The Parker-Sporlan 040193-01 1/4 Inch ODF x 3/8 Inch ODF Pressure Valve is a precision refrigeration control component designed to regulate refrigerant pressure in HVAC systems. It works by maintaining the required pressure within the refrigerant circuit, ensuring stable flow and protecting critical system components from pressure fluctuations. Commonly used in air conditioners, heat ... https://www.partshnc.com/040193-01-parker-sporlan-as-14-odf-x-38-odf-press-vlv