A dynamic control valve assembly for use in filling a liquid carbon dioxide storage and gas delivery system is provided, the assembly comprising: a valve body; an end nut with an inlet port for receiving liquid carbon dioxide; a chamber; an inlet cavity; a liquid port; a gas port; and a dynamic compound valve stem assembly for blocking the gas port while liquid carbon dioxide is delivered through the inlet port and allowing the liquid carbon dioxide to flow through the liquid port for storage in a liquid cylinder, and open the gas port and block the inlet port in order to allow carbon dioxide gasses from boiling liquid carbon dioxide within the liquid cylinder to pass through the gas port for storage in a gas cylinder until system pressure and temperature equilibrium is reached. The dynamic compound valve stem assembly comprises: a stem body having an inlet port poppet and a gas port poppet; an inlet cavity collar; and in some embodiments a collar biasing spring. The compound valve assembly is adapted to block the inlet port upon completion of the delivery of liquid carbon to the system when the system has an initial low pressure. The carbon dioxide gas may then be drawn from the gas cylinder for use in use in carbonated beverages and other applications such as agricultural and medical uses.

A high pressure pump. The pump comprises a fluid end assembly supported on a power end assembly. The power end assembly is modular and held together by a first set of stay rods. The fluid end assembly comprises a plurality of fluid end sections positioned in a side-by-side relationship. Each fluid end section comprises a housing made of multiple-piece construction. One or more pieces of the housing are configured to having a second set of stay rods attached thereto. The second set of stay rods interconnect the fluid end assembly and a power end assembly and a vertically offset from the first set of stay rods.

A hydraulic system comprises a valve distributor comprising one or more sections connectable to respective uses, a supply apparatus comprising a pump and a supply channel, a discharge channel connected to a low-pressure tank, a use signal channel coming from the section of the valve distributor and further comprises a hydraulic regulating device connected via said channels which includes a 2-position 3-way proportional valve configured so as to provide operative fluid at a conditioned pressure, different with respect to the pressure that is characteristic of the operative condition of use, to the supply apparatus and at least one proportional pressure reducing valve.

Disclosed herein are components, systems, and methods to improve performance and maintenance of high-pressure fluid systems, such as waterjet cutting systems. Specifically, embodiments of a valve cartridge are disclosed that include a pre-assembled body such that the valve cartridge is able to be inserted into a valve body of a valve assembly without the need for additional assembly or adjustment of the components of the valve cartridge, for example the poppet assembly of the valve cartridge.

A fluid end comprising a plurality of fluid end sections positioned in a side-by-side relationship. Each fluid end section is releasably attached to a connect plate. Each connect plate is attached to a power source using a plurality of stay rods. Each fluid end section comprises a housing in fluid communication with a pair of intake manifolds and a discharge conduit. A fluid routing plug is installed within each housing and is configured to route fluid throughout the housing. A plunger is installed within stuffing box attached to each housing. A number of features, including the location of seals within bore walls and carbide inserts within valve guides, aid in reducing or transferring wear.

A high pressure pump comprising a fluid end mechanically coupled to a power end. The power end is modular and comprises a crankshaft section, a crosshead section, and a connector section coupled together by a first set of stay rods. The fluid end comprises a plurality of fluid end sections positioned in a side-by-side relationship. Each of the plurality of fluid end sections are attached to the power end using a plurality of second set of stay rods.

A valve assembly includes: a valve body, having an inner cavity; a first pipeline arranged on the valve body, having one end that communicates with the inner cavity and another end that is configured to be connected to an air pump; a second pipeline arranged on the valve body, having one end that communicates with the inner cavity and another end that is configured to be connected to a bubble spraying interface of a pool; and a third pipeline arranged on the valve body, having one end that communicates with the inner cavity and another end that is configured to be connected to an inflating interface of the pool. When the air pump is in an activated state, the second pipeline is in a communicating state and supplies air to the spray bubble interface, and the third pipeline is in a communicating state and supplies air to the inflating interface.

A fluid routing plug for use with a fluid end section. The fluid end section being one of a plurality of fluid end sections making up a fluid end side of a high pressure pump. The fluid routing plug is installed within a horizontal bore formed in a fluid end section and is configured to route fluid between an intake and discharge bore. The fluid routing plug comprises a plurality of first and second fluid passages. The first and second passages do not intersect and are offset from one another. The first fluid passages are configured to direct fluid delivered to the horizontal bore from intake bores towards a reciprocating plunger. The second fluid passages are configured to direct fluid pressurized by the plunger towards a discharge bore.

A vent valve opens to provide a fluid path from a regulated pressure port to a vent port, a supply valve opens to provide a fluid path from the regulated pressure port to a supply pressure port. A control piston has a linear cam profile with a vent cam that opens the vent valve and a supply cam that opens the supply pressure valve.

A dual-disk check valve is disclosed. The dual-disk check valve comprises a housing having at least two inlet ports and an outlet port, at least two adapters securely affixed to both inlet ports, and a valve assembly, which is respectively disposed at each inlet port. The valve assembly at the inlet ports is configured to operate within the housing according to the fluid flow. The valve assembly comprises a disc provided with a spring, which is securely disposed against the respective two inlet ports using seat rings and washers. The disc at one inlet port is adapted for movement between an open position and a closed position, thereby preventing the fluid flow via the inlet port to the outlet port when another inlet port is opened for allowing fluid flow through it. The one inlet port is configured to automatically close when the fluid flows from another inlet port.