VAILLANT ECOTEC PLUS 637 837 937 (FROM 2012) GAS VALVE WITH REGULATOR 0020148383
Vaillant range. ECOTEC PLUS 637 VU 376/5-5 2012-2012 – 41-044-65. ECOTEC PLUS 637 VU 376/5-5 A R4 2015 ONWARDS – 41-044-85. ECOTEC PLUS 637 VU 376/5-5 R1 2012-2013 – 41-044-65 R1. ECOTEC PLUS 637 VU 376/5-5 R2 2013-2014 – 41-044-65 R2.