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DF-464-5+144
DF-464-5/144 BUILT-UP HATCH
The DF-464-5/144 BUILT-UP HATCH is a heavy-duty deck fitting tailored for applications requiring secure access to vessel compartments, storage areas, or under-deck spaces. Its robust construction prioritizes leak resistance, load-bearing capacity, and adaptability to harsh marine environments (e.g., saltwater, extreme temperatures, and high humidity). Unlike standard hatches, this model features a modular built-up design that simplifies installation and maintenance, while optional upgrades (such as hot-dipped galvanization or stainless steel materials) extend its service life in corrosive conditions.
HEE’s commitment to quality is reflected in every component of the DF-464-5/144: from the high-strength steel cover to the bronze tumble bolts, each part is selected to meet industrial-grade standards. Additionally, the hatch undergoes rigorous leakage testing to ensure compliance with safety requirements, making it suitable for both commercial shipping and offshore operations.
The DF-464-5/144 BUILT-UP HATCH follows imperial units (inches/pounds) for global compatibility, with the following critical specifications:
Model Number | Dimension A | Dimension B | Dimension C | Diameter (ΦD) | Weight (WT.) |
DF-464-5/144 | 24 1/4'' | 18 1/4'' | 5'' | 7 1/2'' | 134 lbs |
Every DF-464-5/144 hatch is composed of 9 essential parts, each chosen for durability and functional performance:
Part Name & Specification | Quantity | Material |
Cover | 1 | Steel |
Coaming | 1 | Steel |
Gasket | 1 | Neoprene (weather-resistant) |
Dog Handle | 6 | Cast Iron |
Tumble Bolt | 6 | Bronze (corrosion-resistant) |
Small Cover | 1 | Steel |
Small Coaming | 1 | Steel |
Small Gasket | 1 | Neoprene |
Arm | 1 | Cast Steel |
Superior Leakage Protection: Undergoes strict leakage testing at 0.04MPa pressure, ensuring no water, dust, or debris enters compartments—critical for protecting cargo, electrical systems, or machinery.
Heavy-Duty Materials: Primary components (cover, coaming) use high-grade steel for impact resistance, while bronze tumble bolts and neoprene gaskets prevent rust and degradation in marine environments.
User-Friendly Operation: Equipped with 6 cast iron dog handles that enable quick, secure fastening; the built-in arm simplifies opening/closing, even for single operators.
Modular Design: The small cover/coaming sub-assembly provides secondary access to small openings, eliminating the need for separate fittings and reducing installation time.
Customizable Options: Supports upgrades like hot-dipped galvanized finishes (for enhanced corrosion resistance), stainless steel construction (for food-grade or high-purity applications), and custom heights to match specific vessel or facility requirements.
The versatility of the DF-464-5/144 BUILT-UP HATCH makes it ideal for multiple industries and scenarios:
Marine Vessels: Installed on cargo ships, tankers, ferries, and fishing boats to seal storage compartments, engine rooms, or ballast tanks.
Dock & Port Facilities: Used in dockside storage units, maintenance sheds, or loading platforms to protect equipment from rain, salt spray, and dust.
Logistics & Warehousing: Integrated into shipping containers, warehouse floors, or transport vehicles to provide secure access to stored goods while maintaining weathertightness.
Offshore Structures: Adaptable for offshore oil rigs, wind farms, or floating platforms, where resistance to harsh ocean conditions is essential.
Yes. The hatch’s steel components are treated with anti-corrosion coatings (standard), and optional hot-dipped galvanization or stainless steel upgrades further enhance resistance to saltwater damage—making it ideal for coastal or offshore use.
Absolutely. HEE offers custom height options for the DF-464-5/144 to match specific vessel or facility requirements. Contact our sales team via email (hcee@cshcee.com) or phone (+86-512-5266-2139) to discuss customization details.
The DF-464-5/144 is tested at 0.04MPa pressure—a standard that exceeds most industrial requirements for weathertight deck fittings. This ensures no leakage even in heavy rain or splashing conditions.
Routine maintenance includes: (1) Inspecting neoprene gaskets for cracks and replacing them annually; (2) Lubricating bronze tumble bolts with marine-grade lubricant to prevent seizing; (3) Cleaning steel components regularly to remove salt or dust buildup.
Yes. HEE offers just-in-time delivery to destinations worldwide, with support for international shipping standards (e.g., ISO, CCS, ABS). Contact our team to confirm lead times and shipping options for your location.
