In a throttle device including: a throttle shaft to which a throttle valve is secured; a motor; and a deceleration mechanism decelerating rotation of a drive shaft of the motor and transmitting the rotation to the throttle shaft, the deceleration mechanism includes a throttle gear secured to the throttle shaft, the throttle gear includes a tubular ring into which the throttle shaft is detachably inserted and a gear main body including a gear portion, and the gear main body is formed of a resin by insert processing including the ring.

The invention relates to a valve for controlling a fluid flow from a first environment to a second environment, having a frame for disposing a separating element in the region of an opening, said element separating the first environment from the second environment, and a first flap and a second flap for controlling the fluid flow through the opening between the first environment and the second environment, the flaps being movable in the frame. The flaps have protrusions designed to reduce noise generation in the fluid flow.

An intake device includes: a plurality of intake ports which are adjacent to each other with a partition wall interposed therebetween; a valve body provided for each of the plurality of intake ports; a rotating shaft which rotates along with the valve body; and a bearing member which is disposed between the intake ports adjacent to each other and rotatably supports the rotating shaft of the valve body, wherein the bearing member includes a bearing main body having a bearing hole which rotatably supports the rotating shaft, and an arm portion which extends in a length larger than an inner diameter of the bearing hole from the bearing main body along the partition wall between the intake ports adjacent to each other and configures a bearing-side welding portion.

In accordance with at least one aspect of this disclosure, a limiting system for defining a rotational limit of a valve disc of a butterfly valve can include, a crank configured to be disposed on a terminal end of a valve shaft and configured to connect to a drive linkage to drive the crank and rotation of the valve disc. The crank can include a crank arm extending radially outward from the shaft. The crank stop can be configured to contact a portion of the second connecting flange of the first valve to physically limit rotation of the crank and the valve disc within a predefined rotational quadrant.

In accordance with at least one aspect of this disclosure, a modular valve system includes, at least a first valve. The first valve can be configured to connect to one or more additional valves. The first valve includes, a first housing having a first inlet and a first outlet with a cylindrical flow path through the housing defined between the first inlet and the first outlet along a flow axis, where a diametral plane is defined diametrically spanning the cylindrical flow path.

Embodiments of the present disclosure present a valve assembly that includes a valve body having a gas passage bore, a valving bore extending along a longitudinal axis and intersecting the gas passage bore, a first bearing surface concentric with the longitudinal axis and a radially spaced apart second bearing surface concentric with the longitudinal axis, wherein an interface of the gas passage bore and the valving bore defines a flow port radially intermediate the first bearing surface and the second bearing surface. The valve assembly further includes a shaft valve extending along the longitudinal axis and rotatably mounted in the valving bore.

A pool wave generator having a pool area and a plurality of chambers for generating a wave in the pool area. Exemplary embodiments include using exhaust valves in each chamber to control the performance of fans. Measuring the power consumed by the fans in real time allows determination of the amount of air to be evacuated from the pneumatic system (and thus an opening angle of the exhaust valves) so that the fans operate at maximum efficiency and with less instability. In an exemplary embodiment, a valve mounted on the fan inlet allows the incoming air flow to be controlled, thereby allow the motors to continue rotating at a given speed with little or no energy consumption when the valve is partially or fully closed.

Disclosed in the present application is a valve, comprising a housing, a first valve body, a second valve body and a control assembly. The housing defines a housing channel. The first valve body is arranged in the housing channel in a rotatable manner, defines a valve body channel, and can connect or disconnect the housing channel. The second valve body is arranged in the valve body channel in a rotatable manner, so as to connect or disconnect the valve body channel. The control assembly is configured to control the rotation of the first valve body and the second valve body. The valve of the present application is controlled to rotate by means of the control assembly. More specifically, an external control device (for example, an electric motor) controls the opening and closing of the valve simply by means of controlling a shaft rod, thereby simplifying the control logic of the valve.

A pool wave generator includes a pool area; at least one chamber on one side of the pool area for releasing water into the pool area to generate a wave in the pool area; a plenum in fluid communication with the at least one chamber; at least one fan positioned in fluid communication with the plenum; a valve controller; an exhaust valve capable of being selectively opened at different angles, wherein air can be vented out of the chamber through the exhaust valve; a first sensor in communication with the valve controller; wherein: the first sensor monitors fan power consumption; and a degree to which the exhaust valve is opened is determined by the valve controller based on power consumption information for the at least one fan.

In accordance with at least one aspect of this disclosure, a modular valve system includes, at least a first valve. The first valve can be configured to connect to one or more additional valves. The first valve includes, a first housing having a first inlet and a first outlet with a cylindrical flow path through the housing defined between the first inlet and the first outlet along a flow axis, where a diametral plane is defined diametrically spanning the cylindrical flow path.