Hydraulic valve

A hydraulic valve having a housing (2, 2', 2") in which a housing partition (6, 6', 6") formed with a passage means (7) therethrough is provided between an inlet bore (3) and an outlet bore (4) aligned therewith, said passage means having associated therewith a valve seat for a non-return flap valve element (9) adapted to close in one flow direction, said housing containing at least one flow channel (11) bypassing said passage means for performing at least one further valve function, characterized in that to afford ample space for several valve functions without affecting one another, said flow channel (11) for said further valve function is eccentrically located on one side of said housing partition (6, 6.alpha., 6") while said passage means (7) is eccentrically located on the other side of said housing partition, both eccentric positions being within the cross-sectional area (Q) of said housing defined by the aligned bores (3, 4), further characterized in that within said flow channel (11) is located a means (12, 19, 26) effecting throttling action therein in the direction of flow blocked by said non-return valve, and further characterized in that said flap valve element occupies not more than half of the cross-sectional area (Q).