The blowout-proof stem design and high close-off pressure ratings minimize leakage and bypass

the 049481 cartridge typically includes the required O-ring for the BTAS-4 shell

Always verify chemical compatibility with the bellows material for specialized oil-free or ammonia applications

preventing soot accumulation and heat exchanger stress

Constructed with a corrosion-resistant steel housing and featuring a statically balanced blower with forward-curved blades

Advanced Distributor Products 76739100 Fan Blade 324846-701 The blowout-proof stem design andThe Advanced Distributor Products 76739100 Fan Blade is a precision engineered OEM replacement part designed to restore peak performance and air distribution in ADP unit heaters and HVAC systems. Featuring a 10 inch diameter and a versatile 4 blade configuration, this component is optimized for consistent airflow in both commercial and industrial applications. The 5 16 inch bore ensures a secure, slip free fit onto standard motor shafts, facilitating