also recognized as the H721LC

010-inch tolerance is easily damaged

The Robertshaw 1970-018 Thermocouple is a high-performance 18-inch Uni-Couple engineered for universal pilot burner compatibility in commercial and residential standing pilot systems

Common Questions What is the maximum pressure rating for this glass

Williams P090554 Orifice also recognized as the H721LCThe Williams P090554 Orifice is a critical engineering component designed for precise fuel metering in Williams furnace gas conversion and high altitude applications. For contractors managing HVAC high altitude kits, this brass burner orifice is essential for maintaining correct manifold pressure and combustion stability. Specifically utilized in liquid propane (LPG) systems, the P090554 ensures that units like the Williams Monterey and Forsaire