An electropneumatic positioner for a pneumatic actuator to operate a control device of a processing plant can include two modular pneumatic slots and a pneumatic control output. The two modular pneumatic slots can engage with a respective modular pneumatic component. The two pneumatic slots and the pneumatic components can be modularly matched to one another such that their respective pneumatic interfaces merge into one another when a pneumatic slot is engaged. The pneumatic control output can output a pneumatic control pressure signal to the pneumatic actuator. The two modular pneumatic slots and the pneumatic control output can form a pneumatic series connection.

A proportional pressure controller includes a body having inlet, outlet, and exhaust ports. A fill valve communicates with pressurized fluid in the inlet port. A dump valve communicates with pressurized fluid from the fill valve. An inlet poppet valve opens by pressurized fluid through the fill valve. An exhaust poppet valve when closed isolates pressurized fluid from the exhaust port. An outlet flow passage communicates with pressurized fluid when the inlet poppet valve is open, and communicates with the outlet port and an exhaust/outlet common passage. An isolation valve assembly selectively isolates fluid flow to and from the inlet port or the exhaust port to achieve a zero pressure condition.

A medical fluid pneumatic manifold system includes a first plate including a plurality of apertures, a second plate attached to the first plate so as to form a plurality of pneumatic flowpaths sealed between the first plate and the second plate, a plurality of tubing connections and a plurality of pneumatic tubes connected to the plurality of tubing connections, the plurality of tubing connections placing the plurality of pneumatic tubes in pneumatic communication with the plurality of pneumatic flowpaths via the plurality of apertures of the first plate, and a pneumatic reservoir in pneumatic communication with the plurality of pneumatic flowpaths, the pneumatic reservoir configured to provide pneumatic pressure to the plurality of pneumatic tubes.

A medical fluid pneumatic manifold system includes a plurality of pump and valve chambers for controlling a flow of medical fluid, a header including a plurality of pneumatic passageways, each passageway in pneumatic communication with one of the pump or valve chambers, a plurality of electrically actuated pneumatic valves, and a plate defining a plurality of pneumatic apertures, wherein the header and the plurality of electrically actuated pneumatic valves are separately attached to the plate, such that each pneumatic aperture in the plate is placed in pneumatic communication with one of the plurality of pneumatic passageways of the header and one of the electrically actuated pneumatic valves.

A zoned fluid control system in a valve manifold system has a plurality of manifold blocks connected together and a plurality of control valves mounted to the manifold blocks with the control valves being electrically actuated and pilot pressure operated. The plurality of manifold blocks forms at least first and second separate pilot pressure passages of a respective first zone and second zone not connected to each other for supplying a respective first set and second set of control valves with independently controlled pilot pressure. A pilot supply valve selectively supplies pilot pressure and shuts off pilot pressure to the second pilot pressure passage without affecting the pilot pressure to the first pilot pressure passage thereby disabling the second set of control valves as a separate zone independent from the first set of control valves.

A solenoid valve manifold (10) includes a connector member (70) that is formed by integrating a base portion (71) with a first connector portion (80) configured to electrically connect a first conductive member (52) to a circuit board (41) and a second connector portion (90) configured to electrically connect a second conductive member (62) to the circuit board (41). The base portion (71) has a through-hole (72). The base (30) includes two engagement projections (46). The base portion (71) is elastically deformable in a direction intersecting an insertion direction when the two engagement projections (46) are inserted into the through-hole (72). The connector member (70) is configured to be attached to the base (30) when a part of the base portion (71) around the through-hole (72) is engaged with the two engagement projections (46).

A plurality of control valves (39A to 39D, 40A to 40D, 41A to 41D, 42A to 42D, 43) is aligned and disposed in the right-and-left direction and in the vertical direction on a first mounting surface (38C) and a second mounting surface (38D). Further, a plurality of control valves (47, 48) is aligned and disposed in the right-and-left direction and in the vertical direction on a first mounting surface (46B) and a second mounting surface (46C).

A hydraulic manifold fluidly connects at least two series of tanks. The hydraulic manifold includes at least one filling inlet, at least one emptying outlet, a filling pipe, an emptying pipe, and the same number of branch pipes as there are series of tanks. The branch pipe comprises, at a branch pipe inlet, a connection to the filling pipe via an upstream non-return valve. The branch comprises, at a branch pipe outlet, a connection to the emptying pipe via a downstream non-return valve.

A modular valve island 100 comprising a plurality of valves, a supply exhaust module 6, a data communication module 7 and a diagnostic module 8. At least one of the plurality of valves has at least one integrated sensor configured to detect an operating condition of the modular valve island. The at least one integrated sensor is electrically connected to the diagnostic module 8, to send sensor signals thereto. The diagnostic module 8 is configured to receive and process the sensor signals therein to identify the operating condition. The modular valve island 100 is configured to provide data relating to the operating condition of the modular valve island 100 via at least one of: a user interface provided in the diagnostic module 8; an industrial Ethernet link; or a wireless network and/or cloud communication link.

Embodiments of a manifold of a hydraulic fracturing system include a junction having an inlet flow bore. The junction can include an integrated flow junction and valve check assembly having a body including a central portion and one or more side portions. The central portion can be positioned between a pair of manifold sections of the manifold and attached thereto. The one or more side portions extend radially from the central portion and include an inlet bore through which a pressurized fluid is received and supplied to the manifold. One or more check valves is positioned along the inlet bore so as to be integrated within the body of the junction.