The Maxitrol R500S-3/4 is a professional-grade gas appliance pressure regulator engineered for high-performance control in light industrial and commercial heating systems

The Burnham Boiler 8010801 Aquastat is a high-limit immersion controller engineered for precision temperature regulation in hydronic heating systems

Specifically designed to fit York B1HN series units and other compatible PCE4 models

The Johnson Controls P10BC-7 Pressure Control is a rugged

Universal compatibility with 1/4-inch O

Lochinvar & A.O. Smith 100277962 Cover 322056-301 The Maxitrol R500S-3/4 is aThe Lochinvar & A. O. Smith 100277962 Gasket Manifold Cover is a vital OEM component designed to provide a high integrity seal for the manifold cover assembly. This technical manifold cover gasket is the direct performance replacement for the obsolete part number 100060121 (also cross referenced as GKT20172K and GKT20172). Engineered for high temperature environments, this part is specifically validated for use in Lochinvar Crest FBN(L) 751 2001