A solenoid-actuated valve includes a solenoid portion extending along a longitudinal axis. The solenoid portion includes a solenoid housing defining a solenoid interior, a coil, and an armature, with the armature being moveable along the longitudinal axis in response to energization of the coil. The solenoid-actuated valve also includes a valve portion coupled to the solenoid portion. The valve portion includes a valve member moveable by the armature. The solenoid-actuated valve further includes a valve filter disposed in the solenoid interior and/or coupled to the solenoid housing and configured to separate the solenoid interior from a hydraulic circuit when the valve portion is coupled to a valve housing for allowing fluid to flow into and out of the solenoid interior upon actuation of the armature.

A pressure valve including a body including at least one admission opening and at least one discharge opening, a slide valve sliding in the body, the slide valve defining a chamber, with the body, and including a head arranged facing a seat of the admission opening, a spring pressing the head of the slide valve against the seat, a lip for applying the head to the seat. The head includes at least one hole bringing the chamber into communication with the discharge opening, each hole being arranged facing the seat and downstream from the lip in relation to the admission opening in order to reduce the pressure in the chamber by a Venturi effect when the slide valve is open.

A pressure valve including a body including at least one admission opening and at least one discharge opening, a slide valve sliding in the body, the slide valve defining a chamber, with the body, and including a head arranged facing a seat of the admission opening, a spring pressing the head of the slide valve against the seat, a lip for applying the head to the seat. The head includes at least one hole bringing the chamber into communication with the discharge opening, each hole being arranged facing the seat and downstream from the lip in relation to the admission opening in order to reduce the pressure in the chamber by a Venturi effect when the slide valve is open.

An apparatus for locking a sealing member of a valve in a piping system or an enclosed system comprises: (a) a locking mechanism housing having a upper end, a lower end opposed to the upper end, and a body between the upper end and the lower end; (b) at least a locking mechanism opening formed on the body; (c) at least a locking mechanism disposed in the locking mechanism opening; wherein the valve further comprises a valve housing and a sealing member; wherein the locking mechanism housing, the at least a locking mechanism opening, at least a locking mechanism, and the sealing member is disposed inside the valve housing; wherein a first pressure exists in the upper end of the locking mechanism housing; and wherein a second pressure exists in the lower end of the locking mechanism housing.

An apparatus for locking a sealing member of a valve in a piping system or an enclosed system comprises: (a) a locking mechanism housing having a upper end, a lower end opposed to the upper end, and a body between the upper end and the lower end; (b) at least a locking mechanism opening formed on the body; (c) at least a locking mechanism disposed in the locking mechanism opening; wherein the valve further comprises a valve housing and a sealing member; wherein the locking mechanism housing, the at least a locking mechanism opening, at least a locking mechanism, and the sealing member is disposed inside the valve housing; wherein a first pressure exists in the upper end of the locking mechanism housing; and wherein a second pressure exists in the lower end of the locking mechanism housing.

Embodiments of the present disclosure include a system for controlling a fluid flow. The system includes a valve body including a bore extending along an axis, an inlet, and an outlet, wherein a flow passage extends transverse the axis from the inlet to the outlet, a stem extending through the bore along the axis, and a valve member coupled to the stem. The valve member is movable along the axis, via the stem, between a closed position where the valve member blocks the flow passage to an open position where the valve member does not block the flow passage. The system also includes a balancing system coupled to the valve member, the balancing system comprising a tether and a balance member, wherein an opening force unseating the valve member is translated to the balance member.

A heat dissipation assembly includes a case and a partition structure. The case has a chamber. The partition structure includes a partition wall vertically disposed in the chamber to separate a first flow path and a second flow path in the chamber, and the partition wall has a breach and a valve structure disposed at the breach, wherein the valve structure covers the breach when the valve structure is not pushed open. When a fluid pressure existed in a section of one of the first flow path and the second flow path which is adjacent to the valve structure is greater than a fluid pressure existed in a section of the other one of the first flow path and the second flow path which is adjacent to the valve structure, the valve structure is pushed away to expose at least a part of the breach.

A blowout preventer includes a body containing upper and lower ram assemblies. The body defines a surface pressure area above the upper rams and a wellbore pressure area between the upper and lower rams. An upper passageway communicates an outside of the body with the surface pressure area and a lower passageway communicates the outside with the wellbore pressure area. A valve adjacent the outside surface allows communication between the areas for pressure equalization. A bonnet is removed from the body by unfastening a flange from a face of the body and extending the flange from an assembled configuration to an extended configuration, thereby exposing a tool receiving surface on a ram change piston, wherein the piston communicates with the body and the flange. The tool surface is engaged for manipulating and disengaging the piston from one of the body and the flange, thereby facilitating removal of the flange.

A monolithic bypass includes an upstream conduit, the upstream conduit defining a first end and a second end, the upstream conduit defining an upstream bore extending from the first end to the second end, the first end defining an inlet opening to the upstream bore; a downstream conduit, the downstream conduit defining a first end and a second end, the downstream conduit defining a downstream bore extending from the first end to the second end, the first end defining an outlet opening to the downstream bore; and a bypass valve body seamlessly connected to the second end of the upstream conduit and the second end of the downstream conduit, the bypass valve body defining a bypass body bore, the upstream bore, the downstream bore, and the bypass body bore defining a seamless bypass bore extending from the inlet opening to the outlet opening; wherein the monolithic bypass is substantially U-shaped.

A monolithic bypass includes an upstream conduit, the upstream conduit defining a first end and a second end, the upstream conduit defining an upstream bore extending from the first end to the second end, the first end defining an inlet opening to the upstream bore; a downstream conduit, the downstream conduit defining a first end and a second end, the downstream conduit defining a downstream bore extending from the first end to the second end, the first end defining an outlet opening to the downstream bore; and a bypass valve body seamlessly connected to the second end of the upstream conduit and the second end of the downstream conduit, the bypass valve body defining a bypass body bore, the upstream bore, the downstream bore, and the bypass body bore defining a seamless bypass bore extending from the inlet opening to the outlet opening; wherein the monolithic bypass is substantially U-shaped.