A valve includes a housing and a rotary body arranged notably therein with a through opening for a fluid, wherein a flow path is shut off or is at least partially opened in accordance with the rotational angle position of the rotary body about an axis of rotation, wherein the rotary body is connected to a spindle by which the rotary body is rotatable, wherein the housing is provided with a covering, and wherein the spindle reaches through the covering. The spindle is dynamically sealed by a sealing device which follows movements of the spindle relative to the housing and/or to the covering.

An apparatus includes a valve having a hollow body and an inner sealing assembly positioned in the hollow body. The inner sealing assembly includes a piston and can be moved between an open position and a closed position to selectively control flow along a flow path through the valve. The flow path includes a bore of the piston that allows flow through the piston, and pressure within the valve from a fluid in the flow path within the valve biases the inner sealing assembly toward the closed position to stop flow through the valve. Additional systems, devices, and methods are also disclosed.

An apparatus includes a valve having a hollow body and an inner sealing assembly positioned in the hollow body. The inner sealing assembly includes a piston and can be moved between an open position and a closed position to selectively control flow along a flow path through the valve. The flow path includes a bore of the piston that allows flow through the piston, and pressure within the valve from a fluid in the flow path within the valve biases the inner sealing assembly toward the closed position to stop flow through the valve. Additional systems, devices, and methods are also disclosed.

A flow rate control valve includes a housing, a valve part, a driving part, a power transmission shaft and a sealing part. The valve part is provided in the housing. The driving part is placed outside the housing and configured to drive the valve part. The power transmission shaft penetrates the housing and connects the driving part to the valve part to enable power transmission. The sealing part seals a part through which the power transmission shaft penetrates and restrains a leakage of evaporated fuel from the housing. The sealing part includes a first sealing member and a second sealing member. The first sealing member is made of an organic material having a resistance against a fuel permeation, and the second sealing member is made of an organic material having a resistance against low temperature.

A block valve and a block valve for a raw material container having a structure in which a retaining part of a liquid material or cleaning fluid is not present inside. In the block valve, a first side of a main flow path in communication with a supply route of a block body and a first minimal port part of a first diaphragm valve in a tilted state with respect to the block body are connected, a second side of the main flow path and a second minimal port part of a second diaphragm valve are connected, a port opening of the second diaphragm valve is in communication with a supply port part, and a joint port part of the first diaphragm valve and a connection line in a vertical direction are connected by a communication path.

A block valve and a block valve for a raw material container having a structure in which a retaining part of a liquid material or cleaning fluid is not present inside. In the block valve, a first side of a main flow path in communication with a supply route of a block body and a first minimal port part of a first diaphragm valve in a tilted state with respect to the block body are connected, a second side of the main flow path and a second minimal port part of a second diaphragm valve are connected, a port opening of the second diaphragm valve is in communication with a supply port part, and a joint port part of the first diaphragm valve and a connection line in a vertical direction are connected by a communication path.

Seal assemblies for use with fluid valves are described. An example apparatus includes a cage; a plug including a seal gland; and means for sealingly engaging an inner surface of the cage at least partially positioned in the seal gland and including a first portion and a second portion, in response to a fluid acting on the first portion in a first direction, the first portion to engage, outwardly urge, and splay the second portion to sealingly engage the cage, in response to the fluid acting in a second direction, the second portion to deter the fluid from acting on the first portion, the first direction opposite the second direction.

The present disclosure relates to an air supply valve having a backflow prevention function and a valve module, for preventing backflow of air or gas through an outlet. The air supply valve includes a housing that includes a motor mounted therein and in which a supply flow path and an outlet of air are formed, a driver including a gear part for transmitting driving force of the motor and a converter for converting rotation of the gear part to linear motion, and a valve module that is coupled to an end of the converter and is opened while being spaced apart from the outlet of the housing to be connected to the supply flow path or is closed while being in contact with the outlet.

The present disclosure relates to an air supply valve having a backflow prevention function and a valve module, for preventing backflow of air or gas through an outlet. The air supply valve includes a housing that includes a motor mounted therein and in which a supply flow path and an outlet of air are formed, a driver including a gear part for transmitting driving force of the motor and a converter for converting rotation of the gear part to linear motion, and a valve module that is coupled to an end of the converter and is opened while being spaced apart from the outlet of the housing to be connected to the supply flow path or is closed while being in contact with the outlet.

A liquid collection and evaporation device is proposed for use between a cooling water regulating valve of a vehicle and an actuator device for actuating the valve. The liquid collection and evaporation device includes a separation tank for collecting and evaporating liquid droplets emerging from the cooling water regulating valve. The separation tank here has a connection to the valve, a connection to the actuator device, and also a multiplicity of openings which firstly prevent the liquid droplets from emerging from the tank and secondly permit droplet evaporation because of waste heat acting on the tank. The invention furthermore relates to a valve unit with such a liquid collection and evaporation device, and to a vehicle with such a valve unit.