Valve block for domestic sewage treatment system, comprises air channels and valve seats over which electric valves are arranged so that valve cones tightly close with the valve seat in the closed valve
摘要
<p>The valve block comprises air channels and valve seats over which electric valves are arranged so that the valve cones tightly close with the valve seat in the closed valve. The shafts of the valve cones are thread rods that are transferred by stepping motor in rotation and into a linear movement that causes a continuous opening and closing of the valve towards rotational direction. The valves are surrounded with a housing in which a flow control is arranged.</p>
