This Kärcher vacuum switch is an essential part of your pressure washer. It is designed to control the burner and maintain a constant pressure. The model VC100UR is made in Italy and has a 2.5" HG rating. It is compatible with a variety of pressure washers and is easy to install. The brand Kärcher is known for its high-quality products, and this vacuum switch is no exception. Whether you're using your pressure washer for business or personal use, this burner control vacuum switch is a reliable and necessary component.