Industry-Leading Self-Priming Pump Manufacturer
- No need for a foot valve, highly flexible, easy operation;
- No need re-priming, efficient & cost-saving;
- Semi-open, and closed impellers are available options;
- No clogging, no tangling, superior debris passage;
- Diesel engines, control cabinets, and trailers are available;
- Long service life, easy maintenance, wide applicability.
What is a self-priming pump?
Self-priming pumps, a category of centrifugal pumps also known as self-priming centrifugal pumps, have the key feature of self-priming capabilities. They require no foot valve, with their integral priming ability using a special air-liquid mixing action to vent air from the suction line and pump body, ensuring reliable handling of mixtures. Self-priming pumps can operate reliably when the inlet is not fully submerged, a capability that suits them for applications with a variable liquid source or vaporization.
Self-priming pumps provide reliable fluid transfer for diverse applications including agricultural irrigation, the chemical industry, urban drainage, firefighting, and municipal sewage discharge. The automatic start-stop function of self-priming pumps eliminates the need for manual operation. By combining self-priming operation with proven centrifugal pump technology, these pumps ensure efficient and reliable transfer of even toxic, explosive, or highly corrosive fluids.
Self-Priming Pumps
Most reliable self-priming performance, minimum self-priming time, maximum self-priming lift.
Max self priming head: 9 m
Max flow rate: 550m3/h
Max head: 75 m
Max self priming head: 7.5 m
Max flow rate: 800m3/h
Max head: 90 m
Max self priming head: 7.5 m
Max flow rate: 800m3/h
Max head: 90 m
Max self priming head: 8 m
Max flow rate: 880m3/h
Max head: 85 m
Max self priming head: 7 m
Max flow rate: 200m3/h
Max head: 125 m
Max self priming head: 7 m
Max flow rate: 800m3/h
Max head: 105 m
Self-Priming Pumps - Specialized for Demanding Challenges
Excellent self-priming efficiency, zero leakage, and high corrosion resistance for demanding environments.
Self-Priming Magnetic Drive PumpMax self priming head: 4 m
Max flow rate: 200m3/h
Max head: 80 m
Self-Priming Mag Drive PumpMax self priming head: 4.2 m
Max flow rate: 180m3/h
Max head: 60 m
Self-Priming Magnetic PumpMax self priming head: 5.5 m
Max flow rate: 150m3/h
Max head: 80 m
Self-Priming Magnetic Drive PTFE Lined PumpMax self priming head: 4.6 m
Max flow rate: 220m3/h
Max head: 60 m
Self Priming Magnetic Drive PFA Lining PumpMax self priming head: 4.5 m
Max flow rate: 175m3/h
Max head: 78 m
Self Priming PTFE Lined PumpMax self priming head: 4 m
Max flow rate: 150m3/h
Max head: 65 m
High-Efficiency Self-Priming Pumps from YOUNAI:
- High suction head performance: lifts liquids to demanding heights.
- Large flow capacity: available wide range of models to reach up to the large flow rates.
- Rapid transfer:minimum self-priming time, reducing energy consumption.
- Reliable & cost-effective: stable operation, superior performance, for lower total costs.
YOUNAI: Self-Priming Pumps Tailored to Your Needs
Specializing in engineered fluid systems, YOUNAI provides more than pumps—we deliver comprehensive services. We focus on providing reliable solutions specifically engineered for our customers’ processes. Rely on our engineering team and fluid dynamics lab to solve the challenging pumping cases and keep your processes flowing successfully.
YOUNAI tailors pumping solutions to meet specific needs, including: a centrifugal pump paired with a siphon tank to achieve superior self-priming performance, surpassing a standard self-priming pump; a vacuum pump coupled with a centrifugal pump to eliminate the need for priming process, enabling rapid start-up; customized larger-capacity tanks for enhanced priming capability; vertical installation of self-priming pumps to overcome space constraints on the customer’s site.
Self-Priming Pump Application
Chemical self-priming pumps deliver outstanding self-priming performance, with short priming time and high priming lift. Self-priming magnetic drive pumps ensure leak-free for absolute safety. Available in multiple materials and built for demanding conditions.
Self-priming pumps are simple to install and easy to operate, allowing for quick start/stop, offering customized configurations, and being highly portable. It can even handle small amounts of sand and particles without compromising its lifetime.
Non-clogging self-priming pumps are designed to prevent blockages from debris such as long fibers, leaves and twigs. They are capable of coping with irregularly shaped solids and come with an integrated clean-out port for quick maintenance.
YOUNAI Offers
The self-priming pump is ideal for applications requiring frequent start-ups. It delivers reliable operation, high safety standards, low maintenance, a long service life, and minimal noise and vibration. It is widely used for agriculture drainage and municipal sewage services.
Beyond these, our high-quality self-priming pumps are today seeing growing adoption in the oil and gas industry.
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As a self-priming pump starts, the impeller rotates to generate centrifugal force, which pulls a mixture of air and water into the pump body. The resulting vacuum lowers the presence inside the chamber below atmospheric pressure, causing external water to be drawn in. The impeller then accelerates the mixture and forces it out through the discharge pipeline.
Here’s the drill for starting your self-priming pump for the very first time. First, give the coupling, bearing base, and motor a quick once-over. Then, open the inlet valve and put in enough liquid to fill at least two-thirds of the pump. Once that’s done, close the valve. When it’s running, the pump must turn clockwise as viewed from the motor end. NOTE: Priming with liquid is not necessary for subsequent start-ups.
At YOUNAI, we understand that time is critical in your projects. Our standard delivery time for self priming pumps delivery is just 1 to 2 weeks — a speed that outperforms most competitors and gets your pumps on-site faster. This is made possible because we stock substantial semi-finished products and have a specialized team dedicated to final assembly, testing, and packaging.
Related Pumps
Centrifugal Suction Pump
End Suction Pump
Submersible Pump
Vertical End Suction Pump
Double Suction Pump
Centrifugal PTFE Lined Pump
A self-priming pump only requires an initial filling of the pump casing with liquid. A centrifugal pump requires manual priming of both the entire suction line and pump casing for each startup, unless equipped with an automated priming system. A self-priming pump only need a simple strainer at the lower end of the inlet, and there is no foot valve. Conversely, a centrifugal pump should be fitted with a foot valve or an auxiliary vacuum system to maintain priming.
A quick heads-up on dry running: your self-priming pump can handle it for short bursts, but try to keep it under 30 minutes. During dry running, the rapid rotation of the impeller generates excessive heat due to high-speed friction, which can in turn damage components like the O rings, shaft seal, and bearings through thermal deformation. Frequent dry running also compromises the vacuum environment and significantly reduces pump lifespan.
Compared to horizontal self-priming pump models, vertical type offers several advantages: Its compact structure, externally mixed self-priming design is both simple and efficient. A critical benefit is the enhanced sealing performance and reliability, achieved by positioning the shaft seal in a low-pressure area. Furthermore, the vertical footprint requires less floor space, and mature manufacturing processes for main components lead to a more competitive purchase price.
YOUNAI manufactures a full line of horizontal self-priming pumps, vertical self-priming pumps, and self-priming magnetic drive pumps, covering a wide range of hydraulic performance. Our self-priming pumps are trusted for superior performance: optimized impellers and fluid passages to reduce friction and deliver superior hydraulic efficiency. This provides high operational efficiency, premium self-priming performance, proven reliability, smooth and quiet operation, and an extended service life.
