DK125681A - Valve for irrigation system - Google Patents

Abstract

In a watering system for growing tables 11, malfunctions often occur because of blockage in the valves, since the liquid can be mixed with impurities from the plants, which get stuck in the flow channels of the valve and block them. This can be prevented by providing the valves with a valve body 4 which can be axially shifted inside the valve, making the body 4 closed to a flow area in the feeding position, figure 1, and open to the same area in the draining position, figure 2. This achieves an increased liquid drainage rate, so that the opportunities for blockage are removed. The valve body 4, specifically, has a truncated conical top 5, which has an inner channel 7, and a valve surface 13 which can abut against a seat 14 in the valve. When the body 4 is lifted during the feeding of liquid, the flow to the channel 7 is limited by the body. Upon drainage, however, it is also open for liquid flow around the body when the latter moves downward. <IMAGE>