This Type 21 mechanical seal is built to withstand the rigors of heavy-duty pumping environments

the VAL20658 ensures proper refrigerant flow management and dependable sealing performance in air conditioning and heat pump applications

providing the necessary static pressure for both low and high-fire heating cycles

7" for A belts and 5

Resideo Q354A1000/B Flame Sensor 30067439-890 This Type 21 mechanical sealThe Resideo Q354A1000 B Flame Sensor is a precision engineered flame rectification sensor designed for rigorous HVAC environments. Featuring a 2. 92 inch Kanthal rod, this component is essential for detecting the presence of a main burner flame in heating systems. It provides a vital signal to the direct spark ignition (DSI) or hot surface ignition control board, ensuring that gas flow is only permitted when a stable flame is established. This sensor