Stepless presetting - Brass - Nickel-plated - Presetting is done by means of presetting key 1183962 or key SW 13 - For two-pipe central heating systems with forced circulation - Not suitable for heating systems with steam - The valve inserts additional technical features: - Dimension thermostatic connection M30 x 1.5 - Version (1) internal thread/external thread - Automatic flow control No - Operation thermostatic with knob - Size radiator connection 1/2 in - Height 27mm - KV-2 value 0.67 - Kvs-value 1 - Opposed flow direction No - Thermostatic preparation Yes - Shortened length No - Pre-adjustable Yes - Body material Brass.