The HS valve has been specially developed for the filling and draining of
ebb and flow panels. By contrast with the Quick-Valve, the feed and discharge flows are combined (see working principle).
During filling, the water flows through a small hole in the internal cone,
reducing the water flow and the water level can gradually rise.
During discharge, the cone drops back into the valve, thus creating a larger discharge opening.
The passage opening can be reamed to achieve a higher filling capacity. A larger feed/discharge hose should be used to achieve a higher discharge capacity.