Valve for use as non-return valve in fluid distribution plant, has supply circuit switches arranged in supply circuit, where locking elements of switches are locked in opposite directions, and changeover switch for commutating circuit

摘要

The valve (1) has a switching element (10) adjustable from one position to another position, and an actuator coupled with the switching element. Sensors are arranged such that the sensors respond, if the switching element is in the former and the latter positions. Supply circuit switches are arranged in a supply circuit of the actuator. Locking elements of the supply circuit switches are parallelly connected, where the locking elements are locked in opposite directions. A changeover switch is provided for commutating the supply circuit.