Abstract: A joint for duplex storage type fluid container that can attain secure fitting of a liquid discharge tube and can attain easy, secure connection of a passage for fluid emission disposed in a dispenser to the liquid discharge tube. There is provided a joint for fluid container comprising flexible bag (12) furnished with neck part (11) openable for permitting injection of liquid and comprising outside container (13) formed so as to support the neck part (11) by mouth part (13a) and accommodate the bag (12), which joint is so structured that liquid discharge tube (15) with collar part (15a) can be fitted through plug (14) to the mouth part (13a) of the outside container (13), and further so structured that flow channel (21a) fitted to dispenser (2) can be linked directly to fluid passage (15b) of the liquid discharge tube (15).

Abstract: Provided are an orifice member, and a differential-pressure flow meter and a flow-regulating device using the orifice member, that allow purging to be carried out easily when changing the fluid to be circulated, that are less likely to cause contamination and leaching of impurities to the circulated fluid, and that can be easily produced. The flow-regulating device includes a first pressure-measuring device (object to be connected to) that is connected to one end of the orifice member, and a second pressure-measuring device (object to be connected to) that is connected to the other end of the orifice member, and a flow-regulating valve that is connected to the downstream side of the differential-pressure flow meter, which includes the above-mentioned units.

Abstract: A damper that has chemical resistance, that can be used under a high-pressure environment, and that can remove pressure pulsations is provided. This damper includes a fluid chamber into and out of which a fluid flows, a diaphragm defining at least one surface of the fluid chamber, and a separate chamber adjacent to the fluid chamber in a fluid-tight manner, with the diaphragm disposed therebetween. The diaphragm includes a first film having chemical resistance and a second film having pressure resistance.

Abstract: A flow rate regulation valve (10) comprises a housing (11) formed with an axial hole (14) and a valve hole (13) communicating with the axial hole, a needle valve (60) adapted to move within the axial hole relative to a valve seat located between the axial hole and the valve hole, and a flow rate adjust knob (40) mounted at the proximal end of the needle valve extending from the housing. The needle valve is moved relative to the valve seat by rotating the flow rate adjust knob thereby to regulate the flow rate of the fluid flowing through the valve hole. A first valve body (67) is arranged at the forward end of the needle valve and a second valve body (65) extends from the end surface (67a) of the first valve body.

Abstract: A flow rate regulation valve comprising a housing (11) formed with a valve hole (13), a needle valve (60) moved relative to the valve seat (16) in the housing, and a flow rate adjust knob (40) mounted at the proximal end of the needle valve extending from the housing, wherein the needle valve is moved relative to the valve seat by rotating the flow rate adjust knob thereby regulating the flow rate of fluid flowing through the valve hole, the flow rate regulation valve further comprising a knob fixing means (35) for stopping the rotation of the flow rate adjust knob. As a result, the flow rate is prevented from being changed accidentally by a user or the like. Further, the value may have a seal adjust means (20) adjusting the sealed state between the housing and the needle valve. The seal adjust means may be formed as a part of the housing, and may be fixed to the housing by a fixing pin (15).

Abstract: In an in-line type fluid pressure sensor for determining the fluid pressure in flow of a fluid circulated through a fluid flow circuit employed in a semiconductor manufacturing apparatus, an inner wall surface located particularly in a downstream side connection port (6) of a body member (1) of the sensor is moderately inclined in contour in longitudinal section, which makes it possible for the fluid to flow through a fluid introduction portion (9a) of the body member (1) in a smooth manner without standing in flow in the fluid introduction portion (9a). Due to this, in such a fluid introduction portion (9a), there is not any fear of occurrence of the fluid flow standing phenomenon or problem at all. This makes it possible for the in-line type fluid pressure sensor to realize a precise measurement of the fluid pressure in flow of the fluid circulated through the fluid flow circuit.

