The integral thermal expansion bypass prevents high-pressure spikes in closed loops

Key Benefits Metal-to-metal seating utilizes stainless steel on brass to maintain a reliable seal in diverse thermal conditions

making it a critical stock item for maintaining peak system uptime

and protect other expensive internal components from electrical stress

Viessmann 7817692 323055-751 The integral thermal expansion bypassWhen you are opening up a Viessmann Vitodens 200 WB2A or Vitocrossal CU3A for annual service or a burner teardown, the Viessmann 7817692 Burner Gasket is a non negotiable replacement item. This OEM Viessmann burner door gasket is engineered specifically for the WB2A 44 and WB2A 60 models, ensuring a precise, gastight seal between the burner assembly and the heat exchanger. In high output condensing systems, maintaining the integrity of the combustion