A drain valve for a pressurised fluid chamber comprises a collection chamber for collecting pressurised fluid from the pressurised fluid chamber; a vent chamber for venting the pressurised fluid from the collection chamber; a master valve between the collection chamber and the vent chamber; and a slave valve between the pressurised fluid chamber and the collection chamber. The master valve is configured to open the slave valve when the master valve is closed, and to close the slave valve when the master valve is open. The master valve is configured to open the slave valve to allow pressurised fluid from the pressurised fluid chamber to enter the collection chamber, and configured to close the slave valve to allow pressurised fluid from the collection chamber to enter the vent chamber. The master valve and the slave valve cannot be shut at the same time.

A valve includes a set screw that is screwable into and out of a complementary female threaded opening in a valve part for changing a setting of the valve, for changing an adjustable flow restriction of the valve, in which the set screw includes a free outer end that projects outside the valve part, and a gripping part on its free outer end for a tool to be engageable thereupon. The free outer end of the set screw includes a male thread onto which a locking nut is screwed. A protective cap is provided for covering the free outer end, that includes a first cap portion with a rotation space for fitting freely rotatable over the locking nut, and a second cap portion with a complementary female thread that is screwed onto the male thread towards a locked position.

A valve includes a set screw that is screwable into and out of a complementary female threaded opening in a valve part for changing a setting of the valve, for changing an adjustable flow restriction of the valve, in which the set screw includes a free outer end that projects outside the valve part, and a gripping part on its free outer end for a tool to be engageable thereupon. The free outer end of the set screw includes a male thread onto which a locking nut is screwed. A protective cap is provided for covering the free outer end, that includes a first cap portion with a rotation space for fitting freely rotatable over the locking nut, and a second cap portion with a complementary female thread that is screwed onto the male thread towards a locked position.

A fluid pressure proportional valve includes a valve body, a first core shaft, a second core shaft, and a driving motor. The valve body has a first orifice, a second orifice, a third orifice, and a receiving space having a valve port. The first and second core shafts are located in the receiving space. The first core shaft has a sealing portion, an abutting portion, and a flow channel. Under normal status, the sealing portion seals the valve port, and the second orifice communicates with the third orifice via the flow channel When the driving motor drives the second core shaft to move along an axial direction, the second core shaft could seal the flow channel to block the communication between the second orifice and the third orifice and push the abutting portion of the first core shaft to depart from the valve port and the sealing portion, thereby communicating the first and the second orifices.

The invention relates to an electromagnetic valve device having an armature (18) which is moveable in an axial direction in a valve housing (10) in response to energizing of a stationary coil (12), and which is designed to interact with a first valve seat (22) associated with a fluid inlet connection (26) of the valve housing, a first fluid flow path (36) being formed in the valve housing such that fluid flowing through the opened first valve seat can flow in order to actuate a plunger (32) moveable relative to the armature (18) and to which a preloading force is applied, the actuation causing a second valve seat (43) interacting with the plunger (32) to be opened to produce a fluid connection to a fluid working connection (42) of the valve housing, and the valve housing having a fastening structure (44, 46) in the form of at least one hole extending at an angle to the axial direction, the fluid inlet connection (26) and the working connection (42) being formed on the same axial side of the valve housing in relation to the structure means.

The invention relates to an electromagnetic valve device having an armature (18) which is moveable in an axial direction in a valve housing (10) in response to energizing of a stationary coil (12), and which is designed to interact with a first valve seat (22) associated with a fluid inlet connection (26) of the valve housing, a first fluid flow path (36) being formed in the valve housing such that fluid flowing through the opened first valve seat can flow in order to actuate a plunger (32) moveable relative to the armature (18) and to which a preloading force is applied, the actuation causing a second valve seat (43) interacting with the plunger (32) to be opened to produce a fluid connection to a fluid working connection (42) of the valve housing, and the valve housing having a fastening structure (44, 46) in the form of at least one hole extending at an angle to the axial direction, the fluid inlet connection (26) and the working connection (42) being formed on the same axial side of the valve housing in relation to the structure means.

A flow arrangement for a control valve can include a plurality of flow-control components that are movable relative to each other and that define at least part of a flow path from a pressure source to a dome of a pressure relief valve. The flow-control components can be movable relative to each other in response to system pressure to selectively increase or decrease the flow capacity of the flow path. In some cases, flow capacity can be increased or decreased during initial loading of the dome, at low pressures, or at higher pressures.

A capacity control valve includes: a valve body (10) including first communication passages (11), second communication passages (12), third communication passages (13), and a main valve seat (15a); a valve element (21) including an intermediate communication passage (29), a main valve portion (21b), and an auxiliary valve portion 21c; a solenoid (30) that drives a rod (36) provided with an auxiliary valve seat (23c); a first biasing member (43) that biases in a valve closing direction of the main valve portion (21b); and a second biasing member (44) that biases in a valve closing direction of the auxiliary valve portion (21c), wherein the rod (36) moves relative to the valve element (21) to open and close the auxiliary valve portion (21c). The capacity control valve allows a liquid refrigerant to be efficiently discharged and allows a driving force of a compressor to be decreased.

A valve device for controlling a fluid flow, in particular an air flow, having at least one inlet and at least two outlets, at least one of the outlets being fluidically connectable in each case to the inlet via a through-channel of at least one manipulable guide means. The through-channel of the guide means can be changed at least indirectly via a control fluid flow either with regard to at least a section of its internal cross section or can be rotated at least to a limited extent with regard to its orientation with respect to the outlets and the inlet can be rotated at least to a limited extent.

A solenoid valve assembly is provided. The solenoid valve assembly includes a pilot assembly, a body, and a main poppet valve assembly. The pilot assembly includes a frame having an external wall and an internal wall forming an annular cavity. The body includes an inlet cavity, a channel, an outlet cavity, and a main poppet valve seat disposed in the channel between the inlet cavity and the outlet cavity. The main poppet valve assembly includes a main poppet valve and two movable sealing elements. The main poppet valve has a cylindrical shape having an internal diameter, an external diameter, and grooves. The main poppet valve is at least partially disposed in the annular cavity and configured to shut the main poppet valve seat. The movable sealing elements are disposed in the grooves to seal the main poppet valve to the external wall and the internal wall of the frame.