Abstract: This invention relates to an electrostatically operated, normally closed micromachined flow-through microvalve device.

Abstract: When a fluid passes through a conventional elbow, turbulence is created in the fluid flow. The fluid may not stabilize and return to a laminar flow until 40-50 pipe diameters downstream. Turbulence in a piping system can cause a variety of problems such as measurement error, noise, vibration, and/or erosion. The flow diffuser of the present invention may be configured as a 90° elbow for use in a piping system to reduce turbulence and/or pulsation as the fluid passes through the improved elbow. The elbow can restore substantially laminar flow in a space of about four pipe diameters, with nominal pressure drop.

Abstract: When a fluid passes through a conventional elbow or valve in a piping system, turbulence is created in the fluid flow. The fluid may not stabilize and return to a laminar flow until 40-50 pipe diameters downstream. Turbulence in a piping system can cause a variety of problems such as noise, vibration, and/or erosion. Turbulence also creates a pressure drop which is undesirable. The flow diffuser of the present invention may be configured as a 90° elbow for use in a piping system to reduce turbulence and pressure drops as the fluid passes through the improved elbow. The elbow of the present invention included an elongate tapered discharge nozzle. The elbow can restore substantially laminar flow in a space of about four pipe diameters.

Abstract: A ceramic control valve of a faucet including a water stopping seat which is provided in the periphery thereof with a retaining edge. The water stopping seat is disposed in a floating fashion in the cylindrical valve body of the ceramic control valve such that the retaining edge of the water stopping seat is retained in an annular recess of the cylindrical valve body. The service life spans of the washers of the stationary valve block of the ceramic control valve and the circular surface of the faucet are thus prolonged.

Abstract: A valved device is provided for controlling flow into or out from a surgical patient. It includes a body defining a flow passageway and a valve connected to the body in flow communication with the body's passageway. The valve includes a barrel and a piston extending into the barrel. Means is provided for displacing the piston within the barrel along the barrel's axis to open a flow path that is preferably adapted for liquid suction. Means is also provided for rotating the piston within the barrel around the barrel's axis to open a flow path that is preferably adapted for smoke or gas evacuation.

Abstract: An undersea hydraulic coupling member is disclosed having angled flow ports to prevent ingress of debris into the hydraulic lines. A port guard attached to the valve actuator closes the flow ports unless the poppet valve is opened by mutual engagement with the opposing coupling member.