End Suction Pumps Overview
The end suction pump is a centrifugal-type pump featuring a single-stage, single-suction cantilever design with one impeller. These pumps boast of foot-mounted or OH2 centerline-mounted structure with back pull-out structure design, thus making them to be one of the most widely utilized pump styles in chemical and general industrial applications. As best-selling pumps, YOUNAI’s end suction pumps delivery high quality and performance, offering outstanding efficiency, long service time, and proven reliability.
End suction pumps are used in various industries due to their compact structure and ability to operate with high efficiency. YOUNAI end suction pumps reliably handle clean water, chemical fluids (e.g., brine, caustic soda, phosphoric acid, and nitric acid) as well as mildly abrasive medium(< 8% solids content). Conforms to API610 standard, YOUNAI OH2 end suction pumps are proven to be well performanced in petrochemical refining, hydrocarbon processing, and coal-to-liquids applications.
End Suction Pumps
Widest range of uses, most reliable performance, specialist in end suction pump manufacturing.
Max flow: 16000 m3/hr
Max head: 150 meters
Max temperature: 150 °C
Max flow: 900 m3/hr
Max head: 125 meters
Max temperature: 80 °C
Material of Construction
Closely following the frontier developments of materials science, at YOUNAI we manufacture superior end suction pumps and use specialized materials to meet demanding pumping challenges.
Carbon Steel End Suction PumpRobust general-service pump for water and non-corrosive industrial fluids.
Stainless Steel End Suction PumpThe commonly used corrosion-resistant materials have a relatively low grade of corrosion resistance.
Duplex Stainless Steel End Suction PumpChloride-containing fluids, seawater and aggressive saline environments.
Titanium End Suction PumpBrine, seawater, salt water, high-chloride ion, concentrated nitric acid, fuming sulfuric acid, wet chlorine gas, etc.
Nickel End Suction PumpSuperior alkali resistance for caustic solutions and high-temperature alkaline processes.
Hastelloy End Suction PumpHigher-grade alkali resistance, higher grade of high-temperature alkali resistance processes.
YOUNAI PUMP: High-Quality, Premium Performance
YOUNAI is revered for its high-quality end suction pumps and comprehensive services, all benefiting from our decades of deep industry cultivation and professional engineers’ passion for the pump industry.
Superior performance comes from optimized flow channel design and advanced pump structure.
Heavy-duty reinforced shaft & extended bearing span ensure vibration-free operation.
Our pumps operate reliably for a long time with a low failure rate, providing customers with the minimum unplanned downtime.
Back pull-out pump structure allows for maintenance without disassembling pipelines, convenient and easy installation.
Our customers in the petrochemical and chemical industries often have demanding and diverse requirements for the transportation of high-temperature, corrosive, and flammable liquids. We find an optimum solution together with our customers and master every challenge.
Optimized impeller design achieves high efficiency across wide operating ranges, while significantly expanding application possibilities in diverse industries.
Quality Assurance-Test Run
Customers keep choosing YOUNAI end suction pumps – Step into our workshop: You’ll see, we do pump test run like this every day. Busy test platforms due to large orders. Each end suction pump undergoes performance testing before shipment. We don’t just build pumps; we build trust that flows from our production line to your site.
Support Your Needs
Give your specifications; Find your ideal solution; Let’s identify end suction pumps match your needs.
- Need to customize end suction pumps.
- Need spare parts of end suction pumps.
- Meet your specifications, match operating conditions, customize end suction pumps, achieve your demands.
- YOUNAI is more than a pump manufacturer; we are a one-stop supplier of fluid transfer solutions and equipment, including gearboxes, valves, compressors, and agitators.
- Customized & Flexible Manufacturing.
- Flexible payment terms.
The end suction pump has a suction inlet at the casing’s end, enabling axial fluid entry and radial discharge through casing volute. Its name derives from the suction inlet positioned at the “end” of the casing, allowing fluid to enter axially and discharge radially through a volute. An end suction pump works by utilizing the high-speed rotation of the impeller, then the fluids flows axially into the impeller, under the action of centrifugal force, is expelled radially from the impeller, thereby sending fluids to a high lift.
The end suction series pumps, also known as single-stage single-suction cantilever pumps. There are four types of impellers: closed impeller, semi-open impeller, open impeller, and vortex impeller. The closed impeller is used for clean fluids and provides higher head and efficiency; the semi-open impeller is used for fluids containing a small amount of particles or crystals, balancing pass-thorough capability with relatively high efficiency; the open impeller is used for pulp containing paper fibers with a concentrations below 8%, belong to typical low-concentration pulp pumps; the vortex impeller is used for medium containing long fibers and medium-concentration paper fibers. Among these, the most common type is the closed impeller.
- We have a professional and experienced team of technical engineers, which guarantee correctness of the pump models and the selection of materials – whether dealing with corrosive medium, high-temperature medium, or medium containing particles – and having successfully overcome numerous challenging pumping solutions.
- We stock a wide range of pump model casings, a wide of impeller types, and all kinds of frames, which benefits for shortening delivery time.(thus, you’ll get your pumps quickly)
- Customers enjoy high-quality pumps at YOUNAI factory-direct pricing, keeping purchases comfortably within your budget.
Related Pumps
Double Suction Pump
Split Case Pump
Multistage Pump
Mixed Flow Pump
Self-priming Pump
Axial Flow Pump
Applications of End Suction Pumps
As the most widely used type of pump, end suction pumps can be found in almost any industrial field. The widely application scenarios can be roughly divided into four categories, covering agriculture, general industry, chemical, and petrochemicals.
