National Pump Company can cover all of your deep well needs, from precisely matched discharge heads, tubeline assemblies and column pipe, to custom impellers and bowl assemblies to deliver consistent pumping capacity.
National Pumps are hard at work around the world providing dependable service to municipal water systems, agricultural irrigation, mining and industrial applications, as well as some of the world’s premier golf courses. Features include:
- 6” – 30” Hydraulics; Flows to: 25,000 GPM; Heads to: 2,500 feet; up to 2,000 HP
- Cast Iron, Ductile Iron or Fabricated Steel Discharge Heads
- Components available in Cast & Ductile Iron; Silicon, Aluminum, & 304, 316 and Duplex Stainless Steel construction
- Oil Lubricated or Water Injection line shaft
- Threaded or Flanged Column Construction
- Packing or Mechanical Seals
- Certifications (when specified): ISO 9001 Certified Quality Management System, NSF61 & 372 Pump Certification
- Testing to Hydraulic Institute compliance standards
All pump models are stocked in standard materials of construction and can be customized to meet your exact specifications at our various manufacturing locations.
Vertical Turbine Pumps - Commonly Asked Questions
When Should I consider using a submersible turbine pump versus a vertical lineshaft turbine pump?
Guidelines on when to use a Submersible Pump versus a Vertical Turbine Pump:
- When shaft elongation problems occur on a deep Vertical Turbine pump setting.
- When wells are not straight.
- In open sumps where flooding can be a threat to surface mounted motors.
- Where space is at a minimum or where appearance or noise prohibits surface installations.
- In an In-Pipe Booster application mounted in a horizontal, vertical or inclined position.
Does National Pump have NSF 61 certification?
As of September 20, 2019, National Pump has NSF/ANSI/CAN 61 & NSF/ANSI 372 certification for Vertical and Submersible Turbine Pump assemblies. The deep-set Vertical Turbine Pumps are available in configurations that include either oil-lubricated or fresh water flushed enclosed lineshaft or pre-lubricated open line shaft. The short-set Vertical Turbine Pumps are available in either product lubricated or enclosed linshaft configurations. NPC has certified many optional materials to allow our customers the ability to choose the best materials for their specific application. Whether its standard materials, stainless steel or aluminum bronze, we can meet your needs. Bearings options also include bronze, neoprene, marine or vesconite. Wear rings are available in stainless steel or aluminum bronze. Seal options include mechanical seals in split or single cartridge configurations or expanded PTFE yarn packing. Standard coating is Tnemec N-140 Pota-Pox Plus to provide long-lasting protection of the steel components. The complete pump, from the suction to the discharge, is certified to pump drinking water without imparting chemical contaminants or impurities that can affect our health.
What materials are available from National?
National Pump manufactures pumps in a variety of materials to meet our customer’s preference or needs. Bowls and Impellers are available in Cast or Ductile Iron, Cast Steel, Stainless Steel, a variety of Bronzes or Duplex Stainless Steels. Bearing materials are available in Bronze, Marine rubber, and engineered composites.
Can I use a Motor and VFD on a Cast Discharge Head?
When using a cast iron discharge head, National Pump Company can only guarantee vibration free operation at full load speed. A cast iron discharge head may be acceptable for operating at reduced speeds if precautions are made by locking-out the operating speed(s) on the VFD IF vibration is experienced from the natural resonant frequency of the motor and discharge head structure. In some cases, modifications can be made to the discharge head to change the resonate frequency of the structure.
Do you have any installation suggestions on leveling the Pump?
Yes, this info is available in our IOM Manual located on our web site. The preferred levelness is dead level, however, an acceptable tolerance is 0.002 inch per foot. For deep well applications, the leveling of the discharge head is often installed to fit the well straightness, which may exceed the 0.002 inch per foot guidelines.
Does National Pump stock Stainless Steel impellers?
Yes, National Pump stocks both 304 & 316 grade stainless steel impellers, up through 15” designs with no performance corrections.
Is National Pump certified to the ISO 9001:2015 QMS standard?
Yes, all pumps that are required to be built by a manufacturer certified to ISO9001 will be manufactured at National Pump’s plant in Glendale, AZ which is certified by NQA to meeting the ISO 9001:2015 QMS Standard.
What is NPSHR (Net Positive Suction Head Required) mean on the performance curve?
NPSHR is the minimum pressure required at the first impeller of the pump to keep the pump from cavitating (i.e. turning water to water vapor in the pump). This differs from NPSHA (available) which is the absolute pressure at the pump suction. Both values are represented in ‘feet’ of pressure. NPSHA must be a minimum of 3 feet more than NPSHR.
Have a Fluid Handling Problem? We can help you find a Pumping Solution.
John Brooks Company caters to diverse industries, offering suitable pump solutions for nearly all fluid handling needs - including yours! Our success hinges on fostering a collaborative partnership with you, where we help you find a tailored solution to enhance your systems, boost productivity, and minimize operational expenses
Consult with a John Brooks Company Pump expert today to help you determine the most suitable pump type for your application needs.
