W.A. Kates Company has been a manufacturer of durable, high quality flow rate conrtollers since 1948. Kates products offer a simple solution to many difficult liquid and gas flow control applications. Just set it........and forget it!\r\n\r\nWe take pride in providing a high quality and high performance instrument that will provide many years of maintenance free service. Our motto "To serve our customers as we desire our suppliers to serve us," exemplifies our commitment to quality and service.