A regulator for in-line modulation of the flow rate of fluid during blood collection includes a fluid transfer device for transferring fluid from a patient to a collection device. The fluid transfer device comprises a fluid passageway defined by a tubular sidewall and a flexible member associated with a portion of the tubular sidewall. The flexible member is configured for movement with respect to the fluid passageway upon exposure of the fluid transfer device to a differential pressure during a blood collection procedure to prevent collapse of a patients blood vessel. The flexible member of the regulator can be a frame surrounding a flexible diaphragm. Alternatively, the flexible member can include a flexible material integrally formed within the tubular sidewall of the pressure regulator.

An injection molding system comprising: a first selected valve, one or more downstream valves, delivering a fluid to a mold cavity, at least one fluid property sensor that detects a flow front of fluid material flowing downstream through the mold cavity at a trigger location within the cavity disposed between the first gate and at least one selected downstream gate, a controller instructing an actuator associated with the downstream gates to open the gates at a predetermined open gate target time on a first injection cycle, each valve associated with a position sensor that detects opening of a gate at an actual open gate time to the controller, the controller automatically adjusting time of instruction to open the gates on a subsequent injection cycle by an adjustment time equal to any delay in time between the predetermined open gate target time and the actual open gate time.

There is provided a component mounter for mounting a component on a mounting target object, including: a mounting head comprising a base section having, in the interior thereof, a first gas passage and a second gas passage that does not communicate with the first gas passage; a lifting and lowering mechanism for lifting and lowering the base section; a suction nozzle having a nozzle section disposed below the base section and configured to be lifted up and lowered, as the base section is lifted up and lowered, to pick up the component through a negative pressure supplied to the first gas passage; a biasing section for biasing the nozzle section downwards while permitting the nozzle section to be pushed in towards the base section; and a valve for switching between presence and absence of communication between the second gas passage and the outside depending on whether a push-in amount of the nozzle section has not yet reached or reached a predetermined value; and a detecting device for detecting at least one of a flow rate or a pressure of gas flowing through the second gas passage.

A passive, self-regulating valve includes a static pressure chamber and an elastically collapsible tube supported within the static pressure chamber. The elastically collapsible tube is defined by a geometry that determines an activation pressure of the valve. The passive, self-regulating valve also includes a flow restrictor in fluid communication with the elastically collapsible tube inside the static pressure chamber, as well as piping connecting a source of pressurized liquid both to the flow restrictor and to an opening into the static pressure chamber. The piping enables the flow restrictor to control flow rate of the pressurized liquid through the valve independent of the activation pressure of the valve. In a preferred embodiment, the flow restrictor is a needle valve.

A check valve, including a valve and a valve support surface, to permit a fluid to move through the check valve in a first direction and resist a fluid flow through the valve in a second direction, the valve having a valve diaphragm and an isolating bridge, with a portion of the valve engaging against valve support surface to resist deformation or stretching of the valve when a backflow of fluid into the check valve occurs. The valve support surface having a first support surface and a second support surface, and the valve positioned with the valve diaphragm spaced apart from the first support surface, and the isolating bridge spaced apart from the second support surface.

A flow control valve includes a membrane which has at least one opening for the flow of a fluid and an annular body which has a flow contact surface and at least one flow opening. The flow opening is in flow connection with the at least one opening in the membrane. The membrane is constructed to be bendable in a direction towards the flow contact surface.

A fluid flow control device, which is for establishing a controllable fluid communication of a fluid flow between an external fluid reservoir and a base pipe of a production string, includes a primary flow path and a secondary flow path. The primary flow path is arranged inside a main housing. The primary flow path includes a primary flow path inlet configured to guide a primary fluid flow constituting a major portion of the fluid flow into the main housing during operation and a primary flow path outlet configured to guide the primary fluid flow from the main housing and into the base pipe during operation. The secondary flow path is configured to guide a secondary fluid flow constituting the remaining portion of the fluid flow. The secondary flow path includes a first fluid flow restrictor configured to generate a pressure decrease from a pressure p.sub.1 upstream of the first fluid flow restrictor to a pressure p.sub.2 downstream of the first fluid flow restrictor, a second fluid flow restrictor arranged downstream of the first fluid flow restrictor and configured to generate a pressure decrease from the pressure p.sub.2 upstream of the second fluid flow restrictor to a pressure p.sub.3 downstream of the second fluid flow restrictor and a chamber arranged downstream the first fluid flow restrictor and upstream the second fluid flow restrictor. A movable valve element is arranged inside the main housing and configured to close the primary flow path for fluid flow when exposed to a pressure force from within the chamber exceeding a threshold pressure force. The fluid flow control device further includes a top housing covering the primary flow path inlet of the main housing. The top housing includes a fluid flow inlet allowing the fluid flow to flow from the external fluid reservoir and at least partly into the primary flow path inlet, a swirl inducer inducing a swirl of the fluid flow between the fluid flow inlet and the primary flow path inlet, and a secondary flow path inlet configured to guide a secondary fluid flow into the secondary flow path.

A check valve, including a valve and a valve support surface, to permit a fluid to move through the check valve in a first direction and resist a fluid flow through the valve in a second direction, the valve having a valve diaphragm and an isolating bridge, with a portion of the valve engaging against valve support surface to resist deformation or stretching of the valve when a backflow of fluid into the check valve occurs. The valve support surface having a first support surface and a second support surface, and the valve positioned with the valve diaphragm spaced apart from the first support surface, and the isolating bridge spaced apart from the second support surface.

A device for limiting or keeping constant a quantity of fluid flowing therethrough, includes: a housing with a front chamber and a rear chamber; a partition arranged in the housing with two or more openings; and a flow limiting element arranged in one or both openings. The flow limiting element includes a housing provided with an inlet, an outlet and a throughflow opening; and a resilient plate-like valve element mounted in the housing, substantially able to close the throughflow opening by resilient movement in the direction of a valve seat arranged in the housing adjacently of the throughflow opening. The valve element is fixed on one side and can move resiliently on the opposite side in the direction of the valve seat. A mould produces one or more injection-moulded products. The injection-moulded product is a flow limiter for limiting the force of the flow of a fluid flowing therethrough.

A gas supply regulation assembly includes at least one inlet capable of being in fluid communication with at least one gas bottle and an outlet capable of being in fluid communication with a gas-consuming appliance. The gas supply regulation assembly further includes a gas pressure detection device for detecting gas pressure in a chamber communicating with the outlet.