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 fluid flow control device includes a valve body defining an inlet, an outlet, and a fluid flow path extending therebetween, a rotatable valve member at least partially disposed in the valve body, an attenuator operably coupled to the valve body, and a retention member disposed within the valve body. The rotatable valve member is rotatable within the fluid flow path from a shut-off position to an open position for controlling the flow of fluid through the fluid flow path. The attenuator defines an attenuator body that includes a plurality of noise-reducing apertures. The retention member is positioned against a portion of the attenuator body to retain the attenuator within the valve body.

The present invention provides a flow channel switching valve with a reduced number of components as well as a reduced weight, and a method for assembling the same. A valve shaft adapted to be coupled to a valve element so as to transmit torque of a rotary drive portion to the valve element is inserted through a vertical through-hole, which penetrates through the valve element in the direction of the rotation axis O (i.e., vertical direction), and through a fit-insertion hole provided in a valve body. Then, a drive gear that forms the rotary drive portion is fixed to the upper coupling portion of the valve shaft protruding from the fit-insertion hole so that the valve shaft is rotatably supported with respect to the valve body.

Embodiments of the invention provide a trim arrangement for a ball valve. The trim arrangement can include a first seat assembly having a first seat, a threaded collar, and a biasing element. The first seat can be in contact with a first side of a ball element, and the threaded collar can be threadably coupled to the first seat and can be in engagement with the biasing element. The trim arrangement further includes a second seat assembly having a second seat in contact with a second side of the ball element. The threaded collar can have a profile that is configured to non-rotatably and slidably engage a corresponding profile of a collar bore of the valve body to prevent rotation of the threaded collar relative to the valve body.

A valve includes a valve body; a valve sealing element positioned inside the valve body; a stem positioned inside the stem bore of the valve body and engaged with the valve sealing element; and a cap fixed with respect to the stem, the cap comprising a mounting end and an actuating end; the mounting end defining a stem engagement cavity; the actuating end distal from the mounting end; the cap defining a first side surface, a second side surface, and a top surface; the cap defining a window in a position between the mounting end and the actuating end; the window defined in and extending from one of the first side surface, the second side surface, and the top surface; and the window exposing a surface of the stem but preventing passage of the stem through the window.

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 valve apparatus comprises a housing defining a flowpath extending between a valve inlet and a valve outlet and an access port formed in a wall of the housing separately from the valve inlet and the valve outlet to provide access to the flowpath at a location which is intermediate the valve inlet and valve outlet. A valve mechanism is mounted within the flowpath, wherein the valve mechanism in insertable through the access port.

To be accompanied, when published, with FIG. 1.

Embodiments of the invention provide a trim arrangement for a ball valve. The trim arrangement includes a first seat assembly having a first seat, a threaded collar, and a biasing element. The first seat is in contact with a first side of a ball element, and the threaded collar is threadably coupled to the first seat and in engagement with the biasing element. The trim arrangement further includes a second seat assembly having a second seat in contact with a second side of the ball element. The biasing element biases the first seat toward the first side of the ball element to provide a contact stress between the first seat and the first side of the ball element and the second seat and the second side of the ball element. The contact stress provided by the biasing element is adjustable by rotating the first seat.

A plumbing device including a body with at least one inlet and at least one outlet and a number of fluid control mechanisms, wherein each fluid control mechanism performs a different fluid control function compared to the other fluid control mechanisms and wherein the body houses the fluid control mechanisms.

A flow control valve including a main valve and a pilot valve for controlling a piston of the main valve. The valve maybe controlled through a control system based upon measured pressures or temperatures in a system supplied or controlled by the valve. The valve may be operated as a pressure independent control valve, using pressure measurement from a supply line and exit line or return line of a hydronic HVAC system as inputs to the control system, which is operable to maintain a constant pressure drop across the system, or the valve may be operated as a temperature independent control valve, using temperature measurements from a supply line and exit line or return line of a hydronic HVAC system as inputs to the control system which is operable to maintain a constant temperature drop across the system.