Methods, apparatus, systems and articles of manufacture for reducing noise and/or cavitation in valves are disclosed. An example disclosed herein includes a valve including a valve body including a fluid inlet, a fluid outlet, and a fluid passageway extending between the fluid inlet and the fluid outlet, and a valve trim apparatus disposed in the fluid passageway, the valve trim apparatus including a plug and a cage, the plug circumscribing the cage, the plug including first openings, the cage including second openings, the plug movable relative to the cage between a first position to enable fluid communication between the first openings of the plug and the second openings of the cage, and a second position to prevent fluid communication between the first openings of the plug and the second openings of the cage.

Methods, apparatus, systems and articles of manufacture for reducing noise and/or cavitation in valves are disclosed. An example disclosed herein includes a valve including a valve body including a fluid inlet, a fluid outlet, and a fluid passageway extending between the fluid inlet and the fluid outlet, and a valve trim apparatus disposed in the fluid passageway, the valve trim apparatus including a plug and a cage, the plug circumscribing the cage, the plug including first openings, the cage including second openings, the plug movable relative to the cage between a first position to enable fluid communication between the first openings of the plug and the second openings of the cage, and a second position to prevent fluid communication between the first openings of the plug and the second openings of the cage.

A sensor-operated kitchen faucet comprises a base, a mixing valve, a control assembly and a spout. The base extends vertically to define an inner space. The mixing valve is disposed in the inner space and communicated to a cold source and a hot source to supply a combined fluid. The control assembly comprises a inlet conduit, a outlet conduit, a cushioning member, a solenoid valve and a sensor. The inlet conduit is connected to the mixing valve to receive the combined fluid, the cushioning member comprises an outer tubing and an inner tubing, and the solenoid valve is electrically connected to the sensor and movably disposed at a connecting port communicated between the outer tubing the inner tubing. The spout is fluidly connected to the outlet conduit of the control assembly through a connecting conduit to supply the combined fluid.

A valve assembly for an exhaust system of a vehicle comprises a housing defining an inlet, an outlet, and a longitudinally extending exhaust gas passageway in fluid communication with the inlet and the outlet. The valve assembly further comprises a valve flap disposed in the housing and rotatable between a first position restricting exhaust gas flow through the exhaust gas passageway, and a second position whereat exhaust gas flow through the exhaust gas passageway is less restricted. A mass damper is disposed within the exhaust gas passageway and attached to the valve flap. The mass damper includes end portions and an intermediate portion disposed between the end portions with the intermediate portion having a thickness that is greater than a thickness of the end portions. The mass damper is positioned proximate an inner surface of the housing and positioned between the valve flap and the housing when the valve flap is at the second position.

A valve assembly for an exhaust system of a vehicle comprises a housing defining an inlet, an outlet, and a longitudinally extending exhaust gas passageway in fluid communication with the inlet and the outlet. The valve assembly further comprises a valve flap disposed in the housing and rotatable between a first position restricting exhaust gas flow through the exhaust gas passageway, and a second position whereat exhaust gas flow through the exhaust gas passageway is less restricted. A mass damper is disposed within the exhaust gas passageway and attached to the valve flap. The mass damper includes end portions and an intermediate portion disposed between the end portions with the intermediate portion having a thickness that is greater than a thickness of the end portions. The mass damper is positioned proximate an inner surface of the housing and positioned between the valve flap and the housing when the valve flap is at the second position.

A power-assisted pipeline valve, including a valve body and a pressure relief assembly. A top of the valve body is provided with a first chute. A sliding sleeve is disposed in the valve body and has two sides respectively connected to an inner wall of the valve body through a first spring. A ball valve assembly is disposed in the sliding sleeve and connected to a valve stem. The valve stem passes through the sliding sleeve and is sleeved with a sliding shell, and the sliding shell is disposed in the first chute and provided with a rack and an electric power-assisted mechanism which is connected to the valve stem. The top of the valve body is penetrated by a first rotating shaft which is orderly sleeved with a fifth gear, a rotary table and a third spring from top to bottom. The fifth gear is meshed with the rack. The rotary table is connected to the fifth gear through a centrifugal locking mechanism. The third spring is connected to the rotary table and the valve body respectively. The pressure relief assembly is disposed on the valve body and connected to the rotary table. The present disclosure effectively solves the problems in the prior art that it is laborious for a person with a small strength to operate a manual valve, and a water hammer prevention effect is poor, which seriously affects the service life of the manual valve.

A valve assembly for a vehicle exhaust system includes an exhaust component body defining an exhaust gas flow path and a flap mounted to pivot in the exhaust gas flow path between a minimum flow position and a maximum flow position. At least one bushing supports the flap for rotational movement relative to the exhaust component body about an axis. In one example, a damper is positioned radially between the bushing and the flap and defines an inner diameter that is smaller than an outer diameter of the bushing. In another example, a damper is attached to the flap such that a distal edge is free from attachment to a distal edge of the flap such that as the flap returns to the minimum flow position the damper first contacts the exhaust component body and then the flap contacts the damper.

A subplate mounted (SPM) valve includes a valve body having pilot port, a piston configured to be actuated by fluid from the pilot port, a first control chamber and second control chamber each formed in the valve body and fluidicly isolated from the pilot port, a first flow restrictor fluidicly disposed between the first control chamber and the second control chamber and configured to restrict flow in at least one direction between the first control chamber and the second control chamber, a cage coupled to the valve body and having a supply port, a return port, and a work port, and a spool slidably engaged with the cage and configured to selectively restrict flow between the supply port and the return port by actuation of the piston.

A fluid flow regulation assembly (1) includes: movable parts, for being actively mechanically driven, including at least one of a fluid flow regulating body for regulating a fluid flow and a rotor of a motor for driving the regulating body; and power electronics for controlling the motor. The movable parts and/or the power electronics are a source of vibration. Static parts are exposed to traveling vibrations originating from the source of vibration and include at least one of the group: a pump housing (3), a valve housing, a motor housing (5), a pump base and an electronics housing (7). The static parts include a structural element (11) with at least one vibration attenuation section (9) for attenuating vibrations: that originate from the source of vibration; travel along the structural element and have a vibration frequency above a pre-determined minimum vibration frequency (f.sub.min).

A fluid flow regulation assembly (1) includes: movable parts, for being actively mechanically driven, including at least one of a fluid flow regulating body for regulating a fluid flow and a rotor of a motor for driving the regulating body; and power electronics for controlling the motor. The movable parts and/or the power electronics are a source of vibration. Static parts are exposed to traveling vibrations originating from the source of vibration and include at least one of the group: a pump housing (3), a valve housing, a motor housing (5), a pump base and an electronics housing (7). The static parts include a structural element (11) with at least one vibration attenuation section (9) for attenuating vibrations: that originate from the source of vibration; travel along the structural element and have a vibration frequency above a pre-determined minimum vibration frequency (f.sub.min).