A pin-fastening structure includes a first shaft portion provided in a valve shaft; a cylindrical portion into which the first shaft portion is fitted, the cylindrical portion being provided in a valve body; and a connecting pin that passes through both the first shaft portion and the cylindrical portion in a state in which the first shaft portion is fitted into the cylindrical portion and that restricts relative movement of the first shaft portion and the cylindrical portion in an axial direction. The first shaft portion has a first end surface perpendicular to the axis of the valve shaft. The cylindrical portion has second end surfaces perpendicular to the axis of the valve body. The first shaft portion and the cylindrical portion are fastened by the connecting pin in a state in which the first end surface and the second end surfaces are in contact with each other.

A compact manifold ball valve having a valve body, valve ball, valve stem and two piece retainer system; the valve body including a valve chamber having first and second ends, and a first flow passage intersecting the valve chamber and valve ball. The valve ball can be trunnion supported and include pair of movable seat assemblies that can be used to seal the valve ball to the valve body. A two piece retainer can be used to hold in place the valve components, the two piece retainer including a first section which moves only linearly along with a second retainer piece that is a threaded ring that rotationally locks in place the first section of the two piece retainer. The two pieces of the retainer can be symmetrically located about the centerline of the flow passage of the valve body.

A valve includes a body having a first end, a second end opposite the first end, and a throughbore extending from the first end to the second end along a central axis, a valve element positioned within the throughbore for selectably isolating fluid flow through the throughbore, a seal end cap including a flange and a neck, wherein the neck is inserted into the throughbore from the second end of the body to engage with the valve element, and a hub end cap including a mounting flange engaged with the flange of the seal end cap, wherein the flange of the seal end cap is engaged with the second end of the body whereby the flange of the seal end cap is compressed between the second end of the body and the mounting flange of seal end cap.

A ball valve sealing arrangement includes a ball element, and a ball seal assembly to support the ball element. The ball seal assembly includes an O-ring and a ball seat, with the ball seat having an O-ring gland in one side and a recess in an opposite side, the O-ring gland to receive the O-ring and the recess to receive the ball element, and an outer dimension of the O-ring gland being within an outer dimension of the recess.

A no-crimp valve assembly employs a fitting which has an enlarged outer portion and a coaxial inner portion of reduced diameter. An axial groove is formed between the outer portion and the inner portion for receiving the end of a polymer pipe. A nut retainably receives a split ferrule. The split ferrule has a serrated inner surface. The nut is threaded to the outer threaded surface of the outer portion and the ferrule is compressed against the outer surface adjacent the end of the pipe to form a fluid tight connection and the inner surface of the pipe engages the reduced surface of the inner portion. In some embodiments, the inner portion carries one or more sealing rings or has a serrated or stepped inner surface which engages the inside surface of the pipe.

The present disclosure provides a pipe coupling that includes a coupling body, a first pack joint nut, and first and second sleeves. The coupling body is made of a first metal material and the first pack joint nut is made of a second metal material. The first pack joint nut is configured to receive a portion of a first pipe. The pipe is made of a dissimilar metal material to the first and second metal materials of the coupling body and the first pack joint nut, respectively. The first sleeve is configured to line at least a portion of an inner periphery of the coupling body. The second sleeve is configured to line at least a portion of an inner periphery of the first pack joint nut. The first and second sleeves are made of non-metallic materials, and serve as physical non-metallic barriers between the first/second metal materials of the coupling/first pack joint nut, and the dissimilar metal material of the first pipe.

A ball valve assembly includes a duct with a central passage for the flow of fluids. A ball valve is rotatably mounted within the duct. The ball valve has a through bore selectively alignable in an operational position with the central passage to allow flow through the valve assembly. A lateral opening is provided in the duct. A handle attached to the ball valve extends through the lateral opening such that it is accessible from outside the duct to allow rotation of the ball valve. The ball valve, handle and duct are sized so that the ball valve and handle together are insertable into one end of the duct in a first orientation to an intermediate position, from which position and orientation the ball valve and handle together can be manipulated without the ball valve leaving the duct to a final position with a second orientation in which the handle extends out through the lateral opening and the ball valve is in its operational position.

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.

A split body, rotary C gate, removeable stem vacuum valve using an input assembly with handle extensions that allow for hand movement of the incoming pipe to access an inner aperture body with a curved sealing face that directly seals to a C shaped gasketless gate that can be rotated into and out of the inner body aperture for easy cleaning. The gasketless gate is held in position using gate axles with an outer axle stem connected to a polygon lower body that mates into a matching polygon aperture on the gasketless gate. The middle valve assembly's gasketless housing body defines upper and lower axle washer pockets for locating the axles for proper operation and simple axle pins for securing the axles in position.

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.