After 30 years in the business, Gary Toothe’s job is to train people in the correct way to use water under pressure for industrial cleaning. “Anybody can buy the equipment. The difference between a good and okay waterblasting company is the people and what they know,” says the training manager for Federal Signal’s Environmental Solutions Group.Unlike vacuuming, which has many variables that affect the job, waterblasting is all about horsepower, pressure and flow.“Given the horsepower of your unit, you’re going to get a given amount of pressure and a given amount of flow,” he says. “As pressure goes up, your
