Abstract: A gasket includes a first slope at a first axial end. The fluid device includes a second slope that contacts the first slope. The first slope and the second slope have different gradients. The first slope allows at least the first axial end to be deformed along the second slope. The first slope contacts the second slope with a gradient that varies depending on a gradient of the second slope to seal a gap between the first slope and the second slope.

Abstract: A structure allowing a gasket to be mounted on a fluid device is provided. The gasket includes a ring with a first annular slope at a first axial end. The fluid device includes an inner sleeve with a second annular slope and an outer sleeve radially outside the inner sleeve. An outer periphery of the ring includes an annular contact face that contacts the outer sleeve and an annular non-contact face radially separated from the outer sleeve. The first annular slope contacts an outer periphery of the second slope.

Abstract: A structure allowing a gasket to be mounted on a fluid device is provided. The gasket includes an annular attaching portion that has a first slope at an axial end. The fluid device includes an annular attached portion with a second slope that contacts the first slope. The first slope at least partially includes a contact area that contacts the second slope to seal a gap between the first slope and the second slope. The contact area has an annular bulge protruding toward the second slope in contrast to other portions of the first slope so that the bulge is the earliest contact portion with the second slope when the contact area is brought into contact with the second slope.

Abstract: A structure allowing a gasket to be mounted on a fluid device is provided. The gasket includes an annular attaching portion that has a first slope at an axial end. The fluid device includes an annular attached portion with a second slope that contacts the first slope. The first slope at least partially includes two or more pressing areas, which are partitioned by annular steps. The second slope at least partially includes two or more pressed areas, which are partitioned by annular steps to fit the steps between the pressing areas.

Abstract: A resin tube fitting prevents backwaters between its body and inner ring. The fitting includes a body, an inner ring, and a union nut. The body has main, outer, and inner sleeves, and a groove. The inner ring has a cylinder, an insert, and outer and inner protrusions. The union nut has a body and a pressing member. The inner sleeve has a through hole serving as a channel. The inner protrusion extends from the cylinder to an axial direction to contact the inner sleeve. The inner protrusion has a through hole serving as another channel connected with the inner sleeve's channel. The tip of the inner protrusion has an inner diameter not less than the minimum inner diameter of the inner sleeve. An inner peripheral surface is located at the inner periphery of the inner protrusion and causes it to reduce in inner diameter toward another axial direction.

Abstract: A structure of a resin-made pipe joint includes a joint body having a cylindrical shape, a sleeve having a cylindrical press-inserting portion which is press-insertable into the joint body and a cylindrical coupling portion which is press-insertable into a tube, and a fastening member for fixing the tube which is in a state where the coupling portion is press-inserted, to the joint body through the sleeve. The sleeve contains a sealing surface in an outer circumferential surface of the press-inserting portion, the sealing surface being closely contactable with an inner circumferential surface of the joint body, and comprises a non-contacting surface between the press-inserting portion and the coupling portion, the non-contacting surface forming a space with respect to the inner circumferential surface of the joint body, when the sealing surface is closely contacted with the inner circumferential surface of the joint body.

Abstract: A laminated plate has a metallic conductive layer layered on one surface or each surface of an insulating substrate, the insulating substrate contains a fluorine resin and a polymer of an alkoxysilane, and the fluorine resin is dispersed in the polymer of the alkoxysilane.

Abstract: To provide a gland packing capable of suppressing a fluid from permeating into a packing body or leaking from the packing body through a contact surface between a laminating member and a protrusion of the packing body. The gland packing includes an annular packing body (21) which is formed by winding an expanded graphite tape material in a spiral shape and a laminating member (22) that is bonded to an axial end surface of the packing body (21) and is formed of an annular expanded graphite sheet material, the axial end surface of the packing body (21) being provided with a protrusion (24) facing and contacting an inner peripheral portion or an outer peripheral portion of the laminating member (22) in the radial direction, in which a contact surface (27) between the protrusion (24) and the laminating member (22) is formed so that a radius changes in at least a part in the axial direction.

Abstract: A bellows pump device includes first and second bellows mounted on a pump head so as to be expandable/contractible independently of each other and configured to suck a fluid from a suction passage thereinto by expansion thereof and discharge the fluid therefrom to a discharge passage by contraction thereof. First and second air cylinder portions are configured to respectively cause the first and second bellows to perform expansion/contraction operation. First and second detection devices are configured to detect expanded/contracted states of the first and second bellows, respectively. A control unit is configured to control drive of the first and second air cylinder portions on the basis of each of detection signals of the first and second detection devices such that, before one bellows comes into a most contracted state, the other bellows is caused to contract from a most expanded state.

Abstract: A resin tube fitting has a body with a sleeve allowing the longitudinal end of the tube to be put therein, an inner ring with a press-in portion configured to be pressed in the longitudinal end of the tube, and a union nut with a connector configured to be screwed to an outer periphery of the body to allow the longitudinal end of the tube to be put radially between the connector and the press-in portion. The inner ring and the union nut are made of resin, which has a property of contracting in response to change in ambient temperature. The radial contraction rate of the connector is higher by 0.05% or more than that of the press-in portion of the inner ring.

Abstract: A diaphragm pump includes: a housing; a diaphragm; an actuator configured to reciprocate the diaphragm based on a previously selected operation mode out of a plurality of operation modes; a setting device configured to set and send an operation mode and operating conditions; and a control device configured to receive the operation mode and the operating conditions from the setting device, and control the actuator to move the diaphragm forward or backward in accordance with the operation mode and the operating conditions received from the setting device. The plurality of operation modes include a normal operation mode in which the actuator is driven to perform a series of a suction process to suck a fluid and a discharge process to discharge the sucked fluid, and a partial operation mode in which the actuator is driven to perform the series of processes partially.

