Abstract: A vertical fan unit includes a cabinet, a fan unit and a heating and cooling coil. A piping and valve assembly connects the heating and cooling coil to a four-pipe vertical riser. Shut-off ball valves are connected to respective hot and cold supply pipes of the vertical riser out of the path of air flowing through the heating and cooling coil. Hot and cold return valve assemblies include control ball valves connected to respective return pipes of the four pipe vertical riser and positioned adjacent the side wall out of the path of air flowing through the heating and cooling coil. A cable connects each temperature probe of the shut-off ball valves with respective BTU meters mounted at the control ball valves.

Abstract: 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.

Abstract: 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.

Abstract: A coupling includes a socket housing that receives a plug. A plunger operates as a fluid valve and side orifices in the plunger allow fluid flow therethrough and is longitudinally movable from a forward sealed position where a sealing ring is in sealed engagement with a fluid channel to prevent fluid flow, and a retracted, unsealed position engaging a connected plug allowing fluid flow into the tubular plunger via the side orifices into the fluid channel. A plunger spring as a preferred wave spring engages the first end of the plunger and biases the plunger into the forward sealed position. First and second conical gaskets at the plunger spring allow the plunger spring as a preferred wave spring, plunger, and any connected plug to rotate within the socket housing and minimize torsion forces and stress on the plunger spring and within the socket housing.

Abstract: A coupling includes a socket housing that receives a plug. A plunger operates as a fluid valve and side orifices in the plunger allow fluid flow therethrough and is longitudinally movable from a forward sealed position where a sealing ring is in sealed engagement with a fluid channel to prevent fluid flow, and a retracted, unsealed position engaging a connected plug allowing fluid flow into the tubular plunger via the side orifices into the fluid channel. A plunger spring as a preferred wave spring engages the first end of the plunger and biases the plunger into the forward sealed position. First and second conical gaskets at the plunger spring allow the plunger spring as a preferred wave spring, plunger, and any connected plug to rotate within the socket housing and minimize torsion forces and stress on the plunger spring and within the socket housing.

Abstract: A fluid-flow measuring ball valve includes a housing and a ball having an orifice. The ball is moved between an open position allowing fluid flow through the orifice and a closed position preventing fluid flow. A first ultrasonic transducer is positioned in the housing upstream of the ball. A second ultrasonic transducer is positioned in the housing downstream of the ball and both are aligned to send and receive pulses. First and second acoustic reflectors are aligned with the transducers to transmit and reflect ultrasonic signals in at least one direction through the ball orifice when the ball is in an open position. The controller determines the fluid velocity based on measured speed of sound and calculates the volume of fluid through the orifice based on the measured fluid velocity and cross-sectional area.

Abstract: A fluid-flow measuring ball valve includes a housing and a ball having an orifice. The ball is moved between an open position allowing fluid flow through the orifice and a closed position preventing fluid flow. A first ultrasonic transducer is positioned in the housing upstream of the ball. A second ultrasonic transducer is positioned in the housing downstream of the ball and both are aligned to send and receive pulses. First and second acoustic reflectors are aligned with the transducers to transmit and reflect ultrasonic signals in at least one direction through the ball orifice when the ball is in an open position. The controller determines the fluid velocity based on measured speed of sound and calculates the volume of fluid through the orifice based on the measured fluid velocity and cross-sectional area.