Specifically engineered for use with hot water and steam valves

15mm orifice is frequently a core component in official Reznor conversion kits for specific BTU ratings and altitude adjustments

and mechanical dimensions

Always verify the part number against your specific model and serial number to ensure the drive ratio remains within manufacturer specs

Installers should mount the device with the diaphragm in a vertical plane to maintain factory-specified set points

Johnson Controls VG7551ET Valve 323055-751 Specifically engineered for use withValve, Globe, 2 Way Normally Open, 1 2", Union Angle, 1. 8 Cv Equal Percentage Flow Cast Bronze Body with Brass Trim, Standard Threaded Stem and Push Down To Close Action