Multi level fire pump price: Zhengji fire pump price

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　　How to choose the price of multi-stage fire pumps

　　High efficiency, low noise, and energy-saving centrifugal pumps should be selected, and obsolete products are strictly prohibited.

　　Multi stage fire pumps should be selected based on the design flow rate and required head, and the pump output should be considered due to wear and other reasons. The slurry pump can be selected based on the calculated head H multiplied by a coefficient of 1.05 to 1.10. For pumps where the water head gradually decreases with increasing flow rate, a characteristic curve should be selected, which is stable in operation and reliable when working in parallel; The working point of the pump should be kept within a high-efficiency range, which not only saves energy but also prevents damage to machine parts. Price of multi-stage fire pump

　　When there is no regulating device in the water supply network, it is recommended to use a speed regulating pump set or a rated speed pump set for operation. The water output of the pump set should not be less than the design water flow rate of the community, and should be checked according to the fire extinguishing conditions.

　　Try to choose lifting pumps for water tanks and towers to reduce the number of pumps, and use them one by one; When a single pump can meet the requirements, it is not advisable to use multiple parallel connections; If multiple parallel operations or large and small pumps must be used, the type and quantity of centrifugal pumps should not be too large, and the number of models should generally not exceed two. The head of a single-stage water purification centrifugal pump should be similar; During parallel operation, each pump should still operate within the high-efficiency zone. Price of multi-stage fire pump

　　Price of multi-stage fire pump

　　The design water supply flow rate of the variable frequency speed regulating pump should ensure that it meets the requirements of the secondary flow rate design in household water supply systems. The power supply of the slurry pump must be reliable; The working point of the pump should be selected within the efficient working area of the pump characteristic curve, rather than the extension line of the QH curve. The most unfavorable operating point in the design should be at the right end of the high-efficiency section of the pump characteristic curve. This point is the point where the pump's output and head are low but can meet the requirements. It is also the intersection point of the high-efficiency region of the pump characteristic curve and the pipeline characteristic curve. In the high-efficiency part of the pump, the working range of the pump governor can be as high as possible; The speed range should be set between 25% and 100% of the pump's water supply; The equipment should have automatic water level control function.

　　The multi-stage pump unit of the household pressurized water supply system should be equipped with a backup pump. The water supply capacity of the standby pump should be greater than that of the operating pump. The pump should automatically switch and operate alternately.

　　Multi level fire pumps should be equipped with the same motor voltage, and the power system should be the same as the national power grid power system. Price of multi-stage fire pump

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