How to choose a small submersible pump for agricultural use
1HDD 5ch PSE NVR,1HDD 10ch PSE NVR Tiandy Technologies CO.,LTD , https://en.tiandy.com
September 23 11:13:14, 2025
The agricultural small submersible electric pump is a vital water-lifting device widely used in rural households for irrigation, domestic use, and farming operations. However, with numerous manufacturers producing these pumps, there is a significant variation in technical capabilities, leading to inconsistent product quality. To ensure you get a reliable and affordable pump, consider the following key factors:
First, choose a reputable manufacturer. It's crucial to verify the brand and certifications of the pump. Avoid "three-no products"—those without a manufacturer, production date, or license. These can be risky and may not meet safety or performance standards. Opt for well-known brands that have a track record of quality and service.
Next, decide between a single-phase or three-phase pump based on your local power supply. If three-phase electricity is available, it's generally better to go with a three-phase pump. These models are typically more compact, lighter, and produce less vibration compared to single-phase units of similar capacity. This makes them more energy-efficient and durable in the long run.
Determining the right pump parameters is essential. Focus on flow rate and head (the vertical lift the pump can provide). The flow should match the water source and your household’s needs. Ideally, the pump’s head should closely match your required lift to maximize efficiency. A deviation of up to 20% is acceptable, as this can still save energy. However, if the pump’s head is too low, it will struggle to lift water effectively—this is known as “small horse pulling a big cart.†Conversely, if the head is too high, it may cause the motor to overheat and eventually fail due to excessive load.
Before purchasing, inspect the pump’s quality. Submersible pumps come in different types, such as water-filled, oil-filled, or shielded. Water-filled models are the most common. Before using, make sure to remove both drain plugs, fill the motor chamber with clean water, and let it sit for about 15 minutes to expel air. Then, re-tighten the plugs. After filling, check the motor’s insulation resistance using a megohmmeter, not a regular multimeter, which may not give accurate readings. Once the insulation is confirmed, test the pump. If possible, run it in a pool for a short time. If not, perform a dry run in the well for no more than 3 seconds to avoid overheating.
Finally, purchase from an authorized dealer or store approved by the Agricultural Machinery Department. Always request a formal invoice to ensure proper support and warranty coverage. Buying from unverified sources can lead to unresolved issues later on.
By following these steps, you can make an informed decision and select a submersible pump that meets your needs while ensuring long-term reliability and cost-effectiveness.