VAILLANT ECOTEC PLUS 824 / 831 / 837 & PRO 24 / 28 GAS VALVE 0020110995
VAILLANT ECOTEC PLUS 637 & VU 376/3-5 R1 GAS VALVE. VAILLANT ECOTEC PLUS 637. VAILLANT ECO TEC PLUS 824. VAILLANT ECO TEC PLUS 831. VAILLANT ECO TEC PLUS 837. This is a genuine part and is fully functional.