National Pump Company
At Process & Power, we proudly supply National Pump Company, a leading manufacturer of vertical and submersible turbine pumps serving agricultural, municipal, industrial, and commercial markets. With decades of expertise and a reputation for quality, National Pump provides pumping solutions designed for efficiency, reliability, and long service life in critical water movement applications.
Product Highlights
Vertical Turbine Pumps – Ideal for deep well, irrigation, and municipal water supply systems.
Submersible Turbine Pumps – Efficient, space-saving solutions for groundwater and well applications.
Mixed Flow Pumps – Engineered for high-volume, low-head applications such as flood control and cooling water.
Axial Flow Pumps – Designed for moving large volumes of water at low heads, perfect for drainage and circulation.
Engineered Pump Packages – Custom systems tailored to meet specific project and performance requirements.
Why Choose National Pump?
Trusted name in turbine pump technology with decades of experience
Wide product range covering agriculture, irrigation, and municipal water supply
Engineered for dependable performance and long-term efficiency
Contact Process & Power for National Pump Company Products
Located at: 1721 Corporate Avenue • Memphis, TN 38132
Call us at: (901) 362-5500
Contact Us
National Pump FAQ
What National Pump equipment is featured?
The page presents vertical and submersible turbine equipment, with options for water supply and larger-volume pumping applications.
Are vertical turbine pumps centrifugal pumps?
Yes. Vertical turbine pumps use rotating impellers and are a type of centrifugal pump. Their arrangement differs from a typical horizontal end-suction installation.
When is a multistage turbine arrangement useful?
Multiple stages build the head needed for a selected duty. Stage count should come from the performance requirement and assembly limits, not the well depth alone.
Can National Pump equipment serve irrigation applications?
Suitable selections may support irrigation and water supply. Provide seasonal demand, water-source behavior, and discharge-system details for evaluation.
What is the difference between high-head and low-head duties?
High-head duties require more pressure rise, while some drainage or circulation applications prioritize large flow at lower head. Select the hydraulic design accordingly.
Why should the driver and pump be selected together?
Speed, torque, thrust, and operating range must be compatible. An existing driver should be evaluated before it is reused with a changed pump assembly.
What measurements are needed to size a turbine pump?
Provide flow, total head, pumping water level, well or sump dimensions, and available power. Include seasonal drawdown and discharge losses so selection reflects the actual operating conditions.
How is a vertical turbine pump different from a submersible turbine pump?
A typical vertical lineshaft installation has its driver above the liquid, while a submersible arrangement places the motor below. Installation geometry, access, and operating conditions influence the choice.
Why has the pump lost pressure or capacity?
Changing water levels, wear, restrictions, incorrect speed, or air entering the intake can reduce performance. Compare current measurements with commissioning data and the pump curve.
Why is my vertical pump vibrating?
Potential causes include alignment, shaft or bearing wear, structural resonance, and poor intake conditions. Evaluation should consider the complete assembly and its operating speed range.
Why does intake submergence matter?
Insufficient liquid depth above the intake can encourage vortices and air entry. Required submergence depends on the pump, flow, and intake geometry and should be checked during selection.
Can these pumps run dry?
Do not assume dry operation is permitted. The bowls, bearings, and motor cooling arrangement may depend on water; review the model's lubrication and minimum-level requirements.
What should a turbine-pump maintenance plan include?
Follow the specific assembly's instructions for bearings, lubrication, seals or packing, and drive alignment. Trend water levels, flow, pressure, current, and vibration to identify changes.
Can an existing turbine pump be rebuilt or upgraded?
Evaluate the bowls, shafting, column, bearings, and driver alongside current duty requirements. Available parts and removal costs help determine whether rebuilding or replacement is practical.
How can I get local support for National Pump?
Contact Process & Power at (901) 362-5500 with your location, equipment identification, and application or service concern. The team can review selection, parts, and service options for your needs.
What should I send when requesting a quote?
Include the required duty, fluid or process details, operating conditions, utilities, and installation dimensions. For existing equipment, add nameplate photos, model and serial numbers, and a description of the problem or planned change.