Harwil was founded in 1956 to conceive of, design, manufacture and market electro-mechanical fluid flow and liquid level switches. All designs are focused on producing simple, reliable, low cost units with broad operating flexibility in a multitude of physical, thermal and chemical operating environments. Customer groups include heavy and light industrial manufacturing, chemical, petroleum production and refining, automotive, transportation, aerospace, nuclear research facilities, government labs, mining, water production/distribution/processing, environmental pollution control, municipal wastewater, shipping, marine, fishing, etc. Harwil supplies direct service to customers of all sizes; from Fortune 500 companies to small, one-person factories. We have a growing list of products that service many diverse O.E.M. industries such as steam generating, water purification, fuel filtering, underground water cleanup, semiconductor fabrication facilities, cooling tower equipment, industrial floor cleaning equipment, pool and spa, etc.