Danfoss A/s

Hans Christian Sand

Helge B Nielsen

A hydraulic valve with a housing, having an inlet connection and an outlet connection with a hollow space between them, in which a valve slide is arranged to reciprocate, and, depending on its position, sets a flow cross section between the inlet connection and the outlet connection more or less free. In such a valve it is intended to improve the operational behaviour, that is, on the one hand to prevent a jamming and on the other hand to keep the leakage small. For this purpose, the valve slide is surrounded by a bush, which is arranged to be radially expandable in the hollow space.

Hydraulic valve

A hydraulic valve with a housing, which is made of a plastic material, and with at least two fluid connections and a valve element arranged movably in the housing. A valve of this kind must on the one hand be able to withstand a sufficient pressure and on the other hand the production of the valve must be inexpensive. For this purpose the housing is surrounded by a metal sheet enclosure having at each fluid connection an opening, which is surrounded by a metal sheet wall projecting from and connected with the metal sheet enclosure.

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Sønderborg, Denmark

Hans Christian Sand