| 摘要 |
<p>For the regulation of fluid flow, particularly in automatic irrigation systems for smaller hobby-greenhouses, a movably suspended regulation member (30) of strongly suctorial material, viz. synthetic felt is used, which is connected to the growth medium, e.g. the soil, by means of suctorial wicks (32) as the heaviness (weight) of the regulation member in wet heavy condition respectively in dry, lighter condition via a lever (12) is used to activate a valve (18) at opposite end of the lever (12) which being spring loaded by means of a spring (36) to establish the fluid flow through the valve (18) when the regulation member (30) is dried up corresponding to the growth medium (6) lacking water. </p> |
