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The snap-acting mechanism provides a definitive "off" position to full gas flow
Engineering features include 24V AC operation
Replacing the manifold ensures that port sizes remain precise and that no debris clogs the burner orifices
removing the need for ongoing maintenance cycles and protecting the internal ball bearings from premature wear
Watts 0121415 Valve 326058-756 The snap-acting mechanism provides aThe Watts 0121415 (Model 40XL Z2 150) is a heavy duty, automatic reseating temperature and pressure relief valve engineered for critical protection in commercial water heating systems. Designed for hot water supply tanks and large scale water heaters, this 3 4" NPT valve features a high grade bronze body and a 5 inch thermostat extension. It is factory set to trip at 150 PSI and 210F, ensuring system integrity by discharging overheated water or excess
