Shanghai Gaoyu Pump & Valve Manufacturing Co., Ltd. is one of the leading manufacturers and suppliers of self-priming water pump in China. Please rest assured to wholesale customized self-priming water pump from our factory. For price consultation, contact us.
Product Description
This high quality self priming water pump integrates self-priming and sewage discharge functions. It employs a unique hydraulic design where the impeller is housed in a separate chamber connected via a pressurized water chamber. During operation, it generates strong axial vortices, creating a vacuum at the inlet and developing head at the outlet, ensuring completely clear flow channels and exceptional sewage discharge performance. This electric self priming water pump requires no foot valve and can suction and discharge engineering sewage containing large solid particles, long fibers, sediments, and other impurities. It is widely used in municipal, light industry, papermaking, textile, food, chemical, mining, and aquaculture sectors. The 2 hp self priming water pump is the typical model.
Product Features
Efficient Sewage Discharge: This high quality self priming water pump features a clog-resistant impeller design capable of passing solid particles up to 60% of its diameter and fibers 1.5 times the impeller diameter.
No Foot Valve, Easy Installation: Requires no foot valve installation, reducing labor intensity. It is easy to move, install, and maintain, with stable performance. Installation is particularly straightforward for users of the electric self priming water pump model.
Stable Operation: Motor protection class IP68 ensures long-term underwater operation and durability.
Self-Priming, No Need for Priming: Possesses self-priming capability. After the first start, it evacuates air from the pump to create a vacuum for suction, with a typical self-priming height of 4.5-8 meters. The air-liquid separation chamber eliminates the need for priming during subsequent starts.
Wide Application: One of the most ideal impurity pumps for conveying media like solid particles, fibers, and slurries. Multiple power options are available, the 2 hp self priming water pump is one of them.
Operating Conditions
- Nominal Diameter: DN40-DN150
- Head Range: 15m ~ 50m
- Flow Rate Range: 8m³/h ~ 180m³/h
- Power Range: 1.5kW ~ 30kW
- Speed: 2900r/min, 1450r/min
- Ambient Temperature ≤45℃, Medium Temperature ≤60℃
- Medium pH Value: 4-10
- Maximum Medium Density: 1050kg/m³
- Power Supply: 50Hz, Single-phase 220V or Three-phase 380V, voltage fluctuation range 0.9-1.1 times the rated value.
Model/Specifications Table
FAQ
Q: What does "self-priming" mean for a sewage pump, and what are its benefits?
A: "Self-priming" means the pump does not require the pump chamber and suction line to be filled with liquid before startup; it can evacuate air by itself to create a vacuum and draw in liquid. The benefits include eliminating the need for a foot valve and the hassle of priming before each start, making it particularly suitable for applications requiring frequent starts/stops or with fluctuating liquid levels. High quality self priming water pump models are especially reliable in this regard.
Q: Can this pump run dry?
A: Although self-priming pumps have some dry-running capability to complete the priming process, prolonged dry running (without liquid) can damage the mechanical seal and components. Therefore, extended dry running should be avoided, ensuring the pump operates normally after suction is achieved. When selecting an electric self priming water pump, pay attention to its permitted dry-running duration.
Q: What could be the reasons if the self-priming height decreases or priming fails?
A: Possible reasons include: suction line leakage preventing vacuum formation; worn mechanical seal causing air leakage; excessive residue inside the pump affecting impeller operation; or insufficient liquid in the priming chamber. Check pipeline seals, mechanical seal condition, and clean the pump chamber. For models like the 2 hp self priming water pump, also ensure stable power supply voltage.
