AR North America Will Be At The 2016 WETT Show

wett 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.  These pumps have flows from 3.5 to 238 GPM and pressures up to 725 PSI.

We also will showcase our plunger pumps used in residential, commercial, industrial and specialty applications.  Our sales team will be happy to answer any questions.  Find us on the WETT show floor in booth 1121.

See you at the show…

Visit A.R. North America at CETA / ISSA in Las Vegas

issa interclean ceta show 2015A.R. North America is proud to be exhibiting at the Las Vegas Convention Center October 20th – 23rd. Come visit us at Booth #3023!

How an AR High Pressure Plunger Pumps Work

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 flow, what we really mean is that the pump is capable of moving that amount of water per minute through a nozzle or restriction which actually creates the specified pressure.

In order to create a flow of water, most pumps used in the pressure cleaning industry rely on a system of valves and cylinders. The movement of a plunger or piston in the cylinder draws water through the inlet valve and the upstroke expels it through the outlet valve. Continue reading

How To Avoid Cavitation Damage

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 of cavitation and damage to the pump. Vibration of the pump and system will also be noticeable as the pump is starved of fluid. Eventually flow and pressure will decrease.

Check your system for these conditions which may contribute to, or directly cause, cavitation damage:

  1. Inadequate inlet line size
  2. Insufficient inlet flow or excessive suction
  3. Excessive inlet line length
  4. Rigid inlet plumbing
  5. Too many elbows and/or fittings
  6. Excessive temperature build-up or pumped fluid
  7. Air leak in inlet plumbing
  8. Agitation in supply reservoir
  9. Inadequate increase of inlet flow for fluids of greater specific gravity
  10. Inadequate increase of inlet flow for higher temperature fluids
  11. Clogged inlet filters.
  12. Must use ‘full port’ valves and fittings.

It is important to carefully check your system during assembly and operation to avoid the serious damage that can be caused by cavitation.

If you have any concerns about your system, contact your representative for assistance.

The Pressure Washer

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.

  1. First you have your power source (engine or motor) this is what created the energy to drive the pump. It and the nozzle are what determines the cleaning effect.
  2. The heart of any pressure washer system is the high pressure pump. They are a positive displacement reciprocating type pump – either plunger or piston version. Plunger is the most common as they are more efficient and have longer life. Plungers are usually made of ceramic which is very hard and less prone to wear. Plunger pump can be described as a plunger that moves back and forth against a stationary seal or packing. Whereas a piston pump is where the packing is attached to the piston rod and moves against a smooth cylinder wall. Piston pumps generally have better priming characteristics but cannot operate at as high a pressure and have shorter life.

Continue reading

The Role of the Unloader

The trigger gun and unloader valve are the two main components of the most common safety system for high pressure cleaning equipment.

Essentially, depressing the trigger allows water to flow out of the system through the nozzle under pressure while releasing the trigger diverts water flow back to the pump. The pump, however, continues to run.

The gun, with the unloader valve, forms a valve system which gives the operator immediate control of water flow or, in some types of systems, pressure. Water flow can be turned on or off by depressing or leasing the trigger, or in “dump gun” systems, system pressure can be drastically reduced to safe levels.

Continue reading