The liquid internal pressure tester is a precision testing system designed specifically for evaluating the compressive strength, sealing performance, and fatigue life of sealed products such as pipelines, containers, valves, and bottles. By injecting liquid (water or oil) into the interior of the tested component and precisely controlling the pressure rise and fall, real-time pressure time curves are collected to quickly determine whether there is a risk of leakage, deformation, or rupture. Typical applications: Explosion and pressure testing of PET bottles, aluminum cans, and sterile packaging materials for food and beverage. Petrochemical industry: Fatigue and sealing verification of high-pressure hoses, valves, and joints. Automotive aviation: Pulse testing of brake pipelines, fuel systems, and hydraulic components.