An angle ball valve includes a housing, valve chamber, and first and second fluid ports. A hollow ball is disposed within the valve chamber and in abutment to sealing elements, and includes a first surface opening and second surface opening and is rotatable within the valve chamber about an axis of ball rotation between open and closed ball valve positions. A first sensor orifice is formed within the valve housing coaxial with the axis of ball rotation and receives a sensor, which extends into a second sensor orifice of the ball. A valve stem is operatively connected to the ball and extends along the axis of ball rotation opposite the first sensor orifice. The valve stem rotates the ball into and out of open and closed ball valve positions.

A ball valve assembly configured to be controlled remotely can be included in a system for fracking a well. Ball valve assemblies of the present disclosure can include a main body having a bore for transmitting fluid therethrough and a ball disposed within the main body and having a throughbore, the ball being hydraulically rotatable within the main body for rotation between an open state and a closed state of the ball. Such ball valve assemblies can include other components such as one or more wipers on and in contact with an external surface of the ball throughout rotational operations of the ball to minimize debris from interfering with the valve, and/or pressure equalizing valves to adjust fluid pressure above and below the ball of the assembly, for example. Further, the ball vale assembly can be adapted to operate more safely by including a directional lock plate.

A rotary valve is provided for use in highly corrosive and abrasive applications. The valve includes a valve body defining an inlet, an outlet, and a valve interior in fluid communication with the inlet and the outlet. The valve also includes a ball element disposed within the valve interior via a valve stem to control fluid flow through the valve, and a valve seat to sealingly engage the ball element. The ball element includes a body having an outside portion, a bore disposed through a center portion of the body, and at least one brace disposed between the bore and the outside portion to strengthen the ball element during highly corrosive and abrasive applications of the valve.

A combination control and check valve assembly for a wet piping system includes a control valve in the form of a ball valve and a one-way check valve mounted within the flow pathway of the ball valve. A valve actuation assembly is mounted to the valve assembly to selectively rotate the ball valve between the open and closed positions thereof. The valve actuation assembly is mounted to a first side of the valve assembly and rotationally fixed to the ball, whereby rotation of the valve actuation assembly rotates the ball between the open and closed positions. A side opening is formed in a second side of the valve assembly that is angularly spaced from the first side. The side opening is positioned to align with the fluid flow pathway of the ball valve in the closed position thereof to provide access to the check valve.

A valve including a surface movably engaged with another surface. A coating is on the surface. The surface can have a CoF of less than 0.1; a hardness in excess of 1,200 HVN; impermeability to liquids at pressures ranging from 15 and 20,000 psi; a surface finish of 63 or less; and a thickness ranging from 0.5 to 20 mils.

There is provided a method for depositing a TiO.sub.2Cr.sub.2O.sub.3 ceramic coating on a substrate. The method includes mixing a powder of sprayable nanostructured titanium(IV) oxide (n-TiO.sub.2) and a powder of chromium(III) oxide (Cr.sub.2O.sub.3), thereby obtaining a n-TiO.sub.2Cr.sub.2O.sub.3 powder blend. The method also includes thermal spraying particles of the n-TiO.sub.2Cr.sub.2O.sub.3 powder blend on the substrate at an in-flight particle temperature of or greater than 2350 C. and a particle in-flight velocity of or greater than 350 m/s, thereby obtaining a coated substrate.

A piping article is provided that comprises a piping component comprising a piping body with an open end. The piping component is formed of an alloy comprising from about 12% to about 16% zinc, from about 0.5% to about 2.0% silicon, and a balance of copper (by weight). The alloy comprises an ultimate tensile strength of from about 200 N/mm.sup.2 to about 300 N/mm.sup.2, a yield strength of from about 75 N/mm.sup.2 to about 225 N/mm.sup.2, and an elongation of from about 15% to about 60%.

A ball valve assembly configured to be controlled remotely can be included in a system for fracking a well. Ball valve assemblies of the present disclosure can include a main body having a bore for transmitting fluid therethrough and a ball disposed within the main body and having a throughbore, the ball being hydraulically rotatable within the main body for rotation between an open state and a closed state of the ball. Such ball valve assemblies can include other components such as one or more wipers on and in contact with an external surface of the ball throughout rotational operations of the ball to minimize debris from interfering with the valve, and/or pressure equalizing valves to adjust fluid pressure above and below the ball of the assembly, for example. Further, the ball vale assembly can be adapted to operate more safely by including a directional lock plate.

A method of sealing a metal retainer to a metal valve body that includes the steps of applying a soldering paste in a predetermined amount to the threads of a threaded retainer and threading the retainer into the threads of a threaded opening in the valve. The retainer is heated to a temperature sufficient to liquefy and disperse the soldering paste into spaces between the threads of the retainer and the threads of the opening in the valve to thereby achieve an adhesive seal.

A ball for use within a ball valve includes an outer wall, an inner wall that defines a central bore, and a lattice structure positioned within an interior space defined between the outer wall and the inner wall. The ball may include one or more flow conditioners positioned within the central bore. The ball may be formed via an additive manufacturing process.