This steam pressure control device is designed to regulate the pressure of steam in HVAC systems. It features a single-pole, double-throw switch that can handle up to 240 volts of power. The P47EA-1 model is capable of controlling steam pressures ranging from 50 to 240 PSI, making it suitable for a wide range of applications. Its compact size and easy-to-use design make it an ideal choice for HVAC service technicians looking for a reliable and efficient solution to their steam pressure control needs.