①. Radiator thermostat - thermostatic head: 1/2 inch thermostatic head has frost protection in the position marked (*). Thermostatic head is a radiator temperature regulator that allows you to maintain the desired thermal comfort in the room, taking into account heat gain from other sources, i.e. heat gain from people, lighting, sunlight. ②. The thermostatic head is designed according to the PN-EN-215-2005 standard. ③. Suitable for block houses, single-family/multi-family houses. ④. Max. temperature: 110 °C ⑤. The thermostatic inserts and valves from the following companies are suitable for the head: Ferro, Idmar, Perfexim, Purmo, Danfoss, Herz, Schlosser. ⑥. TECHNICAL DATA: Handle color: white. Connection: M30 x 1.5. Sensor type: liquid. Temperature adjustment range: 6-28°. Maximum allowable static pressure: 1.0 MPa. maximum permissible pressure difference: 0.1 MPa. Setting range: Position (0 - 0 °C); Position (* - 6 °C) (frost protection); Position (1-12°C); Position (2–16 °C); Position (3–24 °C); Position (4–26 °C); Position (5–28 °C). ⑦. How to choose the right radiator valve head? When choosing heads, check the dimensions of the valves they will be screwed onto. Check that your valves are the correct size. The appearance of the valve may be different, but the most important thing is its dimensions.