The York 026-37548-000 Sight Glass is a mission-critical OEM replacement part designed for precision refrigerant monitoring in industrial and commercial HVACR systems

this OEM-spec part maintains the operational integrity of residential and light commercial furnaces

and 121 series

optimizing flue gas velocity and pressure switch performance

The dual 1/4-inch quick-connect terminals are constructed to withstand increased thermal loads

Conbraco 18C-511-3-150 Valve Els PW 17895 The York 026-37548-000 Sight GlassThe Conbraco 18C 511 3 150 is a high capacity temperature and pressure relief valve engineered for heavy duty commercial and industrial water heaters. This T&P relief valve features a 3 4" MNPT inlet and a 3 4" FNPT outlet, facilitating a straight line installation for high demand hydronic systems. With a factory set 150 PSI relief pressure and a 210F temperature setting, it provides critical over pressure and over temperature protection. The unit is