The ZZYVP Direct-Acting Self-Operated Pressure Regulating Valve with Pilot is primarily composed of a control valve, an actuator, and a pilot for setting pressure. Simply put, direct-acting self-operated valves generally lack high control accuracy, and the pilot is designed to enhance this accuracy. This valve requires no external energy source. It utilizes the energy of the controlled medium (gas) itself as the power source. This energy is introduced into the pilot's sensing and actuating mechanism to control the position of the regulating valve's plug. This action alters the flow of medium through the valve, maintaining the downstream pressure (Type B) or upstream pressure (Type K) at a constant value.