The flow temperature control (FTC) is used to regulate & maintain fluid temperature for hydronic floor or radiator heating systems. FTC is a self-acting thermostatic sensor, which can be combined with two-way valve body types RA2000 (normally used with straight valve configuration) & RA-C. The water temperature is measured by a surface sensor, which is mounted directly on the pipe surface by means of a strip (enclosed with the product). The snap-lock connector of the sensor element allows a quick and firm connection to the valve without the need for tools.