Changsha Zoomlian Pump Co., Ltd. 长沙中联泵业股份有限公司

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    • Water supply equipment without tower
    • Water supply equipment without tower

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    Constant Pressure Water Supply Equipment

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    Pump

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    Water supply equipment without tower

    Flow: 20-50000m³/h 

    Lifting height: 10-300m 

    Price: 2.95-30.5 ten thousand 

     

    The towerless water supply equipment is a broad term that also includes non-negative pressure water supply equipment, constant pressure and variable frequency water supply equipment, etc. These devices do not require the construction of water towers. Due to their advantages of low cost, small space occupied, energy saving, and stable water supply, they are widely used in business and public units, residential areas, and in the production, life, and use of water in rural offices. 

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    Product Description Product Specifications Why Choose Us? FAQ

    Product Description

    　　The towerless water supply equipment is a broad term that also includes non-negative pressure water supply equipment and constant pressure variable frequency water supply equipment. As its name suggests, it is a water supply equipment without a water tower, where the water tower refers to the elevated water tower, originally built with bricks. Towerless water supply is not simply a variable frequency water supply equipment. These equipments do not require the construction of water towers and, due to their advantages such as low cost, little space required, energy saving, and stable water supply, are widely used in business units, residential areas, and in production, life, and rural offices.

    Product Parameters

    Features of the fully automatic non-tower water supply equipment

    　　 1. Significant economic benefits: by using this equipment, it is not necessary to build a water tower or install a tank on the roof, which reduces construction time and project costs, in addition to overcoming issues such as large pressure fluctuations and frequent starts of the water pump.
    　　 2. Rigorous design: this equipment uses constant pressure control with a frequency converter for the water pump, maintaining constant pressure at the pipe outlet regardless of changes in the water consumption of the system.
    　　 3. Reliable operation: the equipment uses a frequency converter and high-quality domestic pumps, with complete protection functions and automatic/manual switching, ensuring very reliable operation. In addition, it has good performance, flexible control, and high resistance to interference.
    　　 4. High efficiency and energy saving: the equipment adjusts the speed of the pump according to the user's water consumption, keeping the pump always in its high-efficiency zone, with notable energy savings, up to 35% compared to constant speed pumps.
    　　 5. Simple operation: the "Water Supply Equipment Promotion Center" is always at the forefront of technological development. The new generation of equipment uses fully automatic control, PID regulation, keyboard operation, and a human-machine interface (text, numbers). The operator only needs to change the switch of the electrical control cabinet to achieve the desired working conditions, allowing for fully automatic and unattended operation.
    　　 6. Complete protection functions: it has automatic protection against overload, short circuit, overvoltage, undervoltage, phase loss, overcurrent, short circuit, and lack of water. In abnormal situations, it can issue alarms, perform self-diagnosis, and determine faults.
    　　 7. Takes up little space and is easy to install: the complete set only includes a water supply control cabinet and a group of pumps, making installation very simple and convenient.
    　　 8. Extends the service life of the pump and motor: it can perform reliable soft starts for multiple groups of pumps, avoiding impacts on the power grid and the piping network, and alternating operation, which considerably extends the service life of the pump and motor.

     

    Scope of application of the fully automatic non-tower water supply

    　　1. High-rise buildings with ponds, hotels, schools, urban communities, business units, and rural construction for domestic use.
    　　2. Water for domestic or production use in factories and mining companies.
    　　3. Supply and drainage in water treatment plants, supply stations, wastewater treatment plants, agricultural irrigation stations, etc.
    　　4. Centralized hot water supply in high-rise buildings, communities, and business units.
    　　5. Water pressurization for cooling and circulating water in production and daily life.
    　　6. Constant pressure transportation of oil in pipelines, tanks, and oil stations.
     

