Johnson Controls VG1841CN Valve 340155-7026 Built with a single-pole double-throw

Built with a single-pole double-throw (SPDT) switch configuration

and reversing valve

the ignition module is likely failing to send the signal to the gas valve

this model is a standard for professional HVACR technicians who require exact compatibility with Raypak atmospheric and digital heating units

Johnson Controls VG1841CN Valve 340155-7026 Built with a single-pole double-throwThe Johnson Controls VG1841CN Valve is a high performance 1 inch NPT three way ball valve designed for precise flow regulation in HVAC hydronic systems. Featuring a robust forged brass body and plated brass trim, this valve is engineered to handle hot water, chilled water, and 50% glycol solutions with a maximum static pressure rating of 580 psig. The integrated equal percentage flow characteristic ensures linear heat transfer in coil applications,