| 摘要 |
A valve unit having an overridable check valve. On a valve housing a first and a second power connection are provided, which are connected by way of a power duct, on which an overridable check valve is placed, which may be overridden by a fluid control signal, such control signal being able to be supplied to a signal input connection on the valve housing. The valve housing is additionally fitted with a signal output connection communicating with the power duct.
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