What gauge and material are used for the internal spray manifolds of an auto-wash unit?

Commercial kitchen auto-wash ESP fume purifiers require durable, corrosion-resistant internal spray manifolds to withstand harsh kitchen environments, including greasy humidity, cyclic hot water flushing, and regular degreasing chemical spraying. Professional auto-wash units adopt standardized industrial materials and pipe gauges to ensure long-term stable cleaning performance.

The internal spray manifolds are fully constructed of SUS304 stainless steel, the most reliable material for commercial kitchen ventilation equipment. Unlike ordinary PVC, galvanized iron or 201 stainless steel, SUS304 features excellent resistance to oil corrosion, alkaline surfactant erosion and high-temperature water oxidation. In long-term kitchen operation, it avoids rusting, scaling, pipe clogging and water leakage, common failures that disrupt automatic cleaning cycles and degrade fume purification efficiency.

For pipe specification, the manifolds adopt Schedule 40 thick-wall stainless steel tubing with 1.2mm wall gauge, a heavy-duty standard customized for commercial ESP auto-wash systems. This industrial gauge is far thicker than ordinary thin-walled decorative pipes. It stably withstands the system’s 3–5 bar circulating water pressure, preventing pipe expansion, deformation or bursting during frequent automatic washing operations.

Equipped with precision drilled spray holes, the thick-wall SUS304 manifold ensures uniform water and detergent coverage over ESP collector plates and mesh filters. It thoroughly flushes polymerized kitchen grease without dead angles, maintaining consistent cleaning effects and stable equipment wind resistance.

Tailored for 24/7 commercial kitchen operation, this material and gauge combination effectively reduces manifold aging and replacement frequency. It minimizes equipment downtime and manual maintenance workload, perfectly matching the high-intensity operation needs of restaurants, canteens and catering centers, and guarantees the long-term stable operation of the entire auto-wash fume purification system.

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