[Object] A diaphragm can strongly be fixed to a flow path-side body by a diaphragm-holder, a thickness of the flow path-side body of an outer periphery of a diaphragm is thinned, and the flow path-side body is downsized.

[Solving Means] A diaphragm-holder abutting surface 75 is formed between a diaphragm-holder inner peripheral side ring-shaped projection 73 and a diaphragm-holder outer peripheral side ring-shaped projection 74, a diaphragm-holder inner peripheral side end surface 73s is abutted against a first fixed portion piston-side end surface 63Ap, a diaphragm-holder inner peripheral side outer peripheral surface 73o is abutted against a second fixed portion inner peripheral surface 63Bi, a diaphragm-holder outer peripheral side inner peripheral surface 74i is abutted against a body-side projection outer peripheral surface 16o, and the diaphragm-holder abutting surface 75 is abutted against the second fixed portion piston-side end surface 63Bp and a body-side projection end surface 16s.

A seal for use in a fluid control valve includes: a first, elastically deformable, plastic part; and a second plastic part configured as a hard seal element and connected to the first plastic part. The first and the second plastic parts form a seal assembly having a first frontal end configured to bear in a sealing manner on an actuatable valve body of the fluid control valve, and a second frontal end configured to bear in a sealing manner on a valve housing of the fluid control valve, wherein at least the first frontal end has a first end side having an encircling projecting bead configured to seal against the actuatable valve body.

This disclosure provides a valve seat having cladded surfaces of high hardness in order to improve the service life of valve seats. The cladded surfaces may include various materials of favorable mechanical properties for mitigating failure mechanisms known for common valve seats (e.g., having a common base metal throughout). In one example, the cladded surfaces are created using an additive manufacturing process, such as laser metal deposition. The cladded surfaces offer advantages including metallurgical bonding, localized low heat input at the laser focus (thus enabling accurate control of temperature and mitigating undesirable heat treatment effects), ductility in middle layers for increasing impact resistance, variable cladding thickness (optionally exceeding 1 mm), increased hardness by material and fusing temperature selections, corrosion resistance, modification of mechanical properties of the same selected material, and allowing for sensor embedment.

Provided is a hard particle in which Cr and W, that are quickly diffused in Mo, are present at the same time as Ni and Mn. Specifically, the hard particle contains Cr: 5% by mass to 20% by mass, W: 2% by mass to 19% by mass, Mo: 25% by mass to 40% by mass, Ni: 10% by mass to 22% by mass, Mn: 10% by mass or less, C: 2.0% by mass or less, Si: 2.0% by mass or less, and a remainder: Fe and unavoidable impurities.

A member that is a single element for controlling flow through an inflow control device, has anisotropic density configured to move the member relative to the inflow control device such that the inflow control device allows, fully blocks, or partially blocks flow from a zone to a production string based on a density of a fluid flowing into the inflow control device from the zone.

Various embodiments of an antimicrobial insert for a stopcock medical connector are provided. More specifically, the present invention relates to an antimicrobial insert that is seated within at least a portion of the annular bore of the connector's tap, wherein fluid within the annular bore contacts the antimicrobial insert, thereby preventing microbial proliferation within the stopcock medical connector.

A valve having a flow trim assembly that can be quickly and efficiently removed and repaired or replaced. A body section having a central through bore that defines an inlet, an inner chamber or space, and two selectable outlets. Further the selectable outlets can direct flow in either a 90 degree “angle” orientation or at straight “in-line” orientation. An actuator stem extends into the inner chamber. A first (movable) trim member is attached to the rotator, and can be selectively rotated relative to a second (fixed) trim member. The first and second trim members cooperate to adjust flow opening through the valve. A valve bonnet that allows direct coupling of an actuator to the valve.

A ball for a ball valve, wherein the ball comprises a substrate of metal having surface modified portions to act as seating surfaces for a seat of the ball valve; and a seat ring for a ball valve, wherein the seat ring comprises a substrate of metal having a surface modified portion to act as a seating surface for a ball of the ball valve.

A kelly valve for placement in a tubular drillstring has an inner cage, which holds a valve ball, lower valve ball seat and other valve components. A valve stem connected to the valve ball extends through a valve stem sleeve, positioned in an opening in the wall of the main body of the kelly valve. A thrust bearing of a low friction material, preferably of polyether ether ketone (PEEK), is positioned between the valve stem and the valve stem sleeve. A port in the valve ball seat permits pressure below the kelly valve to bypass a seal and act on the inside of the valve ball. A circumferential notch in the valve ball seat accommodates a circular spring, and prevents complete compression of the spring when the valve ball seat contacts an interior shoulder in the inner cage.

[Object] The present invention provides a flaw rate control valve and a producing method of the flow rate control valve in which cross-linked PTFE having excellent abrasion resistance and capable of reducing a dust-generating amount is used only on a contact portion between a valve body and a valve seat.

[Solving Means] According to a flow rate control valve 1 of the invention, a flow path-side body 10 and a valve body 40 are made of fluorine-based resin composed of PFA or PTFE, and an annular or circular seal member 81 made of cross-linked PTFE is joined to a valve body-side abutting portion 40a having a valve seat 13 against which the valve body 40 abuts and to a valve seat-side abutting portion 13a of the valve seat 13 against which the valve body 40 abuts.