasing the longevity of the outlet cover. An associated filter plate, filter plate assembly and a filter are also concerned.

An assembly for a filter press can include a plate body having spaced first and second sides defining an axial direction, and a fluid channel extending through the plate body in the axial direction between the first and second sides. A fastener can be provided in the assembly with a first end extending from the first side of the plate body.

A filter plate assembly which is resistant to both wear and deformation caused by creeping, while facilitating maintenance thereof. A filtrate vat is provided that is formed on, and integral with the filter plate, in addition to a separate, replaceable vat liner. In this way, a rigid structure of the filtrate vat capable of resisting deformation may be achieved, while the vat liner separates the filtrate from the filtrate vat and the associated filter plate, providing wear resistance and facilitating maintenance. The present disclosure further concerns the filter plate and the filtrate vat.

An outlet piece assembly for a horizontal plate and frame-type filter, such as tower press. The disclosure is based on the idea of providing the outlet piece assembly as having a base removably attachable to a filter press (e.g., to the filter plate or plate frame thereof), and a lid removably fixed to the base, such that an internal conduit of the outlet piece assembly running between a vat end and a discharge end is formed between the base and the lid. This enables a part of an associated filtrate vat component, such as the vat liner, to be received between the base and the lid, thereby ensuring secure sealing between these components.

In a preparative separation-purification system for passing a solution containing a target component through a trap column to capture the target component in the column, and for subsequently passing an eluting solvent through the column to elute the captured component and collect it in a container, a dilution passage is merged with a collection passage for sending an eluate from the outlet end of the trap column to the collection container, and a diluting liquid is intermittently introduced through the dilution passage into the collection passage. The diluting liquid lowers the concentration of the target component in the eluate and impedes the deposition of the target component. Thus, clogging of the passage due to the deposition of the target component eluted from the trap column is effectively prevented.

A filter plate for a horizontal plate and frame-type filter, such as a tower press. A filtrate vat formed on, and integral with a filter plate is provided along with an outlet opening as a gap on a border delimiting the vat for providing drainage route, and a recessed portion provided at the outlet opening. A rigid structure of the filtrate vat that is capable of resisting deformation may be achieved, and contamination from slurry between the filter plate and a possible vat liner or coating is avoided.

A filter plate for a horizontal plate and frame-type filter, such as a tower press. A filtrate vat formed on, and integral with a filter plate is provided along with an outlet opening as a gap on a border delimiting the vat for providing drainage route, and a recessed portion provided at the outlet opening. A rigid structure of the filtrate vat that is capable of resisting deformation may be achieved, and contamination from slurry between the filter plate and a possible vat liner or coating is avoided.

A flow cap may include an outer ring, an inner ring, an inlet portion, and an outlet portion. The inlet portion may include first portions of the outer and inner rings, and a plurality of arms extending between the first portions of the outer and inner rings, wherein the arms at least partially define an inlet aperture configured to provide flow communication between an inlet port of a filter base and an interior portion of a filter element. The outlet portion may include second portions of the outer and inner rings, and a plate including an outlet aperture providing flow communication between an outlet port of the filter base and an exterior portion of the filter element. The outlet portion may also include a wall, wherein the plate and the wall prevent flow communication between fluid entering the inlet portion and fluid entering the outlet portion.

A recess plate designed for use in a filter device for filtering a suspension includes a stationary head piece and a movable end piece, and a pack including copies of the recess plate, having a filter chamber inside the pack, adjoining the recess plate, having a first pipe for filling the suspension into the filter chamber, having a filter cloth for collecting a solid content out of the suspension, and having a second pipe for discharging a liquid fraction of the suspension out of the filter chamber as a filtrate, wherein the filter device may be closed before filtering by forcing the end piece in direction of the head piece, and opened after filtering by releasing the end piece, and moving the end piece away from the head piece for removing the filter cake from the filter cloth.

Approaches to providing z-filter media constructions are provided. Preferred media, filter constructions having such media, and filter systems using such filter constructions are provided. Also, preferred methods of forming filter constructions are provided.