1. Test one-way valve: air passage pressure, low-pressure air tightness, high-pressure air tightness; 2. Only requires compressed air from an air compressor, connect to AC220V power supply, and the product can be tested; 3. Equipped with high-precision pressure sensors, precise pressure regulating valves, capable of accurately measuring the air pressure during conduction and the reverse air tightness, high-pressure air tightness, for customers
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