CIP systems are primarily composed of core components such as cleaning solution storage tanks (e.g., acid, caustic, hot water, fresh water, and recovery tanks), circulation pumps (e.g., supply, return, and booster pumps), heat exchangers (e.g., plate-type), sensors (e.g., temperature, conductivity, pressure, pH, and level sensors), pneumatic control valves, metering pumps (e.g., for acid and caustic), control units (e.g., PLC/SCADA, touchscreen HMI), distributors, and spray balls.

Based on structural design, CIP systems can be categorized into integrated types (where acid, caustic, and fresh water tanks are combined into a single unit) and modular/split types (where tanks are independent, often including concentrated acid/caustic tanks and heaters).
Based on the control method, they are classified as manual, semi-automatic, or fully automatic; fully automatic systems can perform automatic detection, solution dosing, discharge, parameter adjustment, and data recording.
The system's processing capacity varies widely-ranging from 20L to 5,000L or even larger-depending on the specific configuration.
Materials in contact with the product are typically SUS304 or 316L stainless steel, with internal surfaces polished to meet specific roughness requirements.