Abstract: A wash water processing apparatus of reusing wash water includes: a washing processing part washing a subject to be washed; a wash water accommodation part into which processed water used in a washing process in the washing processing part is once accommodated; a sterilization and purification unit causing, while acting with an ozone supply function, ozone water to be contained in the processed water flowing through the wash water accommodation part in a circular manner; and a filtration mechanism part configured to include a filter and an ion-exchange resin and sequentially filtrating the processed water to be reused as wash water in the washing processing part, as the ozone water is supplied as the processed water is mixed to dilute an ozone concentration in the wash water accommodation part. In a state where the ozone concentration is adjusted, the processed water is passed through the filter and the ion-exchange resin.

Abstract: The present invention is to provide a valve state grasping system that can be easily retrofitted to any of various existing or operating valves (rotary valves) and actuators, and in particular, even facilities to which commercial power is not supplied, and allows detailed and accurate state grasping and diagnosis or failure prediction for the valve or actuator. The valve state grasping system is configured to perform, based on angular velocity data of a valve stem which opens and closes the valve, state monitoring, diagnosis, and life prediction of this valve. To the valve stem, a monitoring unit having at least a semiconductor-type gyro sensor is attachably and detachably fixed. The angular velocity data includes angular velocity data acquired from this monitoring unit in accordance with a rotational motion of a valve body from being fully open or fully closed to fully closed or fully open.

Abstract: A valve state grasping system that can be easily retrofitted to any of various existing or operating valves (rotary valves) and actuators, and in particular, even facilities to which commercial power is not supplied, and allows detailed and accurate state grasping and diagnosis or failure prediction for the valve or actuator. The valve state grasping system is configured to perform, based on angular velocity data of a valve stem which opens and closes the valve, state monitoring, diagnosis, and life prediction of this valve. To the valve stem, a monitoring unit having at least a semiconductor-type gyro sensor is attachably and detachably fixed. The angular velocity data includes angular velocity data acquired from this monitoring unit in accordance with a rotational motion of a valve body from being fully open or fully closed to fully closed or fully open.

Abstract: An eccentric butterfly valve that maintains high sealability when closed even when a high-pressure fluid is oriented in either direction of a forward flow or backflow. The valve includes a disk (23) axially supported at an eccentric position via a stem (22) inside a body (21). The disk is provided to a seat ring (24) fixed with a seat retainer (25) so as to be hermetically sealable. A flexible part is formed on an inner diameter side of the seat ring, and a spring member is mounted between the flexible part and the seat retainer. In the spring member, a load increases substantially in proportion to the magnitude of tilt of the flexible part when the disk is displaced to a seat retainer side. When the flexible part is elastically deformed, the spring member is elastically deformed in a state where contact with the seat retainer is avoided.

Abstract: A valve disk of a double eccentric butterfly valve having boss sections (3, 4) for accommodating a stem (8) and rib sections (6, 7) each extending toward outer edge portions of the valve disk in a direction intersecting a stem (8) from the boss sections are provided on a surface on one side of a disc (2), and each of the ribs respectively excluding the boss sections is provided such that a height from a surface (2a) of the disc on the side on which a distance to an end on the edge portion side of the valve disk is longer than that on the side on which a distance to an end on the edge portion side of the valve disk is short when the heights are respectively compared at positions spaced an equal distance apart from a stem center axis (20), and the butterfly valve.

Abstract: A centric butterfly valve (1) in which top and bottom boss surfaces (19, 29) are formed to be spherical, an outer peripheral end of the blade portion of the valve disk (24) is formed to be an M-shaped section part (29) with round-shaped apex parts (27) and a round-shaped valley part (28) smoothly linked, and the centric butterfly valve has a valve disk (3) having an extended part (41) obtained by successively and slightly extending the spherical surface of each of the top and bottom boss surfaces (19, 20) to a blade portion (40) side.

Abstract: A cryogenic globe valve that prevents a high sealing property and safety from being lost even through a large number of times of opening and closing for a cryogenic fluid and is easily maintained, although it has a simple structure. The cryogenic globe valve has an axial cylindrical portion as a long-neck structure extended to its body, in which a resin-made valve disk having a conical surface having a reduced-diameter tapered shape is attached to a lower end of an elongated stem such that the resin-made valve disk is three-dimensionally operable with respect to the stem even under an extremely low-temperature condition.