Abstract: The present invention proposes an ultrasonic flow meter, comprising a conduit for measurement in which a liquid flows therein, and a pair of measurement sections which are provided in said conduit for measurement and are spaced apart by a certain interval along its longitudinal direction, and which obtains the flow velocity of said flowing liquid from the difference in the propagation time periods of ultrasonic in the two opposite directions between these measurement sections, and thereby measures the flow rate thereof; wherein a pair of fixing portions are provided which respectively support said conduit for measurement at the exterior side and also at the interior side in the longitudinal direction of said measurement sections.

Abstract: The present invention proposes an ultrasonic flow meter, comprising a conduit for measurement in which a liquid flows therein, and a pair of measurement sections which are provided in said conduit for measurement and are spaced apart by a certain interval along its longitudinal direction, and which obtains the flow velocity of said flowing liquid from the difference in the propagation time periods of ultrasonic in the two opposite directions between these measurement sections, and thereby measures the flow rate thereof; wherein a pair of fixing portions are provided which respectively support said conduit for measurement at the exterior side and also at the interior side in the longitudinal direction of said measurement sections.

Abstract: In an in-line type fluid pressure sensor for determining the fluid pressure in flow of a fluid circulated through a fluid flow circuit employed in a semiconductor manufacturing apparatus, an inner wall surface located particularly in a downstream side connection port (6) of a body member (1) of the sensor is moderately inclined in contour in longitudinal section, which makes it possible for the fluid to flow through a fluid introduction portion (9a) of the body member (1) in a smooth manner without standing in flow in the fluid introduction portion (9a). Due to this, in such a fluid introduction portion (9a), there is not any fear of occurrence of the fluid flow standing phenomenon or problem at all. This makes it possible for the in-line type fluid pressure sensor to realize a precise measurement of the fluid pressure in flow of the fluid circulated through the fluid flow circuit.

Abstract: The present invention proposes an ultrasonic flow meter, comprising a conduit for measurement in which a liquid flows therein, and a pair of measurement sections which are provided in said conduit for measurement and are spaced apart by a certain interval along its longitudinal direction, and which obtains the flow velocity of said flowing liquid from the difference in the propagation time periods of ultrasonic in the two opposite directions between these measurement sections, and thereby measures the flow rate thereof, wherein a pair of fixing portions are provided which respectively support said conduit for measurement at the exterior side and also at the interior side in the longitudinal direction of said measurement sections.

Abstract: The present invention proposes an ultrasonic flow meter, comprising a conduit for measurement in which a liquid flows therein, and a pair of measurement sections which are provided in said conduit for measurement and are spaced apart by a certain interval along its longitudinal direction, and which obtains the flow velocity of said flowing liquid from the difference in the propagation time periods of ultrasonic in the two opposite directions between these measurement sections, and thereby measures the flow rate thereof; wherein a pair of fixing portions are provided which respectively support said conduit for measurement at the exterior side and also at the interior side in the longitudinal direction of said measurement sections.

Abstract: This ultrasonic flow meter is provided for measuring flow volume by determining the flow rate of a liquid from the difference in propagation times of ultrasonic waves in both directions between measuring units by providing measuring units having transducer at an interval in the lengthwise direction on a measuring pipe through which liquid flows. A pair of mounting members are provided in a lower case of a case serving as a base at an interval wider than that of measuring units. The measuring pipe is held by respective retaining indentations to the outside in the axial direction of measuring units by facing a left mounting member and a right mounting member that compose the mounting members. In addition, an insulating material is filled into the case so as to cover the measuring units and the measuring pipe.

Abstract: The present invention provides an ultrasonic flow meter that measures flow volume by determining the flow rate of a liquid from the difference in propagation times of ultrasonic waves in both directions between measuring units by providing measuring units having transducer at an interval in the lengthwise direction on a measuring pipe through which liquid flows. A pair of mounting members are provided in a lower case of a case serving as a base at an interval wider than that of measuring units. The measuring pipe is held by respective retaining indentations to the outside in the axial direction of measuring units by facing a left mounting member and a right mounting member that compose the mounting members. In addition, an insulating material is filled into the case so as to cover the measuring units and the measuring pipe.