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...
