this ASCO 8214 Series valve is the industry standard for low-pressure gas manifolds

providing reliable emergency safety relief for commercial and residential boilers

This 200-degree Fahrenheit thermal cut-off is a direct replacement for gravity-vented and counterflow systems

It serves as a direct replacement in systems requiring a 2-wire connection to the heater control circuit

ensuring superior chemical resistance and reliable sealing across a broad temperature range

Taco 433-5 Air Scoop 319825-402 this ASCO 8214 Series valveThe Taco 433 5 Air Scoop is a 1. 5 inch cast iron air separator designed to maintain a noiseless, air free hydronic heating or cooling system. As the direct replacement for the legacy Taco 433, this specific model features an engineered baffle that intentionally disrupts water velocity. By slowing the flow, it forces entrained air out of the solution, allowing bubbles to rise into the top collection chamber for efficient venting. This process is