Abstract: A mechanical seal which defines an annular space formed between a case body and a shaft body is included. The mechanical seal includes: a first sealing ring having a first seal surface; a second sealing ring having a second seal surface which slidably contacts with the first seal surface; and a plurality of coil springs provided along the first sealing ring in a circumferential direction and configured to apply axial forces to the first sealing ring to press the first seal surface against the second seal surface. The plurality of coil springs are divided into a plurality of groups, and first regions in each of which occurring distortion is increased by the axial forces of the coil springs that belong to the group and second regions in each of which distortion is smaller than that in each first region are present alternately along the circumferential direction in the first sealing ring.

Abstract: A resin tube fitting has: a body with an outer sleeve; an inner ring including an insert portion insertable into the outer sleeve to contact the outer sleeve radially, and a press-in portion configured to be pressed into a longitudinal end of the tube; and a union nut configured to be engageable with the body. The body and the inner ring are made of resin, which has a property of contracting in response to change in ambient temperature. A radial contraction rate of the outer sleeve of the body is designed to be higher by 0.09% or more than that of the insert portion of the inner ring.

Abstract: A method for manufacturing a resin pipe joint with a joint body includes the following steps. Preparing a mold and a supply device configured to supply molten resin. The mold includes a first mold for an outer shape of the joint body and a second mold for an inner shape of the joint body. Combining the second mold with the first mold to form a cavity, into which the molten resin is injectable, inside the mold. Supplying the molten resin to the cavity in the mold. Solidifying the molten resin in the cavity after stop of the supply of the molten resin from the supply device. The second mold has a gap that connects the cavity to a discharge space outside the cavity and allows gas to flow.

Abstract: A reciprocating pump includes: a housing with a suction port and a discharge port; a reciprocated member disposed in the housing to form a pump chamber and reciprocable such that fluid is sucked into the pump chamber through the suction port and then discharged from the pump chamber through the discharge port; an actuator configured to reciprocate the reciprocated member; and a pressure gauge with a pressure receiving portion, configured to detect pressure of the fluid in the pump chamber through the pressure receiving portion, and coupled to the reciprocated member to be reciprocated by the actuator integrally with the reciprocated member.

Abstract: In order to manufacture a yarn in which filler materials are loaded into a tubular member, the method of manufacturing a yarn has a step of knitting a wire material to form the tubular member. In the step of knitting the wire material, knitting of the wire material is advanced by a plurality of knitting needles, which are placed substantially concentrically about a rotation axis, while revolvingly moving the knitting needles about the rotation axis. When a stitch is to be formed by the wire material, the wire material is prepared so that an arcuate loop portion, which defines a part of the external shape of the stitch, is expanded in a direction which, in a state where the tubular member is developed, is inclined with respect to a straight line that extends in the axial direction of the tubular member.

Abstract: Provided is a bellows pump device that is able to reduce fall of a discharge pressure of a transport fluid during contraction operation of a bellows. The bellows pump device supplies pressurized air to a hermetic discharge-side air chamber thereby to cause a bellows disposed within the discharge-side air chamber to perform contraction operation to discharge a transport fluid, and discharges the pressurized air from the discharge-side air chamber thereby to cause the bellows to perform expansion operation to suck the transport fluid. The bellows pump device includes an electropneumatic regulator configured to adjust an air pressure of the pressurized air to be supplied to the discharge-side air chamber, such that the air pressure is increased so as to correspond to a contraction characteristic of the bellows during the contraction operation of the bellows.

Abstract: A reciprocating pump includes: a housing with a fluid channel that includes a pump chamber; a reciprocated member that is disposed in the housing to form the pump chamber, and reciprocable for suction and discharge of fluid; an actuator configured to reciprocate the reciprocated member; and a pressure gauge with a pressure receiving portion, configured to detect pressure of the fluid in the fluid channel via the pressure receiving portion. The housing includes an inner wall facing the fluid channel, and a flexible, membranous portion placed continuously next to the inner wall to face the fluid channel. The pressure gauge is attached to the housing such that the membranous portion is sandwiched between the pressure receiving portion and the fluid channel.

Abstract: An end surface-contact mechanical seal providing a shielding seal between a liquid area (A) and an atmospheric area (B) by a relative rotation, while in a contact state, of opposing end surfaces (4a, 6a) of a case-side sealing ring (4), which is fixed to a seal case, and a ceramic shaft-side sealing ring (6), which is held on the sleeve (22) of a rotary shaft (2). A rubber O-ring (5) is installed between a sealing ring-side seal surface (63a), which is formed on the inner peripheral surface of the shaft-side sealing ring (6), and a shaft-side seal surface (22c), which is formed on the outer peripheral surface of the sleeve (22), so as to be relatively movable in the axial direction while sealing the surfaces. A diamond film (14a) is formed over the entire surface of the sealing ring-side seal surface (63a).

Abstract: A resin-made pipe joint with enhanced sealing property between a joint body and sleeve. A sealing portion which seals between an inner circumferential surface of an inserting portion of a sleeve and an outer circumferential surface of an inner cylinder portion is formed by press-inserting an inserting portion into a groove portion of the joint body. When the inserting portion is press-inserted into the groove portion, a space is formed between a body cylinder portion located opposite to an opening portion of the groove portion in the axial direction, and the projection end of the inserting portion. After completing press insertion of the inserting portion into the groove portion, in a section including axis of the inner cylinder portion, a region in the outer circumferential surface of the inner cylinder portion facing the space forms an angle of 5° to 15° to the axis of the inner cylinder portion.