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Leakage test: Pressure 0.04MPa
Other optional extras include: hot dipped galvanized, stainless steel construction, and customing heights
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DF-403-20
The HEE DF-403-20 Flush Watertight Quick Acting Escape Hatch is a specialized marine safety component designed for shipyards, ship owners, offshore platform operators, and marine engineering contractors. Engineered for emergency escape scenarios on vessels and offshore facilities, this flush watertight quick acting escape hatch features a space-saving flush-mounted structure, reliable watertight performance, and one-step quick acting opening mechanism, ensuring rapid emergency evacuation even in harsh marine environments. Manufactured with premium steel and stainless steel core components, the hatch has passed a 0.04MPa leakage test, meeting strict maritime safety standards, with optional custom configurations to adapt to diverse vessel and offshore project requirements.
Parameter | Specification |
Model No. | DF-403-20 |
Overall Dimension A | 24 1/8" |
Overall Dimension B | 29 5/8" |
Clear Opening Diameter ΦC | 20" |
Coaming Height D | 6" |
Unit Weight | 300 lbs |
Watertight Test Pressure | 0.04MPa |
Standard Hatch Cover Material | Steel |
Standard Sealing Gasket Material | Neoprene |
Core Locking Components Material | Stainless Steel |
This marine flush watertight escape hatch adopts a fully flush-mounted structure, which does not protrude from the deck or bulkhead surface after installation, saving valuable vessel space, avoiding tripping hazards, and adapting to narrow cabin and deck areas.
With a high-elasticity neoprene sealing gasket and multi-point uniform locking structure, the hatch maintains stable watertight performance under 0.04MPa water pressure, preventing water ingress in emergency flooding scenarios, and complying with international maritime safety regulations.
The quick acting emergency escape hatch for ships features a centralized rotating locking system, enabling full opening or locking in 1 second with a single operation, accessible from both inside and outside, ensuring unobstructed emergency evacuation for crew members.
The main structure is fabricated from high-strength steel, with all core locking and rotating components made of stainless steel, delivering exceptional impact resistance, salt spray corrosion resistance, and long-term durability in harsh marine environments, reducing maintenance frequency and costs.
Optional upgrades include hot dipped galvanized finish, full stainless steel construction, and custom coaming heights, adapting to different vessel types, offshore platforms, and project-specific requirements.
The Flush Watertight Quick Acting Escape Hatch operates through a centralized rotating locking system. The central shaft drives the rotating block assembly and 3 stainless steel dog arms to achieve synchronous multi-point locking and release. When the operating mechanism is rotated, the dog arms engage with the coaming locking seats, applying uniform compression force to the neoprene gasket between the hatch cover and coaming, forming a continuous, gap-free watertight seal to block water penetration. In emergency scenarios, the mechanism can be quickly released from both internal and external sides, with the hinge structure enabling smooth opening of the hatch cover, providing an unobstructed 20" clear opening for emergency escape.
Before installation, confirm that the deck or bulkhead opening size matches the hatch coaming dimensions, and inspect the hatch cover, sealing gasket, and locking mechanism for damage or deformation during transportation.
Weld the coaming to the deck or bulkhead with uniform welding, ensuring the coaming surface is level and free of deformation to avoid uneven compression of the sealing gasket. After welding, remove welding slag and apply anti-corrosion treatment to the weld area.
Inspect the neoprene sealing gasket for aging, cracking, or wear every 3 months, and replace it immediately if damaged. Lubricate the stainless steel rotating and locking components every 6 months, and perform a watertight pressure test annually to ensure emergency performance.
The hatch has passed a strict 0.04MPa watertight leakage test, meeting the watertight performance requirements for marine vessel deck and bulkhead installations.
Yes, the quick acting mechanism supports bidirectional operation from both internal and external sides, ensuring unobstructed emergency escape and external rescue access.
The standard configuration uses steel for the main structure and stainless steel for core components. Optional upgrades include hot dipped galvanized finish, full stainless steel construction, and custom coaming heights.
