It is disclosed a valve (1) for a reciprocating compressor, comprising a valve body (2) which comprises a seat (3) and a guard (4), the seat (3) and the guard (4) developing substantially parallel to a valve plane (A). The valve (1) also comprises a hydraulic apparatus (7) with pistons (9) and a hydraulic circuit (8) provided with a first portion (8a) which is made by additive manufacturing technology according to digital 3D design data.

A reciprocating gas compressor valve having a plurality of clusters of kidney shaped holes positioned along a common circular or annular locus in the main body and a sealing element with a top portion, a bottom portion and a tubular section. The tubular section is integrally connected to the top portion and bottom portion. In an open position, a flow pathway is provided through the clusters of kidney shaped holes and the tubular section and the bottom profile abuts a stop surface of the valve. In a closed position, the top profile abuts the seat for sealing gas flow within the valve.

An automatic plate valve having a valve seat, a valve guard, a longitudinal axis (L) and a valve element arranged between the valve seat and the valve guard and movable along the longitudinal axis (L) The valve seat includes an end face having with valve seat openings oriented towards the valve guard, and a plurality of passages, which have a fluid-conducting connection to the valve seat openings. The valve element includes sealing element interacting with the valve seat openings. Wherein some of the passages have a different distance to the longitudinal axis in a radial direction (R). The end face of the valve seat including a plurality of grooved recesses, forming valve seat openings, with passages open into the same recess, the passages forming a fluid-conducting connection to the valve seat opening. Some of these passages connected to the valve seat opening have different distances to the longitudinal axis.

An annular valve in which the shape of a sealing surface of a valve body is optimized thus suppressing the occurrence of pressure loss in gas on the periphery of the sealing surface and extending the service life of the annular valve. The annular valve comprises: a valve seat 10 formed in a plate-like shape and including passage flow channels 11 each having an opening cross section formed in an arcuate shape; a receiving plate 20 formed in a plate-like shape and having discharge flow channels 21, the receiving plate 20 being arranged to face the valve seat 10 by way of an intermediate chamber 50; a valve body 30 formed in an annular shape corresponding to the arcuate shape of the opening cross section of the passage flow channel 11 and being arranged in the intermediate chamber 50, the valve body 30 being brought into contact with/separated from the valve seat 10 so as to open/close the passage flow channel 11; and a plurality of spring members 40 supported by the receiving plate 20, the spring members 40 each biasing elastically the valve body 30 toward the valve seat 10. A sealing surface 31 of the valve body 30 that faces the passage flow channel 11 is formed in a shape where at least one of pressure loss elements with respect to gas flowing towards the valve body 30 from the passage flow channel 11 is eliminated.

A compressor valve may include a guard and a seat affixed thereto. The seat may have an inlet surface and an outlet surface opposite the inlet surface. A reconditioning limit indicator may be defined by or adjacent the outlet surface. The reconditioning limit indicator may be indicative of a maximum amount of material of the seat removable from the outlet surface during reconditioning of the seat. The reconditioning limit indicator may be a groove defined by the outer cylindrical surface of the seat, a portion of the outer cylindrical surface of the seat adjacent the outlet surface and having an outer diameter smaller than the outer diameter of the seat, or a predetermined shape of a predetermined depth machined on the outlet surface of the seat.

A poppet valve including a valve seat cover having a plurality of inlet channels, wherein each inlet channel opens into a valve seat, and includes a plurality of closing elements, which are movable in an axial direction (A), wherein a closing element, which is movable in an axial direction (A), is associated with each valve seat in order to close the valve seat, wherein all closing elements are arranged on a common closing element holding device and the closing element holding device is movable in the axial direction (A) such that the closing elements can assume at least two positions, an open position, in which the closing elements are raised relative to the valve seats, and a closed position, in which the closing elements rest against the valve seats.

Fluid flow adapter for a cylinder of a reciprocating compressor, the cylinder having a side wall provided with a valve seat, the fluid flow adapter comprising a filler element having an internal surface facing an internal volume of the cylinder and an external surface facing the valve, the filler element having at least a channel connecting the internal surface to the external surface, wherein the internal surface is flush with the side wall of the cylinder, the channel being configured to allow the passage of fluid between the internal volume of the cylinder and the valve.

A poppet valve including a valve seat cover having a plurality of inlet channels, wherein each inlet channel opens into a valve seat, and includes a plurality of closing elements, which are movable in an axial direction (A), wherein a closing element, which is movable in an axial direction (A), is associated with each valve seat in order to close the valve seat, wherein all closing elements are arranged on a common closing element holding device and the closing element holding device is movable in the axial direction (A) such that the closing elements can assume at least two positions, an open position, in which the closing elements are raised relative to the valve seats, and a closed position, in which the closing elements rest against the valve seats.

It is disclosed a valve (1) for a reciprocating compressor, comprising a valve body (2) which comprises a seat (3) and a guard (4), the seat (3) and the guard (4) developing substantially parallel to a valve plane (A). The valve (1) also comprises a hydraulic apparatus (7) with pistons (9) and a hydraulic circuit (8) provided with a first portion (8a) which is made by additive manufacturing technology according to digital 3D design data.

A poppet valve for a piston compressor having a catcher, a valve body with a plurality of inlet ducts opening into a valve seat, and a plurality of closing elements which can be moved in an axial direction. Each inlet duct is assigned a closing element, and the valve seat is arranged to lie opposite the associated closing element in the axial direction in such a way that the valve seat can be closed by way of the closing element A spring is arranged between the catcher and the closing element, to bring a pre-stressing force on the closing element, which pre-stressing force is oriented towards the valve seat. The spring encloses an inner space. A guide part which runs in the axial direction is arranged on the catcher, on which guide part the closing element is mounted such that it can move, in the axial direction.