This hard shutoff thermostatic expansion valve is a balanced port

Versatile Application: Supports both HSI and DSI ignition systems

The rod is engineered for high tensile strength and corrosion resistance

it is best practice to source a new silicone or fiber gasket to ensure a watertight seal upon reassembly

installing a high-quality refrigerant filter drier is essential for preventing corrosion and sludge

ASCO K3A551V Valve R-448A This hard shutoff thermostatic expansionThe ASCO K3A551V Valve is a high performance 2 way normally closed gas shutoff solenoid valve engineered for precision control in commercial and industrial HVAC systems. Operating on a 24V AC power supply, this direct acting valve is specifically designed for the positive shutoff of natural gas, propane, and mixed gases. With a robust 3 4 inch NPT connection and a durable die cast aluminum body, it manages a maximum operating pressure of 3 PSI (3#