Abstract: A wedge-shaped gate valve with a branching part formed to be open in a direction orthogonal to an inner flow path of a valve box having a coupling part on both sides, and a valve disk ascends and descends from the branching part via a valve stem to open and close an annular valve seat surface. At a boundary between the coupling part and the branching part, a reinforcing thickened part having a cylindrical, cone, or truncated cone shape with a diameter gradually reducing from the branching part toward the coupling part side is provided, and the thickened part is formed by taking, as an outer shape, a cylinder, a cone, or a truncated cone with an axis P2 that is eccentric from a center line P1 of the flow path to the branching part side and is parallel to or crossing the center line P1 as a rotation axis.

Abstract: A lock device for a coupling part of a piping or valve of a raw-material container or the like, capable of preventing looseness and erroneous operation of a coupling, and having favorable stability because the device is fixed as a force is applied to a direction of additionally fastening the coupling. The lock device is provided for achieving prevention of looseness of a coupling part (4) formed of a screwed member (20) and a screwing member (21) side, and includes a clamp member (42) for additional fastening attached to the screwed member side, a clamp member (41) for positioning and fixing attached to the screwing member side, and a screw member (43) for fastening the clamp members. The clamp members are fastened with the screw member (43), thereby being fixed to the coupling part while a force is applied to a direction of additionally fastening the screwing member side.

Abstract: A centric butterfly valve (1) in which top and bottom boss surfaces (19, 29) are formed to be spherical, an outer peripheral end of the blade portion of the valve disk (24) is formed to be an M-shaped section part (29) with round-shaped apex parts (27) and a round-shaped valley part (28) smoothly linked, and the centric butterfly valve has a valve disk (3) having an extended part (41) obtained by successively and slightly extending the spherical surface of each of the top and bottom boss surfaces (19, 20) to a blade portion (40) side.

Abstract: A valve in which a backseat structure is formed at a height to easily prevent penetration of fluid with high accuracy from outside a bonnet to inhibit an increase in internal pressure. In a state in which a packing for sealing (5) is attached inside a bonnet (10) in a longneck structure, a stem (3) is axially inserted and a flow path (13) inside a valve box (2) is provided to be opened and closed by a valve body (4). The bonnet is divided into an upper bonnet (11) and a lower bonnet (12) at a position higher than a position at which a fluid flowing inside the valve box ascends in a liquid state. A backseat mechanism (42) has a fixed-side seal surface (21) formed on a lower end side of the upper bonnet and a movable-side seal surface (41) on an outer peripheral surface of the stem.

Abstract: A wash water processing method and a wash water processing apparatus in a simple structure capable of effectively decomposing organic matters and killing bacteria contained in wash water, extending the life of a filter of a filtration apparatus and an ion-exchange resin and, furthermore, extending a bacteria-killing/washing interval of a washing processing part. In the wash water processing apparatus (11) and the washing method, a wash water accommodation part (12) into which processed water processed in a washing processing part (10) flows and a filtration mechanism part (14) are connected and the wash water accommodation part has connected in a circulatable manner thereto an inflow flow path and an outflow flow path of a sterilization and purification unit which organically couples respective functions of an ozone supply part which supplies ozone, an ultraviolet irradiation part which irradiates with ultraviolet rays, and a photocatalysis part which causes a photocatalyst to act.

Abstract: An apparatus for valve-seat inspection and pressure-resistance inspection for valves which can successively perform a valve-seat inspection and a pressure-resistance inspection on a valve and can quickly and correctly inspect valves, by highly-accurately detecting a leak of search gas in a substantially fixed time; a method for these inspections; and a valve. The apparatus allows a valve-seat leak and pressure-resistance inspection of a test valve, includes a clamp mounting mechanism that fixes the test valve in an inspection chamber, an inspection space adjustment mechanism that adjusts a volumetric capacity of an inspection space S of the chamber, and a gas sensor for valve-seat inspection arranged in a flow path of the test valve and a gas sensor provided in the chamber for a pressure-resistance inspection of the valve, in which the volumetric capacity of the inspection space S of the chamber is adjusted to be substantially fixed.

