Abstract: A compact differential-pressure flow meter with reduced wiring is provided. The differential-pressure flow meter has first and second pressure sensors 12A and 12B fixed to a base member 14 on upstream and downstream sides of an orifice member 11 along a flow channel to determine a flow rate based on a pressure difference measured between the two sides of the orifice member 11 by the pressure sensors. The differential-pressure flow meter includes specific control boards disposed near pressure-sensing parts installed in the respective pressure-sensing device and a main control board disposed in a board installation space formed inside the base member. The specific control boards are connected to the main control board with wires passing through a plurality of wiring conduits provided in housings of the pressure-sensing device, and external wiring are connected to one of the specific control boards or to the main control board.

Abstract: A highly versatile flow-rate controller that is easy to handle and a regulator unit and a valve unit used for the same are provided. The flow-rate controller includes a regulator unit having a regulator and a first pressure sensor, a valve unit having a second pressure sensor and a flow-rate control valve, and an orifice unit that is connected to the regulator unit and the valve unit in a detachable manner and that has a fluid channel and an orifice that connect to the regulator unit and the valve unit.

Abstract: Provided are a flow meter and a flow-rate control system using the same that is capable of measuring a flow rate in a minute flow-rate region with excellent measurement accuracy by preventing or suppressing the generation of bubbles and in which accumulation of the fluid and the bubbles is less likely to occur.

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 flow control device is provided comprising: a housing (19) including a first chamber (21) communicated with an inlet port (11) and a second chamber (22) communicated with an outlet port (12); a cylindrical portion (25), which extends in the second chamber, for communicating the first chamber with the second chamber; a valve seat (61) provided at a forward end portion (25a) of the cylindrical portion; and a valve body (32) for opening and closing the valve seat, wherein at least one of the valve seat and the valve body is made of a material, the heat deformation of which is smaller than that of material composing the cylindrical portion. Due to the foregoing, it is possible to stably adjust the flow rate of a fluid of a high temperature and pressure. A pressure chamber (29), which is communicated with the second chamber and provided with a pressure port (18), may be arranged in the housing.

Abstract: A fluid regulator that has excellent flow-rate-control response for not only pressure fluctuations at the primary side but also pressure fluctuations at the secondary side and that realizes highly accurate flow-rate control is provided.

Abstract: A valve body capable of preventing a seat part from being deformed by a stress caused by nonuniform tightening and completely closing a valve in a closed state and the valve having the valve body. The body (12) of the valve (10) formed of a resin material comprises an inside port (23) and an outside port (25) formed on the outside of the inside port (23). A seat part (12a) in contact with the tip part of a valve element (14) is formed at one end part of the inside port (23). The body is characterized in that the outside port (25) is formed on the radial outer side of the seat part (12a) approximately all around the seat part.

Abstract: A valve opening/closing handle lock mechanism provided in a valve having a manually operated valve opening/closing handle (1) is capable of maintaining the security of the valve by preventing the valve from being opened or closed by accident or with malicious intent after completion of a proper opening/closing operation of the valve by means of the handle (1). The handle lock mechanism comprises a locking cap (4) mounted on the handle (1). The locking cap (4) functions to prevent the handle (1) from being operated, extends from the handle (1) to a handle mount portion (3) of the valve so as to cover the corresponding portion of the valve with the locking cap (4), and is provided with: an opening (5) through which an end portion of the handle (1) passes outward; or, a longitudinal groove through which the end portion of the opening/closing handle (1) slidably passes outward.

Abstract: Between two heat exchangers of a first heat exchanger unit 41 and a second heat exchanger unit 42 included in an indoor heat exchanger 40, an opening 80 is arranged for introducing indoor air sucked from an air inlet 321 into an indoor blower 50 without being heat-exchanged. At the opening 80, a damper 91 is arranged for adjusting the opening rate of the opening 80, which is driven by a predetermined driving member 92. During a cooling cycle running of a freezing cycle, the opening rate of the opening 80 and/or the devices included in the freezing cycle such as a compressor, blower and expansion valve are controlled alone or in combination so that the temperature of the indoor heat exchanger 40 is lower than a dew point temperature of the indoor air.

Abstract: The flow regulating device has a shape preservation member which surrounding the environment of a flow conduit and restricts the amount of heat deformation of a housing in the housing. The shape preservation member is made from a material whose amount of heat deformation is lower than that of the housing. Furthermore, the shape preservation member includes a first metal plate member positioned on one side of the flow conduit, a second metal plate member positioned on the other side of the flow conduit, a spacer which maintains a constant interval between the first and second plate members, and bolts which fix together the first and second plate members via the spacer. In this flow regulating device, while maintaining excellent chemical resistance by making a housing from resin, accurate flow amount regulation over a wide temperature range can be performed.

Abstract: An information electronic apparatus for receiving a first request information from another information electronic apparatus connected to a network and for sending a response to the first request information, comprises a first storing unit operable to store the first request information, a generating unit operable to generate response information to the first request information, a second storing unit operable to store the generated response information, a comparing unit operable to compare the first request information stored in the first storing unit and a second request information, when the second request information is received, and a transmitting unit operable to retrieve the response information from the second storing unit and transmit the response information to the other information electronic apparatus when the comparing unit determines that the first request information and the second request information match.

