this bronze-body valve is factory set at 60 PSI to prevent over-pressurization in high-output boilers

leak-free design with no gaskets

High-Temperature Durability: Engineered to withstand thermal stress near the evaporator coil without warping or cracking

This direct replacement HVAC part adheres to exact factory tolerances for housing dimensions and mounting plate alignment

Durable Construction: Built to withstand constant thermal cycling in high-demand HVAC environments

Carrier KR12HY160 Pulley 320819-301 this bronze-body valve is factoryThe Carrier KR12HY160 Pulley is a high performance 2VP56 variable pitch sheave designed for precise HVAC blower speed adjustment and reliable power transmission. Engineered from durable cast iron, this double groove variable speed pulley supports a variety of belt sections including 3L, 4L, 5L, A, and B, making it a versatile component for industrial fan drives. With an outside diameter (OD) of 5. 35 inches and a finished bore, it provides the