This SPNO (Single Pole Normally Open) contactor features an isolated coil with an 16-ohm resistance

providing the precise orifices and port alignment required for the Burnham 8 series boilers

Precision Control: Ideal for two-position mixing or diverting applications in commercial and residential hydronic circuits

Always verify your control system's voltage requirements before installation to prevent coil damage

Johnson Controls D-3153-20 Damper Actuator Els PW 17895 This SPNO (Single Pole NormallyFor versatile pneumatic control of ventilation and safety dampers, the Johnson Controls D 3153 20 Damper Actuator provides a rugged, field ready solution. Engineered with a large 15 inch synthetic elastomer diaphragm and a durable die cast aluminum body, this linear actuator is built for high demand environments. It features a 3 inch stroke and a nominal 8 13 psi spring range, ensuring consistent displacement in both proportional and two position