Heavy-Duty Construction: Includes integrated conduit protection for long-term reliability in commercial HVACR applications

Replacing it with a fresh 20J90 spark ignitor restores the high-energy arc required for gas ignition

providing the durability needed for demanding multi-section commercial and residential boiler installations

For technicians servicing high-capacity unit heaters

Common Service Questions What is the BTU rating for the Robertshaw 710-508

Johnson Controls V47AA-2 Valve 30067439-890 Heavy-Duty Construction: Includes integrated conduitThe Johnson Controls V47AA 2 Valve is a 3 8" NPT temperature actuated water regulating valve engineered for direct acting flow control in demanding hydronic and cooling applications. Built with a rugged cast brass body, this valve is designed to open specifically on a temperature increase at the bulb. It features a broad heating point range of 160 to 230 degrees F, making it a reliable solution for maintaining precise thermal setpoints. The assembly