A fluid control device includes a housing partitioned into an input chamber and an output chamber by a housing land portion extending on the radially inner side, a spool arranged inside the housing and provided with a spool land portion that is configured to reciprocatively slide with respect to the housing land portion and that extends on a radially outer side of the spool, and a biasing member configured to bias the spool toward a valve closing position, wherein upon receiving drive force from an exterior, the spool is moved against bias force of the biasing member, and the input chamber and the output chamber communicate with each other, the spool includes a large diameter portion arranged in the input chamber and having a larger diameter than the spool land portion, and the large diameter portion and the housing land portion form a poppet valve structure.

A method and apparatus for selective connection of a first fluid communication region to a further fluid communication region at a subsea location and a flexible pipe are disclosed. The apparatus comprises a valve body that includes a primary passageway extending from a first port of the valve body, and connectable to a first fluid communication region, to a further port of the valve body, connectable to a further fluid communication region, the valve body comprising a channel intersecting the primary passageway and extending between an open channel end and a closed channel end; at least one slidable member comprising a slidable body locatable in the channel and comprising a slidable member fluid passage extending through or around the slidable body; and at least one biasing element locatable proximate to at least one of the open channel end or closed channel end, for biasing the slidable body towards the open channel end; wherein the slidable member is slidable along a longitudinal axis of the channel responsive to a local environmental pressure provided at the open channel end.

A valve having at least one valve housing and at least one piston. The valve housing (7) has a hollow-cylindrical first portion (11) with a first diameter (D1) and a second portion (12), connected to the first portion (11), with a second diameter (D2); a first opening (15) is formed on the end face of the valve housing (7) and at least a second opening (16) is formed in the second portion (12); and the first diameter (D1) of the first portion (11) is greater than the second diameter (D2) of the second portion.

A pressure regulator including a closure resisting mechanism that increases the total closure resisting force of a closure element to prevent the closure element from moving into a closed position until a predetermined pressure set point is reached. The closure resisting mechanism operates automatically and is spring actuated in response to pressure within a fluid pathway of the regulator. The closure resisting mechanism is disposed external to the fluid pathway so as not to impede fluid flow.

A metering valve has a shutoff position at which it blocks flow from the metering valve outlet line from reaching an outlet to a use. A spool has a first end and a second end. The housing has a first shoulder associated with the first end and a second shoulder associated with the second end. In the shutoff position, the spool has the first end spaced from the first shoulder, and the second end spaced from the second shoulder. A fuel system for a gas turbine engine is also disclosed.

A valve which comprises a body (1), a closing member (2) movable in a space (11) between walls (9, 10) of the body transversely in relation to a flow passageway (3) provided through the body between at least two positions, a first position in which the flow passageway (3) is closed, and a second position in which the flow passageway is open, and an actuator (4) for moving the closing member (2) linearly between said at least two positions, which body (1) further comprises an edge part (12, 34). The valve comprises a cleaning arrangement in which an aperture (35, 36) for conducting a medium is arranged in the valve body (1), in a part of the body (1) located on the side of the closing member (2) actuator (4), and is configured to spray a cleaning medium into a part of the space located between walls (9, 10, 12, 34) of the space (11) and the closing member (2). The invention also relates to a method.

A valve which comprises a body (1), a closing member (2) movable in a space (11) between walls (9, 10) of the body transversely in relation to a flow passageway (3) provided through the body between at least two positions, a first position in which the flow passageway (3) is closed, and a second position in which the flow passageway is open, and an actuator (4) for moving the closing member (2) linearly between said at least two positions, which body (1) further comprises an edge part (12, 34). The valve comprises a cleaning arrangement in which an aperture (35, 36) for conducting a medium is arranged in the valve body (1), in a part of the body (1) located on the side of the closing member (2) actuator (4), and is configured to spray a cleaning medium into a part of the space located between walls (9, 10, 12, 34) of the space (11) and the closing member (2). The invention also relates to a method.

Systems, methods, and apparatuses for irrigating a tissue site are described. The system can include a tissue interface and a sealing member configured to be placed over the tissue site to form a sealed space, and a negative-pressure source fluidly coupled to the sealed space. The system includes an irrigation valve having a housing, a piston disposed in the housing, a fluid inlet to fluidly couple a fluid inlet chamber to a fluid source, and a fluid outlet to fluidly couple a fluid outlet chamber to the sealed space. A piston passage extends through the piston and fluidly couples the fluid inlet chamber and the fluid outlet chamber, and a biasing member is coupled to the piston to bias the irrigation valve to a closed position. The negative-pressure source is configured to move the piston between the closed position and an open position to draw fluid to the sealed space.

A pump assembly is disclosed. The pump assembly including an outer casing having a first end, an opposing second end, and a cavity therein; a discharge tube positioned in the cavity and exiting the first end of the outer casing; a check valve positioned in the cavity and operably connected to the discharge tube by a coupling; and a multi-float control assembly positioned in the cavity, the multi float control assembly including a bottom float check valve operably connected to the discharge tube by the coupling and an upper float check valve connected to a vent exiting the first end of the outer casing.

An automatic valve includes a body configured to receive a piston axially therein, the piston being movable within the body between a first axial position in which the piston is configured to seal a valve opening when pneumatic pressure is applied to the piston and a second axial position in which the piston is configured to be withdrawn from the valve opening such that a fire suppression agent can enter the valve body through the valve opening, wherein the piston includes a channel longitudinally therethrough and a check valve positioned within the channel such that fluid can enter the check valve in a first longitudinal direction but not in a second longitudinal direction.