Durable Construction: Built to withstand the high-cycle demands of residential furnace environments without premature fatigue

By maintaining precise timing for disconnect

the Watts 0881428 is lead-free and suitable for both steam and high-temp water systems

and preventing soot accumulation or hazardous carbon monoxide buildup

What does SPST mean for this HVAC part

Schneider Electric (Erie) AH13B020 Actuator Els PW 17895 Durable Construction: Built to withstandThe Schneider Electric (Erie) AH13B020 Actuator is a field proven 120V PopTop zone valve actuator engineered for precise two position control in commercial and residential hydronic systems. This spring return unit is designed to return the valve to its normally closed position upon loss of power, ensuring reliable fail safe operation. As a high close off (HCO) model, the AH13B020 delivers approximately 25% higher pressure differential capacity