Ensure you use full-face gaskets compatible with ANSI Class 125 flat-faced flanges and follow a cross-pattern torquing sequence to prevent stress fractures in the cast iron body

and State water heaters

This 4-inch dial gauge features a 0-100 PSI range and a standard 1/4" NPT lower mount connection

a specific low-voltage alternative like the AL-190 should be sourced

Amana-Goodman 0131F00645S Pressure Switch 322838-754 Ensure you use full-face gasketsThe Amana Goodman 0131F00645S Pressure Switch is a critical safety component designed for high efficiency HVAC systems. This OEM replacement pressure switch serves as a direct upgrade for the discontinued 0130F00645 model, ensuring seamless compatibility with specific Amana and Goodman gas furnaces. Engineered to monitor the negative pressure created by the inducer motor, this dual stage pressure switch prevents the heating cycle from proceeding if