VAILLANT ECOTEC PLUS 637 837 937 (FROM 2012) GAS VALVE WITH REGULATOR 0020148383
Part number: 0020148383. VU GB 126/5-5ecoTEC plus 612. VU GB 156/5-5ecoTEC plus 615. VU GB 186/5-5ecoTEC plus 618. VU GB 246/5-5ecoTEC plus 624. VU GB 306/5-5ecoTEC plus 630. VU GB 376/5-5ecoTEC plus 637.