The 47K19 and 47K1901 are the exact same component with identical specifications

optimized for maximum airflow efficiency and heat dissipation

Maintaining optimal static pressure is critical for safe combustion

Relying on certified HVAC parts like the RTG20006DG is the only way to guarantee that your high-efficiency water heating system operates within its engineered thermal parameters

ensuring the thermocouple or thermopile (depending on your specific valve configuration) sits correctly in the flame path for reliable millivolt production

Armstrong International B6459-1 Gasket Els PW 17895 The 47K19 and 47K1901 areThe Armstrong International B6459 1 Gasket is a critical sealing component engineered specifically for Armstrong 815 series inverted bucket steam traps. Constructed from high integrity materials designed to withstand the thermal stresses of saturated steam environments, this replacement steam trap gasket ensures a leak proof seal between the trap body and cap. In high pressure condensate return systems, maintaining the pressure vessel's integrity is