Kuhn S.a.

Pierre Fischbach

Bernard Wattron

Martin Walch

Rino Ermacora

Joel Wilhelm

Roland Helfer

A valve includes a distributor with four ports and two positions. In a first position, a first non-return valve allows only circulation of a fluid from the first port toward the third port, while the second port and the fourth port are directly in communication with one another. In a second position, the third port and the fourth port are directly in communication with one another, while a second non-return valve allows only circulation of fluid from the third port and the fourth port in communication toward the first port.

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Ottersthal, France

Pierre Fischbach