Abstract: A fluid pressure regulator is compact in construction even when a fluid pressure measurement portion (6) is included, capable of performing a precise measurement of the fluid pressure in a fluid transporting line, and free from making a mistake in measurement operation. The regulator is provided with: a fluid pressure regulator portion (5); a main fluid passage (2) penetrating through a base (1) of the regulator; and, a fluid inlet port (3) and a fluid outlet port (4) each connected with a fluid transporting line to extend in opposite directions from opposite sidewalls of the base (1). The regulator portion (5) is installed in the base (1) together with the fluid pressure measurement portion (6) that is disposed in parallel to the regulator portion (5) in the base (1). The fluid pressure measurement portion (6) is preferably disposed in the side of the fluid outlet connection port (4).

Abstract: A flow control device comprises an inlet port through which fluid is supplied, an outlet port through which the fluid is delivered, a valve body which is arranged in a passage between the inlet port and the outlet port so as to open and close the passage, the flow control device further comprising a valve body guide means which urges downwardly and pulls upwardly the valve body so as to allow the fluid in the passage to flow at a flow rate which is lower than a basic control rate of the flow control device.

Abstract: A valve opening/closing handle lock mechanism provided in a valve having a manually operated valve opening/closing handle (1) is capable of maintaining the security of the valve by preventing the valve from being opened or closed by accident or with malicious intent after completion of a proper opening/closing operation of the valve by means of the handle (1). The handle lock mechanism comprises a locking cap (4) mounted on the handle (1). The locking cap (4) functions to prevent the handle (1) from being operated, extends from the handle (1) to a handle mount portion (3) of the valve so as to cover the corresponding portion of the valve with the locking cap (4), and is provided with: an opening (5) through which an end portion of the handle (1) passes outward; or, a longitudinal groove through which the end portion of the opening/closing handle (1) slidably passes outward.

Abstract: In a conventional relief valve having a valve element supported by a diaphragm, since a surface of the valve element exposed to pressure is large and an opening/closing operation of the valve element is rapidly conducted, the operation often leads to chattering and is therefore poor in stability. A relief valve of the invention is free from chattering and capable of smoothly performing the opening/closing operation of its valve element (7). The element (7) is adapted to open and close a fluid passage and disposed between: an inlet port (2) in direct communication with an upstream-side fluid passage (1); and, an outlet port (4) in direct communication with a downstream-side fluid passage (3), and is provided with a flange (8) in its upper portion. Mounted on the flange (8) is a sleeve-like bellows (6) for supporting the valve element (7).

Abstract: A replaceable orifice unit is disposed outside a pressure or a flow regulator valve, and therefore easy in maintenance, requires the smallest possible number of components, is compact in construction to save space, free from any fear that fluid impurities in a fluid circuit bank up against an upstream side of an orifice piece (2) of the unit, advantageous in replacing one type of chemicals flowing through the circuit with another type, and also advantageous in manufacturing cost. The replaceable orifice unit is constructed of a tube member (1), in which the orifice piece (2) assuming two symmetrically arranged similar triangular shapes in longitudinal cross section is fixedly mounted. Formed between vertexes of the triangle shapes is an orifice (2a). An O-ring is coaxially disposed between the tube member (1) and the orifice piece (2) to prevent the fluid from passing through therebetween.

Abstract: The flow regulating device has a shape preservation member which surrounding the environment of a flow conduit and restricts the amount of heat deformation of a housing in the housing. The shape preservation member is made from a material whose amount of heat deformation is lower than that of the housing. Furthermore, the shape preservation member includes a first metal plate member positioned on one side of the flow conduit, a second metal plate member positioned on the other side of the flow conduit, a spacer which maintains a constant interval between the first and second plate members, and bolts which fix together the first and second plate members via the spacer. In this flow regulating device, while maintaining excellent chemical resistance by making a housing from resin, accurate flow amount regulation over a wide temperature range can be performed.

Abstract: A replaceable orifice unit is disposed outside a pressure or a flow regulator valve, and therefore easy in maintenance, requires the smallest possible number of components, is compact in construction to save space, free from any fear that fluid impurities in a fluid circuit bank up against an upstream side of an orifice piece (2) of the unit, advantageous in replacing one type of chemicals flowing through the circuit with another type, and also advantageous in manufacturing cost. The replaceable orifice unit is constructed of a tube member (1), in which the orifice piece (2) assuming two symmetrically arranged similar triangular shapes in longitudinal cross section is fixedly mounted. Formed between vertexes of the triangle shapes is an orifice (2a). An O-ring is coaxially disposed between the tube member (1) and the orifice piece (2) to prevent the fluid from passing through therebetween.

Abstract: A flow regulating valve comprises a casing 1; a tube 10 which has elasticity and the both ends thereof are opened to an exterior, and is inserted and installed in the casing 1; and a pushing member 20 which changes an area of an aperture of the tube 10. The tube 10 has a double layered structure which is composed by unifying an inner tube 11 which is made of tetrafluoroethylene and an outer tube 12 which is made of teflon™ by adhesives. Furthermore, the pushing member 20 has diaphragms 21 and 22 provided in the casing so as to face with the tube 10, and a fluid pressure supplying portion 23 which moves the diaphragms to the tube side by supplying fluid pressure to one of surfaces of the diaphragms 21 and 22.

Abstract: A flow control device comprises an inlet port through which fluid is supplied, an outlet port through which the fluid is delivered, a valve body which is arranged in a passage between the inlet port and the outlet port so as to open and close the passage, the flow control device further comprising a valve body guide means which urges downwardly and pulls upwardly the valve body so as to allow the fluid in the passage to flow at a flow rate which is lower than a basic control rate of the flow control device.