A combined exhaust and engine brake rocker arm assembly configured to selectively open first and second exhaust valves, includes a rocker arm body, an exhaust rocker arm assembly formed in the rocker arm body, and an engine brake rocker arm assembly formed in the rocker arm body and configured to operate in a collapse mode and a rigid mode. The exhaust rocker arm assembly is configured to selectively engage a valve bridge to open the first and second exhaust valves, and the engine brake rocker arm assembly is configured to selectively engage the valve bridge to open only the first exhaust valve.

A check valve for a solenoid valve inclues a check valve seat that is arranged on an edge of a fluid passage and a movable closing element configured to execute a direction-oriented throughflow and sealing function. The closing element includes a sealing cone, a contact foot with a plurality of outflow grooves formed on the edge, and an elastic sealing ring that is arranged between the contact foot and the sealing cone. The outflow grooves form in each case a seating edge for the elastic sealing ring during sealing. The outflow grooves are configured in each case with an arcuate seating edge, which has a predetermined arc length, so that a circle segment of the elastic sealing ring, with an opening angle in the region of 40° to 120°, butts against the respective seating edge during sealing. A solenoid valve includes the check valve.

A check valve for a solenoid valve inclues a check valve seat that is arranged on an edge of a fluid passage and a movable closing element configured to execute a direction-oriented throughflow and sealing function. The closing element includes a sealing cone, a contact foot with a plurality of outflow grooves formed on the edge, and an elastic sealing ring that is arranged between the contact foot and the sealing cone. The outflow grooves form in each case a seating edge for the elastic sealing ring during sealing. The outflow grooves are configured in each case with an arcuate seating edge, which has a predetermined arc length, so that a circle segment of the elastic sealing ring, with an opening angle in the region of 40° to 120°, butts against the respective seating edge during sealing. A solenoid valve includes the check valve.

A non-return valve for a solenoid valve includes a non-return valve seat and a movable closure element. The valve seat is arranged at an edge of a fluid channel. The movable closure element is configured to carry out a direction-orientated throughflow and sealing function. The closure element includes a sealing cone, an abutment base, and a resilient sealing ring. The sealing ring is arranged between the abutment base and the sealing cone. The abutment base forms, in the event of sealing, a support face for the resilient sealing ring. At an edge of the non-return valve seat there is a first support face which in the event of sealing forms with a second support face which is formed at the outer edge of the abutment base in the direction of the non-return valve seat a mechanical axial stop for the movable closure element.

A non-return valve for a solenoid valve includes a non-return valve seat and a movable closure element. The valve seat is arranged at an edge of a fluid channel. The movable closure element is configured to carry out a direction-orientated throughflow and sealing function. The closure element includes a sealing cone, an abutment base, and a resilient sealing ring. The sealing ring is arranged between the abutment base and the sealing cone. The abutment base forms, in the event of sealing, a support face for the resilient sealing ring. At an edge of the non-return valve seat there is a first support face which in the event of sealing forms with a second support face which is formed at the outer edge of the abutment base in the direction of the non-return valve seat a mechanical axial stop for the movable closure element.

A system includes a flow control assembly having a first portion configured to be positioned within and coupled to a first passageway formed in a wellhead component and a second portion configured to be coupled to a second passageway formed in a body that is configured to be coupled to the wellhead component. An actuator of the second portion is configured to drive a valve member of the first portion into an open position to enable fluid flow across the flow control assembly.

A system includes a flow control assembly having a first portion configured to be positioned within and coupled to a first passageway formed in a wellhead component and a second portion configured to be coupled to a second passageway formed in a body that is configured to be coupled to the wellhead component. An actuator of the second portion is configured to drive a valve member of the first portion into an open position to enable fluid flow across the flow control assembly.

A sleeping pad with a fast-inflation and deflation air nozzle includes a sleeping pad body with an air nozzle. The air nozzle includes a base, an air channel and a sealing cover. The sealing cover is detachably and sealedly inserted into the air channel. The air channel is detachably and sealedly inserted into the base. A deflating gasket is arranged at a top of a support in the air channel. A bottom of the support is provided with an inflating gasket. A switch between an inflation mode and a deflation mode is realized through switching positions of a first baffle plate and a second baffle plate of a switch baffle plate.

Provided is a valve device and a shock absorber that can prevent them from being in a failure state at the normal time and can freely set a passive valve even when both pressure control and passage opening/closing are performed by a solenoid valve. For this reason, the valve device includes a first passage and a second passage connected downstream of the pressure introducing passage, a solenoid valve that opens the first passage to control the upstream pressure and closes the second passage when energized, and that closes the first passage and opens the second passage when not energized, and a passive valve provided downstream of the solenoid valve in the second passage.

Provided is a valve device and a shock absorber that can prevent them from being in a failure state at the normal time and can freely set a passive valve even when both pressure control and passage opening/closing are performed by a solenoid valve. For this reason, the valve device includes a first passage and a second passage connected downstream of the pressure introducing passage, a solenoid valve that opens the first passage to control the upstream pressure and closes the second passage when energized, and that closes the first passage and opens the second passage when not energized, and a passive valve provided downstream of the solenoid valve in the second passage.