Honeywell VK8515MR4571 gas valve

Honeywell VK8515MR4571U gas valve — original combined valve with pressure regulator for Vaillant and Protherm boilers. Ensure stable and safe gas supply to your gas boiler with the original Honeywell VK8515MR4571U gas valve. This modulating combined valve is specially designed for wall-mounted gas boilers Vaillant (AtmoTEC, TurboTEC pro/plus, ecoTEC) and Protherm (Gepard, Panther, etc.). It guarantees precise gas flow regulation, stable pressure, and reliable operation of the entire heating system. Honeywell VK8515MR4571U is a proven solution from a world leader in gas automation, providing high energy efficiency, safety, and long service life for your boiler. Key advantages: Built-in pressure regulator (MR) — maintains stable gas pressure regardless of inlet fluctuations. Modulating control — smooth burner power adjustment for maximum gas savings and comfortable temperature. Two-stage or modulating operation — fast and safe ignition, precise maintenance of set parameters. High safety — complies with European standards EN 161 and EN 88, equipped with leak protection and emergency shutdown systems. Easy installation — direct original replacement for Vaillant (part numbers 0020053968, 0020039187, etc.). Reliability — designed for long-term operation in real conditions of Russian gas. Main characteristics: Model: VK8515MR4571U Type: combined electromagnetic gas valve with pressure regulator Supply voltage: 230V AC / 24V AC Operating gas pressure: up to 30 mbar Application: wall-mounted boilers Vaillant and Protherm Functions: gas supply, flow regulation, modulation, ignition and burner operation safety. Honeywell VK8515MR4571U — ideal