Quote:
Originally Posted by jscarrlay
busy day on the camper-fire,hob and cooker all working.filled water tank and pump is working still no water.pulled hose off water tank and shoved coat hanger up to see if any blockage none found.the only thing that is concerning me is the height of the pump (on shelf under sink) in relation to the bottom of water tank the water has to travel up this hose on a diagonal across the width of the van then up to water pump so im wondering if the water isnt close enough for pump to work if you see what i mean
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Some small pumps like those used in campers, motor homes, etc, have no "lift," meaning the suction side of the pump, cannot lift a column of water, that it them pumps. The small pumps require a head pressure, by mounting them under the level of the water to be pumped. Check the documentation that came with your pump, it should advise you about mounting, and even in some cases the line length and diameters to use for maximum efficiency.
Sorry for such a generic answer, but pumps, and pump design, is actually a science unto itself, and all the variables are usually considerred by the manufacturer and supplied with installation instructions. Many people toss that set of instructions, and do it "their way." Sometimes they get lucky, sometimes they don't. Pumps, is just one of those areas, where following the instructions makes more sense that trying to "wing it."
Hope this helped.