A sewage suction truck is a specialized vehicle for collecting and transporting liquid waste, composed of key components: a vacuum pump (the core power unit creating negative pressure for suction), a sealed sewage tank (storing waste with corrosion-resistant materials like steel), a suction hose with a suction gun, a discharge system, and a chassis (usually a heavy-duty truck frame for stability). Auxiliary parts include pressure gauges, safety valves, and cleaning systems to ensure operational safety.

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