What's New
AR North America Company News and Blog
Knowledge Base: Understanding Unloader and Regulator Valves in Triplex Plunger Pump Systems
November 1, 2025
Think of the unloader as a traffic cop that redirects flow when the system is idle, while the regulator is more like a cruise control, maintaining steady pressure during operation. In high-pressure cleaning systems powered by triplex plunger pumps, unloader valves and regulator valves play critical roles in managing water flow and system pressure. While […]
Knowledge Base: Winterizing High Pressure Plunger Pumps
February 24, 2016
Anytime you store go through Winterizing High Pressure Plunger Pump It is a given that when water freezes it expands, if the pump is full of a freezing fluid you may cause some irreversible damage. Broken plungers, damaged packings and ruptured manifolds to mention a few. There are three ways to winterize your pump: Store it […]
AR North America Will Be At The 2016 WETT Show
January 26, 2016
AR North America is excited to attend the 2016 WETT Show also know as the Water & Wastewater Equipment, Treatment & Transport Show. We are excited to bring for the first time the Annovi Reverberi diaphragm pumps, including low, medium and high pressure to the US. AR is the #1 diaphragm pump manufacturer in the world. […]
Trade Show: Visit A.R. North America at CETA / ISSA in Las Vegas
October 15, 2015
A.R. North America is proud to be exhibiting at the Las Vegas Convention Center October 20th – 23rd. Come visit us at Booth #3023!
Knowledge Base: How an AR High Pressure Plunger Pumps Work
October 12, 2015
What a AR high pressure plunger pumps actually do is move a column of water to create a flow. Pressure results from a restriction on than column of water as is the case when the water passes through a nozzle. When we speak of a pump's ability to create a certain pressure at a certain […]
How To Avoid Cavitation Damage
October 11, 2015
Can you identify and avoid cavitation damage? Cavitation is the formation and collapse of gaseous cavities in a liquid which causes severe wear or eroding of the metal wear surfaces in the pump. The most obvious sign of cavitation is a hammering noise. The noise can be either consistent or intermittent depending upon the degree […]
Knowledge Base: Understanding The Pressure Washer
October 10, 2015
Probably the easiest way to understand how a pressure washer functions is to diagnose a unit and see how it is constructed. We have selected a cold water portable unit for this purpose. First you have your power source (engine or motor) this is what created the energy to drive the pump. It and the […]