Abstract: Provided are a pressure-resistance inspection apparatus for valves and its inspection method, and hydrogen gas detection unit capable of detecting external leakage and specifying its position of occurrence even for valves with different sizes and shapes by performing pressure-resistance inspection with a simple structure quickly with high accuracy while preventing errors in test results, without requiring post-treatment for the valves, and also capable of mass processing by automation. Provided are a cover 2 in which a test valve 1 is accommodated in a state of being isolated from outside and a sensor 22 inside this cover 2 and capable of moving to a position close to an outer surface of the test valve 1 filled with a search gas. This sensor 22 is a gas sensor capable of detecting external leakage of the search gas from the test valve 1.

Abstract: A trunnion-type ball valve, a valve seal structure, and a valve packing in which, a seal surface pressure of a tip outer peripheral region is improved. A ball (3) provided inside a body (2) is rotatably provided via upper and lower stems (4 and 5) and is sealed with a ball seat (6). The trunnion-type ball valve has a packing attached between an outer periphery step part provided at a rear part of the ball seat and the body and a pressing mechanism by which the packing is pressed to a ball direction, and is provided with a contact surface to be contacted with a step part surface of the outer periphery step part on a tip outer diameter side of the packing and a space provided between the packing and the step part surface of the outer periphery step part on a tip inner diameter side of the packing.

Abstract: To contribute to an improvement in a dezincification resistance of a copper alloy, focusing attention on a relation between a dezincification resistance of a copper alloy and the crystal grain size of an ? phase, and the specific object is to provide a method of producing a hot forged product using a lead-free brass capable of ensuring corrosion resistances such as a prescribed dezincification resistance and the like even at sites of different thickness and shape, a hot forged product, and a wetted product such as a valve and a water faucet, molded using the same. A method of producing a hot forged product using a brass, comprising heat-treating a raw material to be subjected to forging work using a brass having a composition containing at least 59.2 to 63.0% by mass of Cu, 1.00 to 2.00% by mass of Sn and 0.05 to 0.25% by mass of Pb and containing the residue composed of Zn and inevitable impurities at a heating rate of 5.2° C./s or more from 350° C. until reaching the forging temperature.

Abstract: A butterfly-valve seat ring and fixing structure of the same, and an eccentric-type butterfly valve in which, the butterfly-valve seat ring has a flexible part (31) with a predetermined material thickness integrally and extendedly provided on one side surface of an inner diameter of a ring-shaped base body part (30) having a substantially rectangular shape in section and has a fixing part (32) integrally and extendedly provided on one side surface of an outer diameter of the base body part, has a recessed-shaped space part (40) provided between an outer circumferential surface (36) of the flexible part and an inner circumferential surface (37) of the fixing part, and has a seal contact part (35) provided to project at an inner diameter position of the flexible part. The seal contact part is positioned on an inner circumferential surface of the flexible part rather than a depth-side position of the space part.

Abstract: A structure and method for fastening a ball seat for a ball valve, a trunnion ball valve, and a hydrogen station using the ball valve, in which a stepped part is positioned medially in each of inner and outer peripheral surfaces of a resin-made annular seat body, with a seat part on a tip side and a holding part on a rear end side; an attachment groove defined by inner and outer cylinders having a ring-shaped swaging edge part at a tip of a seat retainer; the holding part being attached to the attachment groove; and the swaging edge part of the inner and outer cylinders being in contact with and fixed by being swaged to the stepped part so as to cause the seat part to protrude farther than a swaging position.

Abstract: Provided are a pressure-resistance inspection apparatus for valves and its inspection method, and hydrogen gas detection unit capable of detecting external leakage and specifying its position of occurrence even for valves with different sizes and shapes by performing pressure-resistance inspection with a simple structure quickly with high accuracy while preventing errors in test results, without requiring post-treatment for the valves, and also capable of mass processing by automation. Provided are a cover 2 in which a test valve 1 is accommodated in a state of being isolated from outside and a sensor 22 inside this cover 2 and capable of moving to a position close to an outer surface of the test valve 1 filled with a search gas. This sensor 22 is a gas sensor capable of detecting external leakage of the search gas from the test valve 1.