DF-464-5/144 BUILT-UP HATCH
The DF-464-5/144 BUILT-UP HATCH is a heavy-duty deck fitting tailored for applications requiring secure access to vessel compartments, storage areas, or under-deck spaces. Its robust construction prioritizes leak resistance, load-bearing capacity, and adaptability to harsh marine environments (e.g., saltwater, extreme temperatures, and high humidity). Unlike standard hatches, this model features a modular built-up design that simplifies installation and maintenance, while optional upgrades (such as hot-dipped galvanization or stainless steel materials) extend its service life in corrosive conditions.
HEE’s commitment to quality is reflected in every component of the DF-464-5/144: from the high-strength steel cover to the bronze tumble bolts, each part is selected to meet industrial-grade standards. Additionally, the hatch undergoes rigorous leakage testing to ensure compliance with safety requirements, making it suitable for both commercial shipping and offshore operations.
The DF-464-5/144 BUILT-UP HATCH follows imperial units (inches/pounds) for global compatibility, with the following critical specifications:
Model Number | Dimension A | Dimension B | Dimension C | Diameter (ΦD) | Weight (WT.) |
DF-464-5/144 | 24 1/4'' | 18 1/4'' | 5'' | 7 1/2'' | 134 lbs |
Every DF-464-5/144 hatch is composed of 9 essential parts, each chosen for durability and functional performance:
Part Name & Specification | Quantity | Material |
Cover | 1 | Steel |
Coaming | 1 | Steel |
Gasket | 1 | Neoprene (weather-resistant) |
Dog Handle | 6 | Cast Iron |
Tumble Bolt | 6 | Bronze (corrosion-resistant) |
Small Cover | 1 | Steel |
Small Coaming | 1 | Steel |
Small Gasket | 1 | Neoprene |
Arm | 1 | Cast Steel |
Superior Leakage Protection: Undergoes strict leakage testing at 0.04MPa pressure, ensuring no water, dust, or debris enters compartments—critical for protecting cargo, electrical systems, or machinery.
Heavy-Duty Materials: Primary components (cover, coaming) use high-grade steel for impact resistance, while bronze tumble bolts and neoprene gaskets prevent rust and degradation in marine environments.
User-Friendly Operation: Equipped with 6 cast iron dog handles that enable quick, secure fastening; the built-in arm simplifies opening/closing, even for single operators.
Modular Design: The small cover/coaming sub-assembly provides secondary access to small openings, eliminating the need for separate fittings and reducing installation time.
Customizable Options: Supports upgrades like hot-dipped galvanized finishes (for enhanced corrosion resistance), stainless steel construction (for food-grade or high-purity applications), and custom heights to match specific vessel or facility requirements.
The versatility of the DF-464-5/144 BUILT-UP HATCH makes it ideal for multiple industries and scenarios:
Marine Vessels: Installed on cargo ships, tankers, ferries, and fishing boats to seal storage compartments, engine rooms, or ballast tanks.
Dock & Port Facilities: Used in dockside storage units, maintenance sheds, or loading platforms to protect equipment from rain, salt spray, and dust.
Logistics & Warehousing: Integrated into shipping containers, warehouse floors, or transport vehicles to provide secure access to stored goods while maintaining weathertightness.
Offshore Structures: Adaptable for offshore oil rigs, wind farms, or floating platforms, where resistance to harsh ocean conditions is essential.
Yes. The hatch’s steel components are treated with anti-corrosion coatings (standard), and optional hot-dipped galvanization or stainless steel upgrades further enhance resistance to saltwater damage—making it ideal for coastal or offshore use.
Absolutely. HEE offers custom height options for the DF-464-5/144 to match specific vessel or facility requirements. Contact our sales team via email (hcee@cshcee.com) or phone (+86-512-5266-2139) to discuss customization details.
The DF-464-5/144 is tested at 0.04MPa pressure—a standard that exceeds most industrial requirements for weathertight deck fittings. This ensures no leakage even in heavy rain or splashing conditions.
Routine maintenance includes: (1) Inspecting neoprene gaskets for cracks and replacing them annually; (2) Lubricating bronze tumble bolts with marine-grade lubricant to prevent seizing; (3) Cleaning steel components regularly to remove salt or dust buildup.
Yes. HEE offers just-in-time delivery to destinations worldwide, with support for international shipping standards (e.g., ISO, CCS, ABS). Contact our team to confirm lead times and shipping options for your location.
