PREMIUM MATERIAL The radiator valve thermostatic head is made of high-quality alloy and plastic, featuring fine workmanship and reliable performance. It is durable, resistant to deformation, and designed for long-term use.4-PIECE RADIATOR THERMOSTAT This professional 4-piece thermostatic radiator valve set includes M30 x 1.5 threaded connections, compatible with radiators that have 30 x 1.5 threaded valves from various manufacturers.INTELLIGENT DESIGN The TRV radiator valve features frost protection and adjustable settings, providing precise temperature control. It includes a liquid-filled sensor and zero-position indicator for accurate regulation. Suitable for compact radiators with integrated valve systems. The adjustment range includes positions 0, *, 1 to 5.NO FIXED TEMPERATURE SETTING RANGE This thermostatic radiator valve responds to changes in room and heating system temperatures, automatically adjusting without a fixed temperature setting range.ADVANTAGE Designed for compatibility with compact radiators equipped with integrated valve blocks, this thermostatic radiator valve offers frost protection and precise adjustment capabilities. It provides reliable performance with a built-in liquid sensor and clear zero-position reference for optimal control.