National Pump Customer Service

NPC is Growing - Now Hiring!

April 1, 2024

Come grow your career with National Pump Company! As of Second Quarter 2024 we currently have openings across the country for both front line and management positions.  Please send your application to Glendale, AZ – Pump Assembler, CNC/manual machinist, Impeller balancer/underfiler, Applications / Customer Service, CDL Driver, Shipping & Receiving Olive Branch, MS – Admin […]

Looking for NSF Certified Pumps?

Looking for NSF Certified Pumps?

October 21, 2019

National Pump Company has what you’re looking for!  When NSF/ANSI/CAN 61 & NSF/ANSI 372 certified product is required on your project, we will proudly display the NSF mark on the pump assembly nameplate. This NSF nameplate is confirmation that through rigorous testing, NPC meets or exceeds the safety standards set forth by the U.S. Safe […]


NSF Full Certification Press Release

October 17, 2019

NEWS RELEASE FOR IMMEDIATE RELEASE Oct. 17, 2019   NATIONAL PUMP COMPANY EARNS COMPLETE PUMP NSF CERTIFICATION GLENDALE, Arizona – National Pump Company, vertical turbine and submersible pump manufacturer, has received NSF/ANSI/CAN 61 & NSF/ANSI 372 certification for Vertical and Submersible Turbine Pump assemblies as of September 20, 2019. The complete pump, from the suction […]


Vertical Pump Vibration

May 18, 2018

Primary Factors Affecting Vibration: Separation margin to structural natural frequency   Operating on the structural natural frequency of the discharge head motor assembly will result in unacceptable vibration levels. A field margin of +/-10% is recommended to ensure low vibration levels.   A structural natural frequency calculation or analysis (sometimes referred to as a reed […]


Structural Natural Frequency Analysis

November 28, 2017

Structural natural frequency, also referred to as reed critical frequency (RCF), is the single greatest factor which prevents excessive vibration in a vertically suspended pump. Operating close to or on a structural natural frequency will result in high vibration levels. This high vibration level can result in premature or catastrophic failure of the equipment. Key […]


WATER REUSE through Aquifer Storage Recovery (ASR)

October 12, 2017

In times of need, ASR wells are designed to inject and recover reclaimed water into shallow aquifers for underground storage purposes. National Pump Company (NPC) has worked on various ASR projects to provide well pumps with the testing, designs, and capabilities needed to inject and/or recover water as needed. Below are various Arizona projects that […]


Gain the Knowledge You Need --Attend an NPC Pump School

October 9, 2017

We offer pump training courses at our various branch locations throughout the year. For those new to the pump industry or those who just want to sharpen their skills and knowledge, our pump instructors are full of valuable information. Topics include, but are not limited to: Pump Maintenance Terms of the Trade Pump Parts and […]


304 and 316 Stainless Steel Impellers Now From Stock

July 28, 2017

National Pump Company has developed new impeller patterns specifically to pour 300 series stainless steel impellers, which now provide the same high performance and efficiency as our bronze designs. With fourteen (14) models to choose from, they are available from inventory for a quick turnaround. Flow ranges are from 200 GPM to 3,200 GPM at […]


Understanding Preferred and Allowable Operating Regions

July 12, 2017

The location that the pump operates on the pump curve can play a critical role in the design and evaluation of the pump. Hydraulic Institute (HI) standards recommend or define values based on which region the pump is operating in. The Rotodynamic (Centrifugal and Vertical) Pumps – Guideline for Allowable Operating Region (ANSI/HI 9.6.3-2012) defines […]


National Pump Company Displays New EX-Series Submersible Pump at AWWA ACE17

June 23, 2017

On display at our booth for AWWA ACE17 was the new EX-Series submersible pump. The show, which was held in Philadelphia, June 12th  – 14th drew a large crowd and many attendees stopped by our booth to look at and get first-hand information about this heavy duty submersible pump, designed for aggressive water applications. Features […]