A two-stage changeover valve is provided in a vaporized fuel passage connected between a fuel tank and a canister. A valve member is movably accommodated in a fluid passage formed in a valve housing. A valve seat is formed at an inner peripheral wall of the valve housing, so that the valve member is operatively seated on the valve seat. A restricted communication hole is formed in the valve member, so that an upstream side and a downstream side of the valve member are communicated with each other, even when the valve member is seated on the valve seat. The restricted communication hole is formed in a Laval-nozzle shape, so that vaporized fuel passing through the restricted communication hole is accelerated. As a result, a process for depressurizing inner pressure of the vaporized fuel in the fuel tank can be carried out in a shorter time.

A gas supply control device includes a main body, a control valve assembly extending into and received in the main body, a bottom lid attached to a bottom surface of the main body, and a top cover attached to a top surface of the main body. The gas supply control device provides an effect of simplicity and accuracy of gas supply therethrough.

A gas supply control device includes a main body, a control valve assembly extending into and received in the main body, a bottom lid attached to a bottom surface of the main body, and a top cover attached to a top surface of the main body. The gas supply control device provides an effect of simplicity and accuracy of gas supply therethrough.

A surface of a bearing member on a flow passage forming chamber-side is disposed to be exposed to the chamber. The bearing member includes a contact part, with which a side surface of a butterfly valve that is opposed to the bearing member is in contact, on at least a part of the surface of the bearing member on the chamber-side. The bearing member is a radial ball bearing and includes an outer bearing ring that is fitted to an inner periphery of a shaft hole, so that its axial displacement relative to a body is restricted, an inner bearing ring that is fitted on an outer periphery of a rotation shaft radially inward of the outer bearing ring, and a rolling element disposed between the outer bearing ring and the inner bearing ring. The contact part is provided on a surface of the inner bearing ring on the chamber-side.

A butterfly valve includes a valve body and valve clack in the valve body. The valve body is installed with at least one sprinkler connected to an inlet valve outside the valve body for purging the inner surface of butterfly valve in the middle of the valve clack is a horizontal drainage tray, one end of which is closed and the other is water outlet, and the valve clack is equipped with at least one drain hole connected to the drainage tray; the sprinkler is above the drainage tray. This invention can be filled with corresponding media for online cleaning, sterilization and drying of non-sterile areas of a butterfly valve group after conveying the powder to realize repeated butt-joints.

A valve device includes: an opening and closing section capable of being switched between an open state and a closed state, and a drive section having a rectilinearly moving mechanism configured to move a rectilinearly movable member in forward and backward directions; a transmission section configured to bring the opening and closing section to the closed state when the rectilinearly movable member is moved forward and to bring the opening and closing section to the open state when the rectilinearly movable member is moved backward; and a switching section capable of being switched between a connected state in which the movement of the rectilinearly movable member in the forward and backward directions is able to be transmitted to the transmission section and a disconnected state in which the movement of the rectilinearly movable member in the forward and backward directions is unable to be transmitted to the transmission section.

The invention refers to a cage valve comprising a valve cover (20, 42, 62) and a valve cage, which latter comprises a retaining element (28, 54, 72) and a plurality of throttle elements (30) which are designed in the form of a hollow section. The invention is characterized in that the valve cage is connected to the valve cover (20, 42, 62).

The invention refers to a cage valve comprising a valve cover (20, 42, 62) and a valve cage, which latter comprises a retaining element (28, 54, 72) and a plurality of throttle elements (30) which are designed in the form of a hollow section. The invention is characterized in that the valve cage is connected to the valve cover (20, 42, 62).

A valve armature for a solenoid valve includes a main body and a tappet that interacts with a valve seat. The main body and the tappet are connected to one another via a connecting apparatus. The connecting apparatus has at least one first latching element that is arranged on the tappet and at least one second latching element that is arranged on the main body. The latching elements are configured for a positively locking and/or non-positive latching connection.

A valve armature for a solenoid valve includes a main body and a tappet that interacts with a valve seat. The main body and the tappet are connected to one another via a connecting apparatus. The connecting apparatus has at least one first latching element that is arranged on the tappet and at least one second latching element that is arranged on the main body. The latching elements are configured for a positively locking and/or non-positive latching connection.