- Clear water
The end suction pump has compact structure, back pull-out design, flexible inlet and outlet layout. The closed impeller end suction pump can achieve a high head, high efficiency and low energy consumption. Made from cast iron or carbon steel, they are used for agricultural irrigation, drainage, water supply, and the discharge of wastewater from chemical plants. That’s a very economical and practical type.
The end suction pump is equipped with a diesel engine, a mobile wheeler and a control cabinet, that is, a small vehicle-mounted fire-fighting centrifugal pump. This is also a very common form.
- Chemical medium
The end suction pump applied in the chemical industry conforms to API610 standard. Material selection matches the physical and chemical properties of meidum, ensuring corrosion resistance and high-temperature resistance, as well as a long lifetime and reliability. Smooth flow paths and high-precision machined impeller blades ensure high efficiency and better cavitation performance. The heavy-duty shaft and extended bearing spans are enable to operate smoothly for high specific gravity medium. Mechanical seals and flushing systems contribute to end suction pumps reliably handle severe chemical medium, ensuring the long-term stable and leak-free operation of the pump unit.
- Chemical slurry, pulp
Open impeller end suction pumps are designed for conveying complex mixed fluids containing pulp fibers, air and water. They can handle pulp, chemicals, mechanical pulp, secondary fibers, pulp cooking liquors, green liquid, white liquid, thick black liquid and bleaching solutions in paper mills. The optimized double-flow pulp pump efficiently and smoothly transfers pulp with a concentration of 8%. Their characteristics are small pulsation and high efficiency.
- High temperature, petrochemical
The high-temperature pump that complies with the API 610 standard has OH2 centerline mounted structure to resist thermal deformation. Double mechanical seals with cooling/flushing/sealing liquid systems handle extreme temperatures or severe working conditions easily. The pipeline system follows API specifications. They are used for dealing neutral or corrosive liquids at low or high temperatures.
How to Purchase the Right End Suction Pumps for Chemical Plants?
Are you responsible for purchasing end suction pumps for a chemical plant? Here provide eight simple and effective tips for choosing chemical process end suction pumps for you, which would greatly facilitate the procurement of chemical equipment.
The end suction pumps in chemical factories are used for pumping chemical fluids. These medium are quite different from clean water. Some of them have complex physical and chemical properties, some have a high specific gravity, and some have high temperature or ultra-low temperature. The correct procurement of end suction pumps is necessary to ensure their normal operation after installation.
- Identify whether the medium is clean, contains particles, crystals, or is viscous. This is the first and critical step in selecting the pump series and determining the impeller types for the end suction pump.
- Temperature directly influences material selection and support structural components.
- Three important specifications – flow rate, head, and speed – determine the specific model of the pump.
- PH level, the acidity or alkalinity of the fluid. Different pump materials should be compatible with different medium pH values.
- Corrosivity and toxicity of the fluid determines which sealing form to adopt.
- Confirm voltage and frequency. Determine whether it is 50 Hz or 60 Hz.
- Determine the motor brand, which is closely related to the procurement cost.
- Additional accessories. Bundling essential spare parts with purchases reduces shipping costs and time.
End suction pumps used in chemical plants have strict requirements for performance and material. The flow rate, head, and efficiency must meet the requirements. Collaborate with a professional chemical pump manufacturer and experienced technical engineers can efficiently and accurately select excellent end suction pumps. Meanwhile, this will minimize risks and lifecycle costs for customers.
For brine, seawater, saline medium, you can select stainless steel for pump’s wetted parts. Duplex stainless steel is the better choice when the chloride ions in the fluid is high; Super duplex stainless steel or titanium is recommended for caustic soda, alkaline, inorganic salt, soda ash, which has excellent corrosion resistance performance; For Hydrofluoric acid, hydrochloric acid and phosphoric acid, nickel or nickel alloys should be selected. If temperatures of these mediums exceed 120℃, then upgrade Hastelloy. For sulfuric acid at ambient temperatures, choose the PTFE-lining-centrifugal-pump, which is a cost-effective solution with excellent acid resistance.
The petrochemical, refinery, textile, and pharmaceutical industries require high-temperature working conditions. During the operation of end suction pumps, the high-temperature fluids would be an impact on the structure of the pump body, potentially causing problems such as thermal deformation of the sealing ring, deformation of the impeller, and deformation of the sealing surface. These issues affect the stable operation of high-temperature end suction pumps.
The OH2-type pump utilizes a centreline-mounted, single-stage overhung structure, ideal for high-temperature fluid applications. The pumps are mounted on a distortion-free one-piece casing base plate. Centerline-mounted structure effectively reduces thermal expansion risks. The medium temperature ranges from 250 to 400°C (482°F to 752°F). An additional heat-insulating jacketed casings and covers can be added to, which is more conducive to stable and safe transportation of high-temperature fluids.
Such tailored design exemplifies the value of customized pumps, addressing extreme operational challenges like transportation of fluids at ultra-high temperature or ultra-low temperature.
The main components of a suction pump include: impeller, pump casing, pump cover, shaft, seals, bearings, bearing housing, bearing glands, base plate. Wetted parts including impellers, pump covers, pump casings (flow channel components) – the degree of optimization of the hydraulic model determines the efficiency and energy consumption; Structure support components including shafts, bearing housings, and base plates determine the stability of the pump during operation; Other components including bearings, mechanical seals are selected based on the customer’s budget. The manufacturing requirements for water pumps are relatively low, while for chemical pumps, it is a totally different framework.
