Look for a bulging top

The Maxitrol 325-7A is rated for a 10 PSI maximum inlet pressure

breaking the circuit on a temperature drop to prevent coil freeze-up or maintain specific thermal boundaries

What is the maximum pressure this valve body can handle

The York S1-025-32798-036 is a professional-grade 5-ton R-22 thermostatic expansion valve designed for precision refrigerant metering in residential and light commercial evaporator coils

Robertshaw 700-422 Gas Valve 30067439-890 Look for a bulging topThe Robertshaw 700 422 Gas Valve is a high capacity 24V diaphragm gas valve designed for heavy duty commercial and residential heating applications. This combination gas valve features a 1 2" NPT inlet and a 3 4" NPT outlet, delivering a flow capacity of up to 240,000 BTU. Factory set at 3. 5" WC natural gas pressure regulation, it provides precise manifold pressure control for consistent burner performance. As a 7000BGVER model, it incorporates a