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DF-686-5
HEE
| NO. | Name & Specifications | Qty | Material |
| 1 | COVER | 1 | STEEL |
| 2 | COAMING | 1 | STEEL |
| 3 | GASKET | 1 | NEOPRENE |
| 4 | DOG HANDLE | 6 | IRON |
| 5 | TUMBLE BOLT | 6 | BRONZE |
| 6 | HINGE PIN ASSEMBLY | 6 | STAINLESS |
The DF-686-5 6 Dog Raised Watertight Hatch represents a specialized solution in marine access technology, engineered for applications demanding reliable waterproof performance. As maritime safety regulations become increasingly stringent, this hatch meets the industry's growing need for durable, corrosion-resistant access solutions . The raised design provides enhanced sealing pressure compared to flush models, while the six dog latching system ensures uniform compression around the entire perimeter. This combination makes it a preferred choice for vessels operating in challenging ocean environments where water intrusion poses significant risks.
Featuring six individually adjustable quick-action dogs, the hatch delivers consistent sealing pressure across the gasket surface . Each dog can be fine-tuned to accommodate deck variations, ensuring a watertight seal even as the vessel flexes under load. The latching system operates with minimal effort while maintaining secure closure in heavy seas.
Constructed with marine-grade alloys and stainless steel components, the hatch withstands saltwater exposure and harsh weather conditions. All structural threads incorporate stainless steel inserts (heli-coils) to enhance strength at critical fastening points, preventing thread degradation over time . The frame and cover undergo specialized treatment to resist UV damage and electrochemical corrosion.
The hatch supports 180° hinge rotation, allowing full unobstructed access without disassembly . This feature is particularly valuable in confined spaces where maneuvering room is limited. The reversible base design enables easy adjustment of the opening direction during installation, adapting to specific deck layouts and operational requirements.
Ideal for offshore platforms and tanker vessels, this watertight hatch provides secure access to below-deck compartments, fuel storage areas, and mechanical rooms . Its robust construction makes it suitable for military vessels requiring equipment access without compromising hull integrity. The raised design works well in applications with moderate deck traffic where maintaining a watertight seal takes priority over a completely flush surface. It is commonly specified in rescue craft and patrol boats where reliable performance can impact mission success.
The six-dog configuration distributes pressure more evenly across the sealing surface than hatches with fewer latches, reducing the risk of leaks in high-pressure environments. This design is particularly effective on larger hatch openings where uniform compression is critical.
Yes, the latching mechanism is designed for bidirectional operation, allowing access from either side of the deck . This feature enhances safety by providing emergency egress options and operational flexibility during normal vessel operations.
The DF-686-5 complies with international maritime regulations including IMO safety standards and US Coast Guard requirements for watertight access fittings . It is suitable for installation in SOLAS-regulated vessels requiring certified safety equipment.
Under normal operating conditions, the neoprene gasket should be inspected quarterly and replaced every 12–18 months depending on usage frequency. Extreme environments with heavy vibration or chemical exposure may require more frequent replacement.
When properly installed, the hatch assembly supports standard deck loads from foot traffic and equipment placement up to 300 lbs. The reinforced frame design contributes to overall deck strength rather than creating a weak point.
| NO. | Name & Specifications | Qty | Material |
| 1 | COVER | 1 | STEEL |
| 2 | COAMING | 1 | STEEL |
| 3 | GASKET | 1 | NEOPRENE |
| 4 | DOG HANDLE | 6 | IRON |
| 5 | TUMBLE BOLT | 6 | BRONZE |
| 6 | HINGE PIN ASSEMBLY | 6 | STAINLESS |
The DF-686-5 6 Dog Raised Watertight Hatch represents a specialized solution in marine access technology, engineered for applications demanding reliable waterproof performance. As maritime safety regulations become increasingly stringent, this hatch meets the industry's growing need for durable, corrosion-resistant access solutions . The raised design provides enhanced sealing pressure compared to flush models, while the six dog latching system ensures uniform compression around the entire perimeter. This combination makes it a preferred choice for vessels operating in challenging ocean environments where water intrusion poses significant risks.
Featuring six individually adjustable quick-action dogs, the hatch delivers consistent sealing pressure across the gasket surface . Each dog can be fine-tuned to accommodate deck variations, ensuring a watertight seal even as the vessel flexes under load. The latching system operates with minimal effort while maintaining secure closure in heavy seas.
Constructed with marine-grade alloys and stainless steel components, the hatch withstands saltwater exposure and harsh weather conditions. All structural threads incorporate stainless steel inserts (heli-coils) to enhance strength at critical fastening points, preventing thread degradation over time . The frame and cover undergo specialized treatment to resist UV damage and electrochemical corrosion.
The hatch supports 180° hinge rotation, allowing full unobstructed access without disassembly . This feature is particularly valuable in confined spaces where maneuvering room is limited. The reversible base design enables easy adjustment of the opening direction during installation, adapting to specific deck layouts and operational requirements.
Ideal for offshore platforms and tanker vessels, this watertight hatch provides secure access to below-deck compartments, fuel storage areas, and mechanical rooms . Its robust construction makes it suitable for military vessels requiring equipment access without compromising hull integrity. The raised design works well in applications with moderate deck traffic where maintaining a watertight seal takes priority over a completely flush surface. It is commonly specified in rescue craft and patrol boats where reliable performance can impact mission success.
The six-dog configuration distributes pressure more evenly across the sealing surface than hatches with fewer latches, reducing the risk of leaks in high-pressure environments. This design is particularly effective on larger hatch openings where uniform compression is critical.
Yes, the latching mechanism is designed for bidirectional operation, allowing access from either side of the deck . This feature enhances safety by providing emergency egress options and operational flexibility during normal vessel operations.
The DF-686-5 complies with international maritime regulations including IMO safety standards and US Coast Guard requirements for watertight access fittings . It is suitable for installation in SOLAS-regulated vessels requiring certified safety equipment.
Under normal operating conditions, the neoprene gasket should be inspected quarterly and replaced every 12–18 months depending on usage frequency. Extreme environments with heavy vibration or chemical exposure may require more frequent replacement.
When properly installed, the hatch assembly supports standard deck loads from foot traffic and equipment placement up to 300 lbs. The reinforced frame design contributes to overall deck strength rather than creating a weak point.
