The Sporlan SORIT-12-0/100 Less Coil 1-1/8 ODF Evaporator Pressure Regulator Valve is a head pressure control valve made of brass, designed to regulate the pressure in an HVAC or refrigeration system. It is compatible with the Sporlan brand and model SORIT-12-0/100, providing precise control over the system's pressure for optimal performance. This valve is an essential component for maintaining the efficient operation of HVAC and refrigeration systems in various industrial and commercial applications.