5/09/2016
Triplex plunger pumps
Triplex plunger pumps are the most common types of pumps used in the pressure washer industry.
The majority of these pumps have solid ceramic plungers or pistons that
move the water through the pump and hold pressure created by the nozzle
restriction at the end of the spray wand.
These ceramic plungers are very hard and make an excellent seal for high
pressures but are not indestructible.
Ceramic plungers can become brittle when the pump is run without water,
causing thermal shock. Thermal Shock
occurs when the ceramic plungers are heated due to the friction of the dry
plunger moving against the pump seals from lack of water to the pump. The
introduction of cool water to the heated plunger will cause a crack or cracks
usually ruining the length of the plunger.
The cracked plunger then allows water to leak past the seals and can be
visible by a water leak between the manifold and crankcase of the pump or by
turning the oil in the crankcase a milky color due to the emulsification of the
oil and water mixture. This will cause a
lack of lubrication then overheating, then, catastrophic failure such as thrown
connecting rods etc.
The typical scenario might be as follows: One attaches the garden hose to the pressure
washer, then the high pressure hose to the machine; one starts the machine
expecting water to come spraying out,
then one realizes after a minute or two, that the water is not turned on.
One then turns on the water to the running
pump with heated plungers causing the plungers to break and leak. Always have water flowing to your pump before
start up.
4/27/2016
Hose Reels:
When mounting hose to hose reels please remember to take the QC's or twist Couplers off and mount the hose direct into the hose reel.
1800.226.2646
www.watercannon.com
http://www.watercannon.com/c-239-hose-reels.aspx
4/26/2016
4/21/2016
Pressure washer pump assemblies
Water Cannon custom builds
pressure washer pump assemblies for most any application. Gravity fed pumps
from a tank to barrel simply supply water to the pump inlet and recirculate the
bypass line back to the tank.
With pressure up to 8000PSI and
flow rates to 140GPM Water Cannon supplies ready to work pressure washer pump
solutions.
Visit us online www.watercannon.com
or call our industry trained professions 800.333.9274
4/14/2016
Jetting nozzles
Water Cannon is your Sewer Jetting Headquarters. We’ve got jetting nozzles ranging in size from 1/8 inch for household drains and traps, up to the industrial, 1 inch, 25 gallon per minute nozzles to get through the toughest lines. For clearing culverts or downspouts, we have rotating nozzles to clear the inside walls and back flush the debris for clean flow through. Water Cannon sells Spinner nozzles for ducts, barrels and storage tanks of all sizes.
1800.226.2646
http://www.watercannon.com/c-210-parts-accessories.aspx
3/15/2016
Water Cannon has repair parts and kits :
Water Cannon has repair parts and kits to fix
your pump. In so many cases we find or should I say cannot find the label
that has the model number on the pump as shown in this picture. Of course
this is critical to ensure we send you the correct parts to fix your pump problem. A Picture like this is worth a thousand words.
Sometimes we can identify the pump even without the head or manifold
removed as shown. This can be a little like the crime dramas you see on
TV. I call it: PSI. Pump Scene Investigation. I can
tell by the picture that is a belt drive. I can see by the crankcase
of the pump and shape of the manifold that this is a General Brand Pump.
To identify the pumps actual model number, with the manifold already removed,
you can measure the outside diameter of the white ceramic Plunger or
piston in millimeters. That will give us the bore of the pump piston.
To measure the stroke or how far back and forth that same piston travels, hold
a ruler next to the piston as you turn the crankshaft of the pump and
then see how many millimeters in one direction the piston travels.
If the label is missing from your pump, all of this information combined will
ensure the correct pump identification. Call Water Cannon to
order the correct parts to get you back up and running, right the first
time.
In looking at the pump that we just talked about above, your
eagle eye may have picked up the crack running down the length of the piston.
This crack is caused most often by what is known as “Thermal Shock”.
Thermal Shock is what happens to a piston or plunger when it sees a drastic
temperature change usually from hot to cold. The most common
example is when a pressure washer is started before the water is turned
on. The friction from the dry plunger against the seals can heat up
in seconds. It may be too late before the operator realizes that there is
no water to the pump. By the time the user gets the water
turned on, the plungers are hot. When the cold water is
introduced, this shocks the ceramic and a crack is formed. This
will cause the seals to fail and leak water back into the
crankcase. If left undetected, catastrophic damage can occur such as thrown
connecting rods due to poor lubrication. The moral of the
story: Always have water flowing through the pump before start up.
Written by Jim Grode
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