Bertazzoni Gas Valve Bertazzoni 502263 Replacement GAS VALVE BY PASS 037 for Gas Cooktops and Rangetops. The Bertazzoni 502263 Cooktop Gas Valve By Pass 037 is the correct replacement for the following model numbers> MAST365QBXT PROF365QBXT PROF305CTXV PROF365QXE PROF365CTXV PROF304QBXT PROF304QXE PROF244CTXV Q30400XLP MAST365QXE MAST304QXE MAST304QBXT MAST366QBXT PM363I0X PROF366QBXT Bertazzoni 502263 Cooktop Gas Valve Bypass 037 – the perfect solution for all your gas valve needs. With its high-quality construction and reliable performance, this gas valve bypass is designed to enhance the functionality and safety of your Bertazzoni cooktop. Crafted with precision and durability in mind, our gas valve bypass ensures efficient gas flow control, allowing you to effortlessly adjust the flame intensity according to your cooking preferences. Say goodbye to uneven heat distribution and hello to perfectly cooked meals every time