The HEE DF-403-20 Flush Watertight Quick Acting Escape Hatch is a specialized marine safety component designed for shipyards, ship owners, offshore platform operators, and marine engineering contractors. Engineered for emergency escape scenarios on vessels and offshore facilities, this flush watertight quick acting escape hatch features a space-saving flush-mounted structure, reliable watertight performance, and one-step quick acting opening mechanism, ensuring rapid emergency evacuation even in harsh marine environments. Manufactured with premium steel and stainless steel core components, the hatch has passed a 0.04MPa leakage test, meeting strict maritime safety standards, with optional custom configurations to adapt to diverse vessel and offshore project requirements.
Parameter | Specification |
Model No. | DF-403-20 |
Overall Dimension A | 24 1/8" |
Overall Dimension B | 29 5/8" |
Clear Opening Diameter ΦC | 20" |
Coaming Height D | 6" |
Unit Weight | 300 lbs |
Watertight Test Pressure | 0.04MPa |
Standard Hatch Cover Material | Steel |
Standard Sealing Gasket Material | Neoprene |
Core Locking Components Material | Stainless Steel |
This marine flush watertight escape hatch adopts a fully flush-mounted structure, which does not protrude from the deck or bulkhead surface after installation, saving valuable vessel space, avoiding tripping hazards, and adapting to narrow cabin and deck areas.
With a high-elasticity neoprene sealing gasket and multi-point uniform locking structure, the hatch maintains stable watertight performance under 0.04MPa water pressure, preventing water ingress in emergency flooding scenarios, and complying with international maritime safety regulations.
The quick acting emergency escape hatch for ships features a centralized rotating locking system, enabling full opening or locking in 1 second with a single operation, accessible from both inside and outside, ensuring unobstructed emergency evacuation for crew members.
The main structure is fabricated from high-strength steel, with all core locking and rotating components made of stainless steel, delivering exceptional impact resistance, salt spray corrosion resistance, and long-term durability in harsh marine environments, reducing maintenance frequency and costs.
Optional upgrades include hot dipped galvanized finish, full stainless steel construction, and custom coaming heights, adapting to different vessel types, offshore platforms, and project-specific requirements.
The Flush Watertight Quick Acting Escape Hatch operates through a centralized rotating locking system. The central shaft drives the rotating block assembly and 3 stainless steel dog arms to achieve synchronous multi-point locking and release. When the operating mechanism is rotated, the dog arms engage with the coaming locking seats, applying uniform compression force to the neoprene gasket between the hatch cover and coaming, forming a continuous, gap-free watertight seal to block water penetration. In emergency scenarios, the mechanism can be quickly released from both internal and external sides, with the hinge structure enabling smooth opening of the hatch cover, providing an unobstructed 20" clear opening for emergency escape.
Before installation, confirm that the deck or bulkhead opening size matches the hatch coaming dimensions, and inspect the hatch cover, sealing gasket, and locking mechanism for damage or deformation during transportation.
Weld the coaming to the deck or bulkhead with uniform welding, ensuring the coaming surface is level and free of deformation to avoid uneven compression of the sealing gasket. After welding, remove welding slag and apply anti-corrosion treatment to the weld area.
Inspect the neoprene sealing gasket for aging, cracking, or wear every 3 months, and replace it immediately if damaged. Lubricate the stainless steel rotating and locking components every 6 months, and perform a watertight pressure test annually to ensure emergency performance.
The hatch has passed a strict 0.04MPa watertight leakage test, meeting the watertight performance requirements for marine vessel deck and bulkhead installations.
Yes, the quick acting mechanism supports bidirectional operation from both internal and external sides, ensuring unobstructed emergency escape and external rescue access.
The standard configuration uses steel for the main structure and stainless steel for core components. Optional upgrades include hot dipped galvanized finish, full stainless steel construction, and custom coaming heights.
