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Thermostatic valve "AV 9" for manual hydraulic balancing- For use in two-pipe central heating systems with forced circulation. - With externally readable, infinitely variable presetting. - Presetting can be changed under system pressure by means of an operating tool or open-end wrench SW 13.- Valve insert can be replaced without draining the system. - Brass valve, with nickel-plated body, stainless steel stem. Connection for threaded and clamped connections. - Tested and approved according to EN 215.- All thermostatic valves "AV 9" have a white protective cap with 3 frontal webs. - Thermostatic threaded connection: M 30 x 1.5
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