The thermostat device includes a housing having a valve seat formed thereinside, a thermo-element having one end inserted inside the housing, a valve body seated on or separated from the valve seat by the extension/contraction of the thermo-element, a coil spring biasing the valve body toward the valve seat, and a frame supporting one end of the coil spring. The housing has a hollow body part opening at one end, paired legs erecting from the opening edge of the body part, on whose leading ends the frame is hooked, and ribs provided at the opening edge and contiguous to each root side of the legs. The outer surface of each leg is arc-shaped, and the outer surface of each rib is curved or inclined to extend from the outer surface of the corresponding leg toward the inner side of a circle connecting the outer surfaces of the pair of legs.

The present invention provides a coupling device for coupling a rotary actuator to a mechanical device having a rotatable shaft. The coupling device comprises a spring return module with a first rotatable coupling configured to engage a first portion of the shaft, and a spring engaged with the first rotatable coupling, wherein the first rotatable coupling is rotatable about a rotation axis, and wherein rotation of the rotatable coupling about the rotation axis in a first direction causes mechanical energy to be stored in the spring. The coupling device further comprises an actuator coupling module comprising a second rotatable coupling. The second rotatable coupling is configured to engage a second portion of the shaft, the second rotatable coupling being further engageable with an output of the rotary actuator. The second rotatable coupling is rotatable about the rotation axis, the second rotatable coupling being rotatable relative to the first rotatable coupling about the rotation axis.

The disclosed technology can include a bypass valve assembly having a partition that can fluidly separate an inlet and an outlet of a fluid heating system. A first bypass valve and a second bypass valve can be mounted to the partition and configured to permit a fluid to flow between the inlet and the outlet. The first bypass valve and the second bypass valve can be configured to transition between a closed state and an open state. The first bypass valve and the second bypass valves can each have a spring configured to transition the respective first and second bypass valve from the closed state in response to experiencing a pressure that is greater than or equal to a respective first or second predetermined pressure. The second predetermined pressure can be greater than the first predetermined pressure.

The present disclosure relates to an improved pilot valve assembly for a hydrant pit valve. The pilot valve assembly includes a poppet that is movable between an open position and a closed position. The poppet has a molded seal with an interlock feature to hold the seal rigidly. The pilot valve assembly also includes a manually reset mechanism. The reset mechanism can be horizontally positioned and can function to reset the pilot actuator for the next refueling operation. A lanyard can be connected to the poppet to be used a deactuation mechanism.

The disclosure relates to a valve unit having a housing, a fluidic valve drive which has a fluid chamber and a piston delimiting the fluid chamber on one side, a valve spindle coupled to the piston, an elastic restoring element which exerts a force on the valve spindle along the spindle axis, and at least one manually actuatable lever provided on the outside of the valve drive for manually adjusting the valve spindle.

A media propelling system comprises a motor for rotating a wheel assembly that is configured to propel the media and a valve assembly configured to control flow rate of the media to the wheel assembly. The valve assembly includes a media valve configured to selectively open and close to control the flow rate of the media to the wheel assembly, an actuator that actuates the media valve to open or close the media valve and thereby change the flow rate of the media, and a control valve configured to receive pressurized material and dispense the pressurized material to the actuator to thereby control operation of the actuator. A control system is in communication with the motor and the control valve and is configured to control the control valve based on a comparison of a sensed or actual amperage of the motor and a target amperage of the motor.

A valve assembly that includes a valve housing and a valve body that is configured to be mated with the valve housing. The valve housing includes at least one window that extends through a wall of the valve housing, and the valve body includes at least one prong that is configured to mate with the window when the valve body is mated with the valve housing.

A control assembly for a valve or any type of rotatable device can include a handle configured to rotate a valve member of the valve to control flow of fluid through the valve. The handle can include a locking member and a grip portion. The control assembly can include a guide body including a mounting surface, a central aperture, and a plurality of locking features. Each of the plurality of locking features can be spaced apart from a center of the central aperture by a first distance. Each of the plurality of locking features can be arranged to engage the locking member to releasably secure the handle at corresponding rotational orientations. Each rotational orientation can be associated with a corresponding flow configuration for the valve.

A solenoid valve in which a plunger is disposed in an accommodation space inside a solenoid unit, includes: a first breathing flow passage extending in a circumferential direction on an outer periphery of a stator to communicate with an outside of the solenoid valve; a second breathing flow passage extending from the first breathing flow passage in an axial direction at a part in the circumferential direction to communicate with a first space formed between the stator, a sleeve, and a spool; and a third breathing flow passage extending in the axial direction on an inner periphery of the stator to allow communication between the first space and a second space.

A housing having a housing body (100) carries on the outside of one of the side walls (110) a bolt (500) aligned parallel to the lid guide grooves (120) and the lid (200) carries a sleeve (222) fixed to a tab (220) projecting over the upper edge of the corresponding side wall (110) of the housing body (100) and aligned coaxially with the bolt (500). The sleeve (222) engages around the bolt (500) to form an axially and rotationally movable sliding bearing.