SYSTEME DE SEPARATION Caleffi CAa Type 573415, DN15 (1/2") EUR 80,00 - PicClick FR
521 Adjustable, anti-scale thermostatic mixing valve with check valves | Caleffi International
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Caleffi 252153 Thermal 3/4 Inch External Thread 30-65 °C with Check Valves for Solar Systems, Adjustable Detincification-Free Brass Housing, Chrome-Plated : Amazon.de: DIY & Tools