In the application of plastic-coated PVC lay flat hose, sometimes some foreign bodies lead to blockage of PVC lay flat hose, resulting in abnormal effluent. We need to take appropriate measures to dredge PVC lay flat hose to ensure the application effect. Here we will learn some dredging methods of PVC lay flat hose!
1. The pressure dredging method can be used to flush the drip irrigation system with compressed air or pressure water of 5.05 *105-10.1 *105 Pa, which has a good effect on dredging the blockage of organic matter, but this method is ineffective for carbonate blockage.
2. Calcium carbonate can be precipitated by acid flushing method, 0.5%-2% hydrochloric acid solution can be used, and 1 meter head pressure can be used to input drip irrigation system. The solution can be detained for 5-15 minutes. When blocked by calcareous clay, it can be washed with sand acid flushing solution.
The blockage of plastic-coated PVC lay flat hose in use will lead to the decrease of irrigation efficiency and even affect the effect of irrigation. So when the PVC lay flat hose is blocked, don’t easily move around, we must carefully dredge and clean up, so as to avoid accidents.