Choose the right float valve from the list.
WISA opened a new 1,100 m² Experience Centre next to its head office.
State Secretary Mrs. Jetta Klijnsma launched the Labour Market Participation Act of the region Central Gelderland, in the presence of several entrepreneurs at WISA head offices.
WISA is 150 years old and we are proud of it! In 1865 we started in Arnhem with a metalware factory, founded by WJ Stokvis. Today we are active worldwide in the field of sanitary flushing technology. To mark our 150 years in the industry, we have used the available material to chart the DNA of WISA. We hope that you enjoy reading about our history.