Abstract: A valve includes: a housing defining a chamber communicating with an inlet port and an exhaust port, a seat disposed in the housing between the inlet port and the exhaust port; an elastomeric or polymer sealing ring disposed in the seat; a valve element having a sealing surface that is a body of revolution, the valve element positioned in the housing such that it is moveable between a closed position in which the sealing surface is engaged with the sealing ring and an open position in which the sealing surface is disengaged from sealing ring; and at least one bypass channel defined in the chamber, arranged to communicate between the seat and the exhaust port when the valve element is in the open position.

Abstract: A single-use centerbody assembly for a valve includes: a centerbody, including: a process surface and a back surface; at least one inlet orifice disposed in the centerbody, and at least one outlet orifice disposed in the centerbody separate from the at least one inlet orifice; a peripheral surface extending between the process surface and the back surface; an inlet fitting extending from the peripheral surface; and an outlet fitting extending from the peripheral surface; a control diaphragm facing the process surface, a perimeter of the control diaphragm being bonded to the centerbody so as to define a seal that blocks the passage of fluid; and a backside diaphragm positioned facing the back surface, a perimeter of the backside diaphragm being bonded to the centerbody so as to define a seal that blocks the passage of fluid.

Abstract: A centerbody assembly for a valve includes: a centerbody having a process surface, at least one inlet orifice disposed in the centerbody and adapted to be disposed in fluid communication with a fluid at a process pressure, and at least one outlet orifice disposed in the centerbody separate from the at least one inlet orifice; an inlet port disposed in fluid communication with the at least one inlet orifice; an outlet port disposed in fluid communication with the at least one outlet orifice; and a flexible control diaphragm facing the process surface, wherein a perimeter of the control diaphragm is bonded to the centerbody so as to define a seal that blocks the passage of fluid.

Abstract: A centerbody assembly for a valve includes: a centerbody having a process surface, at least one inlet orifice disposed in the centerbody and adapted to be disposed in fluid communication with a fluid at a process pressure, and at least one outlet orifice disposed in the centerbody separate from the at least one inlet orifice; an inlet port disposed in fluid communication with the at least one inlet orifice; an outlet port disposed in fluid communication with the at least one outlet orifice; and a flexible control diaphragm facing the process surface, wherein a perimeter of the control diaphragm is bonded to the centerbody so as to define a seal that blocks the passage of fluid.

Abstract: A centerbody assembly for a valve includes: a centerbody having a first side which defines a process surface and an opposed second side defining a back surface, at least one inlet orifice disposed in the centerbody and adapted to be disposed in fluid communication with a fluid at a process pressure, and at least one outlet orifice disposed in the centerbody separate from the at least one inlet orifice; an inlet port disposed in fluid communication with the at least one inlet orifice; an outlet port disposed in fluid communication with the at least one outlet orifice; and a flexible control diaphragm having opposed reference and process sides, wherein the control diaphragm is positioned with the process side facing the process surface, and a perimeter of the control diaphragm is sealed to the centerbody.

Abstract: An image transfer belt is provided for use in digital printing applications which includes a base film layer having perforations therein which are filled with a conductive polymer layer to provide controlled conductivity to the belt. The belt further includes a compliant layer over the conductive polymer layer. The resulting belt exhibits electrical properties suitable for digital image transfer. These properties may be varied according to the desired application.

Abstract: A valve includes: a body including: a wall defining a process surface, a process void in the process surface adapted to communicate with fluid at process pressure, and at least two vent voids in the wall separate from the process void; an inlet port in fluid communication with the process void; and an outlet port in fluid communication with the vent void; a reference housing adapted to communicate with fluid at reference pressure; and a membrane constrained between the body and the reference housing with its process side substantially coplanar with the process surface. The process surface incorporates at least one groove therein which defines a flow path between the near vicinity of the process void and the near vicinity of the vent voids.

Abstract: An image transfer belt is provided for use in digital printing applications which includes a base film layer having perforations therein which are filled with a conductive polymer layer to provide controlled conductivity to the belt. The belt further includes a compliant layer over the conductive polymer layer. The resulting belt exhibits electrical properties suitable for digital image transfer. These properties may be varied according to the desired application.

Abstract: A pressure regulating valve includes a body having an outer surface, the interior of the body defining an inlet chamber adapted to receive a fluid at a process pressure, and an outlet chamber. The body includes at least one inlet passage communicating with the inlet chamber and the outer surface, and at least one outlet passage communicating with the outer surface and the outlet chamber. A reference housing is adapted to be disposed in fluid communication with a fluid at a predetermined reference pressure. An annular membrane is disposed between the body and the reference housing, so as to circumscribe the inlet and outlet passages. The membrane is arranged such that, when the reference pressure is higher than the process pressure the membrane engages at least one outlet passage, and when the process pressure is higher than the reference pressure, the membrane is not engaged with the outlet passage.

Abstract: A pressure regulating valve comprising a diaphragm for control of process pressure is provided. The diaphragm has a reference pressure on a first side and a process pressure on a second side. The second side is engagable with a process void and at least one vent void such that when the process pressure is below the reference pressure the diaphragm is engaged with the vent void. When the process pressure is above the reference pressure the diaphragm is not engaged with the vent void.

Abstract: A valve includes: a body including: a wall defining a process surface, a process void in the process surface adapted to communicate with fluid at process pressure, and at least two vent voids in the wall separate from the process void; an inlet port in fluid communication with the process void; and an outlet port in fluid communication with the vent void; a reference housing adapted to communicate with fluid at reference pressure; and a membrane constrained between the body and the reference housing with its process side substantially coplanar with the process surface. The process surface incorporates at least one groove therein which defines a flow path between the near vicinity of the process void and the near vicinity of the vent voids.

Abstract: A pressure regulating valve includes a body having an outer surface, the interior of the body defining an inlet chamber adapted to receive a fluid at a process pressure, and an outlet chamber. The body includes at least one inlet passage communicating with the inlet chamber and the outer surface, and at least one outlet passage communicating with the outer surface and the outlet chamber. A reference housing is adapted to be disposed in fluid communication with a fluid at a predetermined reference pressure. An annular membrane is disposed between the body and the reference housing, so as to circumscribe the inlet and outlet passages. The membrane is arranged such that, when the reference pressure is higher than the process pressure the membrane engages at least one outlet passage, and when the process pressure is higher than the reference pressure, the membrane is not engaged with the outlet passage.

Abstract: A relief valve comprising a diaphragm for control of process pressure is provided. The diaphragm has a fluid pressure on a first side and a process pressure on a second side. The second side is engagable with a process void and at least one vent void such that when the process pressure is below the fluid pressure the diaphragm is engaged with the vent void. When the process pressure is above the fluid pressure the diaphragm is not engaged with the vent void.

Abstract: A relief valve comprising a diaphragm for control of process pressure is provided. The diaphragm has a fluid pressure on a first side and a process pressure on a second side. The second side is engagable with a process void and at least one vent void such that when the process pressure is below the fluid pressure the diaphragm is engaged with the vent void. When the process pressure is above the fluid pressure the diaphragm is not engaged with the vent void.