GDP15-xS-027 Wall Hung Boiler Pump

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Q:Who can tell me such water pump medium flow direction should be what kind of, from left to right, or from right to left, is low into the higher?
Low inlet and outlet
Q:Can centrifugal pumps be idle? What's the status of the empty transfers?
The centrifugal pump can not be idle, idle will wear packing (packing seal, mechanical seal is almost not damaged) parts, also caused the seal ring, seal, etc. the balance disc wear quickly, and the temperature will rise sharply, causing damage; air transfer effects caused by transient overload voltage of the motor is large, if the motor can not automatically jump to motor will burn.Centrifugal pump mostly rely on the delivery of liquid lubrication and cooling seal of centrifugal pump, idling is empty load, is to open the inlet valve, close the exit valve operation can move, try reversing or empty load operation should be based on the inevitable time, pump specification shall prevail.
Q:Power flow conversion of water pump
Upstairs in Wurenzidi, pump power is related to the flow and the head, a simple formula: = /367 * power flow lift efficiency
Q:How to introduce water pump?
First, to explain the basic parameters, such as pump flow, head, motor power, efficiency, outlet diameter, single-stage pump or multi-stage pump, fixed pump or submersible pump, water pump or sewage pump, deep well pump, self suction pump etc..
Q:Multi storey residential buildings also need to set up pressurized water pump room, direct water supply can not be?
Some water pressure is not enough, and since you are multi-storey, you need to add booster pump downstairs
Q:Why does the pump head decrease when the pump flow rate increases?
First of all, the power of the pump is determined by the motor. When the power is certain, work must be done. According to w=mgh, the flow determines mg, the head is h, you think, if the flow rate is large, is the head smaller?. This is theoretical, and at the same time, you see, the water pump characteristic curve can also see that the flow rate increases, the corresponding smaller head.
Q:What motor with Grundfos pumps
Grundfos pumps with the motor Grundfos own.
Q:What are the conditions for the series and parallel connection of the pumps?
Parallel pumps: the pump is required to lift the same. This effect is to increase traffic.Pumps in series: requirements are similar to the flow of water pumps. This allows you to increase the total head and recommend adding small pressure tanks during the series connection.
Q:The diving pump in the aquarium stops and stops on the goldfish
The submersible pump has been on all the time.
Q:Why is water pumping cool water is normal, but when pumping hot water pressure and flow are very small?
You look at what you pump that is, there are manuals to see how much the media can not exceed the degree,

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