Abstract: An example valve includes: an external component having a longitudinal cavity therein, wherein the external component comprises a first annular groove disposed on an interior peripheral surface of the external component, and wherein the first annular groove is bounded by two annular surfaces; an internal component disposed, at least partially, in the longitudinal cavity of the external component, wherein the internal component comprises a second annular groove disposed on an exterior peripheral surface of the internal component, wherein the second annular groove is bounded by two respective annular surfaces, wherein the second annular groove is aligned with the first annular groove, such that the first annular groove and the second annular groove form an annular space therebetween; and a retention O-ring disposed in the annular space formed between the first annular groove and the second annular groove.

Abstract: An example valve includes: a pressure compensation spool configured to be subjected to a first fluid force of fluid received at an inlet port of the valve; a sleeve having a cavity and at least one throttling cross-hole; a throttling spool disposed in the cavity of the sleeve and configured to be axially movable therein, wherein the throttling spool blocks the at least one throttling cross-hole when the valve is unactuated; and a pressure compensation chamber, wherein when the valve is actuated, the throttling spool moves in the proximal direction to form a throttling flow area between a distal end face of the throttling spool and an edge of the at least one throttling cross-hole, allowing fluid flow from the inlet port to the pressure compensation chamber, thereby causing a second fluid force to be applied on the pressure compensation spool, allowing flow to an outlet port of the valve.

Abstract: An example valve includes: a pressure compensation spool configured to be subjected to a first fluid force of fluid received at an inlet port of the valve; a sleeve having a cavity and at least one throttling cross-hole; a throttling spool disposed in the cavity of the sleeve and configured to be axially movable therein, wherein the throttling spool blocks the at least one throttling cross-hole when the valve is unactuated; and a pressure compensation chamber, wherein when the valve is actuated, the throttling spool moves in the proximal direction to form a throttling flow area between a distal end face of the throttling spool and an edge of the at least one throttling cross-hole, allowing fluid flow from the inlet port to the pressure compensation chamber, thereby causing a second fluid force to be applied on the pressure compensation spool, allowing flow to an outlet port of the valve.

Abstract: An example valve includes: a housing having a first longitudinal cavity therein; a sleeve disposed, at least partially, in the first longitudinal cavity, where the sleeve has a second longitudinal cavity therein, and includes a first seat formed as a protrusion from an interior peripheral surface of the sleeve; a poppet mounted within the second longitudinal cavity and configured to move axially therein; and a bushing mounted, at least partially, in the second longitudinal cavity, such that the bushing is floating and is allowed to move axially in the second longitudinal cavity, where the bushing is hollow and defines a first port at a distal end of the bushing and defines a second seat at a proximal end of the bushing, and where the sleeve defines a second port and a third port disposed on an exterior peripheral surface of the sleeve.

Abstract: An example valve includes: an external component having a longitudinal cavity therein, wherein the external component comprises a first annular groove disposed on an interior peripheral surface of the external component, and wherein the first annular groove is bounded by two annular surfaces; an internal component disposed, at least partially, in the longitudinal cavity of the external component, wherein the internal component comprises a second annular groove disposed on an exterior peripheral surface of the internal component, wherein the second annular groove is bounded by two respective annular surfaces, wherein the second annular groove is aligned with the first annular groove, such that the first annular groove and the second annular groove form an annular space therebetween; and a retention O-ring disposed in the annular space formed between the first annular groove and the second annular groove.

Abstract: An example valve includes: an external component having a longitudinal cavity therein, wherein the external component comprises a first annular groove disposed on an interior peripheral surface of the external component, and wherein the first annular groove is bounded by two annular surfaces; an internal component disposed, at least partially, in the longitudinal cavity of the external component, wherein the internal component comprises a second annular groove disposed on an exterior peripheral surface of the internal component, wherein the second annular groove is bounded by two respective annular surfaces, wherein the second annular groove is aligned with the first annular groove, such that the first annular groove and the second annular groove form an annular space therebetween; and a retention O-ring disposed in the annular space formed between the first annular groove and the second annular groove.

Abstract: An example valve includes: an external component having a longitudinal cavity therein, wherein the external component comprises a first annular groove disposed on an interior peripheral surface of the external component, and wherein the first annular groove is bounded by two annular surfaces; an internal component disposed, at least partially, in the longitudinal cavity of the external component, wherein the internal component comprises a second annular groove disposed on an exterior peripheral surface of the internal component, wherein the second annular groove is bounded by two respective annular surfaces, wherein the second annular groove is aligned with the first annular groove, such that the first annular groove and the second annular groove form an annular space therebetween; and a retention O-ring disposed in the annular space formed between the first annular groove and the second annular groove.

Abstract: An example valve includes: a housing having a first longitudinal cavity therein; a sleeve disposed, at least partially, in the first longitudinal cavity, where the sleeve has a second longitudinal cavity therein, and includes a first seat formed as a protrusion from an interior peripheral surface of the sleeve; a poppet mounted within the second longitudinal cavity and configured to move axially therein; and a bushing mounted, at least partially, in the second longitudinal cavity, such that the bushing is floating and is allowed to move axially in the second longitudinal cavity, where the bushing is hollow and defines a first port at a distal end of the bushing and defines a second seat at a proximal end of the bushing, and where the sleeve defines a second port and a third port disposed on an exterior peripheral surface of the sleeve.

Abstract: An example valve includes: (i) a housing defining a first longitudinal cavity therein; (ii) a sleeve disposed in the first longitudinal cavity coaxial with the housing, where the sleeve defines (a) a first port at an end of the sleeve, (b) a second port disposed on an exterior peripheral surface of the sleeve, and (c) a second longitudinal cavity therein, where an interior peripheral surface of the sleeve defines a first portion that is tapered at a particular angle and a second portion adjacent to the first portion, where the second portion has two edges forming a corner that defines a seat; and (iii) a poppet mounted within the second longitudinal cavity and configured to move axially therein.

Abstract: An example valve includes: (i) a housing defining a first longitudinal cavity therein; (ii) a sleeve disposed in the first longitudinal cavity coaxial with the housing, where the sleeve defines (a) a first port at an end of the sleeve, (b) a second port disposed on an exterior peripheral surface of the sleeve, and (c) a second longitudinal cavity therein, where an interior peripheral surface of the sleeve defines a first portion that is tapered at a particular angle and a second portion adjacent to the first portion, where the second portion has two edges forming a corner that defines a seat; and (iii) a poppet mounted within the second longitudinal cavity and configured to move axially therein.