Atmospheric Tank Manway Cover

This Atmospheric Tank Manway Cover has a nominal pressure of atmospheric, manufactured according to national standards such as HG/T21515. It is a dedicated maintenance access for atmospheric and slight negative pressure storage tanks, strictly prohibited for use in pressurized vessels. It is widely used in multiple industries such as chemical, food, and brewing. The Atmospheric Tank Manway Cover is installed at the tank maintenance access for personnel access for cleaning and maintenance. It is often paired with breathing valves and flame arrestors, with a simple structure and lower cost. Different opening forms can also be selected based on operation frequency to meet basic maintenance needs for different working conditions. Our factory has a monthly production capacity of 1-2 million RMB. Standard product lead times are determined by quantity, on-time delivery is ensured through contracts, and photo and video progress updates can be provided during production.

This Atmospheric Tank Manway Cover comes in structures such as flat cover, swing cover, quick opening, and oval type. The quick opening type allows single-person opening and closing in 30 seconds to 1 minute, and the oval model 450×350 facilitates personnel access. The body can be 304/316L stainless steel or carbon steel. Seals are PTFE, EPDM, etc. Sanitary grade models have mirror polishing of Ra≤0.8μm, with temperature resistance of -20℃~120℃ and no pressure rating marking. The equipment has reliable sealing, preventing minor medium leakage and external contamination, and the quick opening structure significantly improves maintenance efficiency. For model selection, choose material based on medium and structure based on operation frequency. During installation, flange surfaces should be flat with bolts tightened diagonally. During maintenance, regularly inspect seals. The core safety red line is that use in pressurized vessels is strictly prohibited, and pressure must be fully released with dedicated personnel supervision before opening. We support OEM/ODM and can manufacture based on technical drawings or prototypes. MOQ is not limited, and different models can be mixed in one minimum order quantity.

Widely used in atmospheric and slight negative pressure industrial equipment such as chemical atmospheric storage tanks, food storage tanks, brewing fermentation tanks, water treatment purification tanks, oil storage tanks, and buffer tanks. It is a standard device for maintenance, cleaning and personnel access of various atmospheric vessels.

Our quality control for Atmospheric Tank Manway Covers follows the principle of not lowering standards for atmospheric pressure products. Each product undergoes 100% full inspection before packaging, with a quality inspection process before shipment. We accept third-party inspection, with costs borne by the requesting party. Material certificates and quality inspection reports can be attached before shipment. If goods are damaged upon arrival, non-quality issues are the responsibility of the damaging party; if it is a quality issue, the manufacturer replaces it free of charge and is not responsible for logistics costs. We provide a 12-month warranty period, excluding wearing parts.

Export packaging uses pallets and wooden cases. Each product is first individually wrapped for protection, with flange surfaces and sealing surfaces additionally protected to prevent scratches and deformation during transportation, then placed in a wooden case. The entire batch is palletized and secured, with markings such as model, quantity, gross weight, and dimensions labeled outside the cases. We support both EXW and FOB trade terms. EXW means the buyer picks up the packaged products at the factory; FOB means the factory covers transportation to the port and customs clearance costs.

Standard Atmospheric Tank Manway Covers follow the payment process of 30% advance payment + 70% balance payment; custom models use 50% advance payment + 50% balance payment. Bulk orders are eligible for discounts, determined on a per-order basis. We accept payment in US dollars and RMB. For repeat orders, the lead time is determined by the product order. The payment process is standardized and transparent, with each payment corresponding to a formal contract and commercial invoice.

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