    Working principle and advantages of the fully automatic non-tower water supply

    When the non-tower water supply equipment is put into operation, the water from the supply network enters a flow stabilizing tank; the air inside the tank is expelled by a vacuum eliminator, which automatically closes when the tank is filled with water. If the pressure of the supply network is sufficient to meet the demand, the system supplies water directly to the network through a bypass check valve. If the pressure is insufficient, the pressure signal is sent to the variable frequency controller, which operates the pump and automatically adjusts the speed to maintain constant pressure according to consumption. When the pump reaches industrial frequency speed, another pump with a converter is activated. If the flow of the network is greater than that of the pump, the system maintains normal supply; during peak hours, if the flow of the network is less than that of the small pump, the water from the stabilizing tank is used as a supplementary source, while air enters the tank, destroying the vacuum and ensuring that there is no negative pressure in the network. After peak hours, the system returns to normal supply. If the network runs out of water, the tank level drops and the detector sends a signal to the controller to stop the pump and protect the equipment. At night, when the flow is low and the pressure insufficient, the pressure tank can store and release energy, avoiding frequent starts of the pump.

    　　1. The fully automatic non-tower water supply equipment does not require personnel for its management, is convenient, and replaces the construction of towers and elevated tanks, allowing for fully automatic supply; the supply continues for a time after maintenance or power outages.
    　　2. The supply pressure of the equipment can be freely adjusted to ensure the desired effect for the customer.
    　　3. It uses advanced anti-corrosion treatment technology, the water does not easily get contaminated, inhibits the growth of bacteria and organisms, has seismic and lightning protection features, and is eco-friendly and non-polluting.
    　　4. Does not require tower construction, low investment, and little space; uses automatic regulation of water and air, automatic operation and energy saving, automatic connection with the water network; can supply water after power outages and does not require supervision for years after startup.
     
     
    　　To consult the performance parameters, please visit the pump selection page directly.
    Changsha Zhonglian Pump Industry Co., Ltd.

    Why Choose Us?

    Changsha Zhonglian Pump Industry Co., Ltd. was established in 1989, following the reform of the Changsha Water Pump Factory. It is a national high-tech comprehensive enterprise integrating design, research and development, manufacturing, and service. The company was listed on the Hunan Provincial Stock Exchange on December 31, 2019, with the abbreviated name "Zhonglian Pump Industry" and stock code: 600275HN. It is currently a key enterprise in China's centrifugal pump industry and one of the leading domestic manufacturers of multi-stage pumps, headquartered in Changsha, Hunan, a historical and cultural city in China.

    Changsha Zhonglian Pump Industry Co., Ltd.
    Changsha Zhonglian Pump Industry Co., Ltd.

    FAQ

    Q

    What products do you mainly produce?

    A

    Zoomlion Pump Industry manufactures various large industrial centrifugal pumps. The main products include: self-balancing multistage pumps, multistage centrifugal pumps, single-stage centrifugal pumps, split-case pumps, chemical pumps, submersible pumps, pipeline pumps, long-shaft pumps, condenser pumps, and more.

    Q

    Can you help me choose a model?

    A

    Of course! If the water pump model is not selected accurately, it can cause significant problems. After you take it back, it might be either too small to meet the usage requirements or too large, resulting in higher electricity and fuel costs, increasing the operating expenses.

    Q

    Why is the price quotation so slow?

    A

    Because centrifugal pumps are non-standard custom products with many models and a wide price range. Even for the same model, the price varies greatly depending on the materials and configurations used. Taking the most common pump accessory—the impeller—as an example, the price of a stainless steel impeller is several times that of a cast iron impeller. Therefore, we need to clearly confirm the relevant information to provide you with an accurate price. Normally, if you provide comprehensive information, we can quote within 5 minutes.

    Q

    What information should I provide when I need a quote?

    A

    Usually, if you want to get an accurate quote, it is recommended that you provide us with the following information: pump flow rate, head, on-site operating voltage, frequency, temperature of the conveyed liquid, pH value, solid particle content, on-site installation conditions (horizontal or vertical installation), and other related details. If you are not very familiar with these, it’s okay; our sales manager will assist you in determining them.

    Q

    Do you have centrifugal pumps in stock?

    A

    There are many models and configurations of centrifugal pumps. Except for a small number of commonly used standard models that are in stock, the vast majority of models and configurations are not stocked and are customized products. We need to first select the pump based on your site conditions such as flow rate, head, medium temperature, pH value, and installation conditions. After determining the pump model and configuration, we can then place an order with the workshop for production.

    Q

    What is your usual delivery time?

    A

    Models in stock can be shipped by the next day at the latest. Others are custom-made, and depending on the product size and specific project conditions, the delivery time is generally between 7-90 days. Please consult our sales manager for details: 0731-88632200 。

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