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Submersible Sewage Pump

WQ (QW、WQK ) series submersible sewage pump applicable to transport containing solids and fiber of sewage or clean water.

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WQ (QW、WQK ) series submersible sewage pump applicable to transport containing solids and fiber of sewage or clean water.

The temperature of the medium is no more than 40℃, medium density ≤ 1150 kg/m3, and PH value in 5~ 9 range. The altitude does not exceed 1000 meters. Transport medium viscosity cannot be super 1000 CP. Products work operation must be completely submerged, but shall not be more than 10 meters diving depth. The product material basically is cast iron, which cannot be used in strong corrosive or containing the corrosive medium.

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    Fire pumps are a type of pump used in fire fighting. Compared to ordinary pumps, fire pumps have higher standards and requirements in terms of sealing, corrosion resistance and operational efficiency. Before running the fire pump equipment, we need to discharge the gas inside the pump, do you know what is the significance of doing so? The following is the answer from Shanghai Xizhiquan.

    1. If there is gas inside the fire pump, then the equipment cannot form a sufficient vacuum during operation, resulting in the liquid not being able to be sucked up. This phenomenon is called gas binding, and is a phenomenon that often results from many operators not understanding this operation.
    2, understand the formation of gas binding causes, we will understand how to avoid this problem occurs. Before the fire pump equipment is started, the pump casing needs to be filled with liquid. In the pump suction pipe mouth need to be equipped with a non-return valve, can effectively avoid the pump in the liquid due to gravity into the low tank, if the pump position is low, there is no need to carry out filling the pump.
    3. The compressed gas inside the fire pump will occupy a certain space in the fire pump, making it impossible to seal it.

    Therefore, the operation of deflating the fire pump before putting it into use can increase the vacuum of the equipment and increase the pumping capacity of the pump, thus effectively improving the efficiency of the equipment and reducing the waste of resources.