martinweil
2010-07-18 20:13:39
- #1
Hello dear forum community,
I will try to describe my problem:
In the garden, I have a cistern with a capacity of about 2,000 liters that collects rainwater (about 2.50m deep, the "emergency overflow" is positioned so that the water level can only rise to about 50 cm below the top edge, i.e. to about 2.0m height). Now I have bought a standard garden pump to be able to pump out the water there from time to time. For this purpose, a hose about 5-6m long is connected to the pump, which reaches into the cistern. At the open end of the hose, there is a type of non-return valve with a mesh screen, which on the one hand prevents the standing water in the hose from flowing back into the cistern when the pump is switched off and on the other hand is supposed to prevent dirt from entering the pump. When the pump sucks, the non-return valve is "sucked open" and water can be pumped from the cistern.
This has worked very well several times, but now it no longer works. Apparently, the valve no longer opens correctly. However, the valve should not actually be broken, because a test with a rain barrel (same height as the pump) ran for minutes without problems. Without the valve, however, the water runs out of the hose so quickly that a test is not possible. And I somehow cannot imagine that the pump (bought at the beginning of the year) suddenly cannot reach the height anymore. The pump pressure during the rain barrel test was very good.
Does anyone have any idea what I can test or do? Or do you need more detailed / better information?
Thanks for suggestions Martin
I will try to describe my problem:
In the garden, I have a cistern with a capacity of about 2,000 liters that collects rainwater (about 2.50m deep, the "emergency overflow" is positioned so that the water level can only rise to about 50 cm below the top edge, i.e. to about 2.0m height). Now I have bought a standard garden pump to be able to pump out the water there from time to time. For this purpose, a hose about 5-6m long is connected to the pump, which reaches into the cistern. At the open end of the hose, there is a type of non-return valve with a mesh screen, which on the one hand prevents the standing water in the hose from flowing back into the cistern when the pump is switched off and on the other hand is supposed to prevent dirt from entering the pump. When the pump sucks, the non-return valve is "sucked open" and water can be pumped from the cistern.
This has worked very well several times, but now it no longer works. Apparently, the valve no longer opens correctly. However, the valve should not actually be broken, because a test with a rain barrel (same height as the pump) ran for minutes without problems. Without the valve, however, the water runs out of the hose so quickly that a test is not possible. And I somehow cannot imagine that the pump (bought at the beginning of the year) suddenly cannot reach the height anymore. The pump pressure during the rain barrel test was very good.
Does anyone have any idea what I can test or do? Or do you need more detailed / better information?
Thanks for suggestions Martin