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DF-505
DF-505 FLUSH MULTI-SCREW OVAL HATCH
MODEL NO. | A | B | C | D | WT.(lbs) |
DF-505 | 30 1/8" | 22 1/8" | 23" | 15" | 160 |
NO. | Name & Specifications | Qty | Material |
1 | COVER | 1 | STEEL |
2 | RING | 1 | STEEL |
3 | GASKET | 1 | BUNA-N |
4 | FLAT HEAD SOCKET SCREW | 26 | STAINLESS |
Leakage test: Pressure 0.04MPa
Other optional extras include: hot dipped galvanized, stainless steel construction, and customing heights
The DF-505 Flush Multi-Screw Oval Hatch combines sleek aesthetics with functional performance, addressing the growing demand for fuel-efficient, low-profile marine hardware . Designed to sit nearly flush with the deck surface, this oval hatch minimizes aerodynamic drag and deck obstruction while providing secure access to below-deck compartments. As vessel designers increasingly focus on both performance and appearance, this hatch offers an ideal solution for modern yachts, passenger vessels, and high-performance boats where visual appeal and operational efficiency are equally important.
With a 10mm elevation above the deck surface, the hatch creates minimal wind resistance and trip hazards compared to traditional raised hatches . This ultra-low profile contributes to improved fuel efficiency by reducing aerodynamic drag, particularly beneficial for high-speed vessels. The smooth transition between hatch and deck enhances the vessel's aesthetic appeal.
Utilizing multiple strategically placed screws rather than bolts, the hatch allows for finer adjustment of sealing pressure across the oval shape. This screw configuration accommodates the natural curvature of the oval design, ensuring uniform gasket compression from end to end. The countersunk screws sit flush with the cover surface, eliminating snags and reducing wind resistance.
All external surfaces feature UV-stabilized finishes that resist fading and degradation from prolonged sun exposure . The gasket material incorporates UV inhibitors to maintain elasticity and sealing performance in tropical climates and extended sunlight exposure. Metal components receive specialized coating to prevent discoloration and corrosion.
Perfect for luxury yachts and passenger ferries where aesthetics and safety are paramount, this flush hatch provides discreet access to storage compartments, electrical panels, and below-deck living spaces . Its aerodynamic design makes it suitable for high-performance boats and racing vessels where speed and fuel efficiency are critical. The low profile works exceptionally well in passenger areas, walkways, and lounging decks where an unobstructed surface is desirable. It is also commonly specified in modern naval vessels requiring equipment access without compromising stealth capabilities.
The multi-screw configuration allows more precise pressure adjustment across the oval shape, better accommodating the geometric challenges of sealing curved surfaces. This design also eliminates protruding bolt heads, contributing to the hatch's flush, low-profile appearance.
Yes, the design matches standard cutouts for many oval hatch installations, making it a practical retrofit option for vessel upgrades . This compatibility allows for aesthetic and performance improvements without major deck modifications.
The flush surface eliminates trip hazards in high-traffic passenger zones, while the smooth edges prevent clothing snags. The secure fastening system ensures safe operation even in rough seas with passengers nearby.
The oval design provides superior access compared to circular hatches of similar area, better accommodating tools, equipment, and personnel movement through the opening. The elongated shape works particularly well with the natural movement patterns of those accessing below-deck areas.
Regular cleaning with mild detergents prevents debris buildup around the edges that could affect the flush profile. The screws should be checked periodically for proper torque, and the gasket inspected annually for signs of compression set or degradation.
DF-505 FLUSH MULTI-SCREW OVAL HATCH
MODEL NO. | A | B | C | D | WT.(lbs) |
DF-505 | 30 1/8" | 22 1/8" | 23" | 15" | 160 |
NO. | Name & Specifications | Qty | Material |
1 | COVER | 1 | STEEL |
2 | RING | 1 | STEEL |
3 | GASKET | 1 | BUNA-N |
4 | FLAT HEAD SOCKET SCREW | 26 | STAINLESS |
Leakage test: Pressure 0.04MPa
Other optional extras include: hot dipped galvanized, stainless steel construction, and customing heights
The DF-505 Flush Multi-Screw Oval Hatch combines sleek aesthetics with functional performance, addressing the growing demand for fuel-efficient, low-profile marine hardware . Designed to sit nearly flush with the deck surface, this oval hatch minimizes aerodynamic drag and deck obstruction while providing secure access to below-deck compartments. As vessel designers increasingly focus on both performance and appearance, this hatch offers an ideal solution for modern yachts, passenger vessels, and high-performance boats where visual appeal and operational efficiency are equally important.
With a 10mm elevation above the deck surface, the hatch creates minimal wind resistance and trip hazards compared to traditional raised hatches . This ultra-low profile contributes to improved fuel efficiency by reducing aerodynamic drag, particularly beneficial for high-speed vessels. The smooth transition between hatch and deck enhances the vessel's aesthetic appeal.
Utilizing multiple strategically placed screws rather than bolts, the hatch allows for finer adjustment of sealing pressure across the oval shape. This screw configuration accommodates the natural curvature of the oval design, ensuring uniform gasket compression from end to end. The countersunk screws sit flush with the cover surface, eliminating snags and reducing wind resistance.
All external surfaces feature UV-stabilized finishes that resist fading and degradation from prolonged sun exposure . The gasket material incorporates UV inhibitors to maintain elasticity and sealing performance in tropical climates and extended sunlight exposure. Metal components receive specialized coating to prevent discoloration and corrosion.
Perfect for luxury yachts and passenger ferries where aesthetics and safety are paramount, this flush hatch provides discreet access to storage compartments, electrical panels, and below-deck living spaces . Its aerodynamic design makes it suitable for high-performance boats and racing vessels where speed and fuel efficiency are critical. The low profile works exceptionally well in passenger areas, walkways, and lounging decks where an unobstructed surface is desirable. It is also commonly specified in modern naval vessels requiring equipment access without compromising stealth capabilities.
The multi-screw configuration allows more precise pressure adjustment across the oval shape, better accommodating the geometric challenges of sealing curved surfaces. This design also eliminates protruding bolt heads, contributing to the hatch's flush, low-profile appearance.
Yes, the design matches standard cutouts for many oval hatch installations, making it a practical retrofit option for vessel upgrades . This compatibility allows for aesthetic and performance improvements without major deck modifications.
The flush surface eliminates trip hazards in high-traffic passenger zones, while the smooth edges prevent clothing snags. The secure fastening system ensures safe operation even in rough seas with passengers nearby.
The oval design provides superior access compared to circular hatches of similar area, better accommodating tools, equipment, and personnel movement through the opening. The elongated shape works particularly well with the natural movement patterns of those accessing below-deck areas.
Regular cleaning with mild detergents prevents debris buildup around the edges that could affect the flush profile. The screws should be checked periodically for proper torque, and the gasket inspected annually for signs of compression set or degradation.
The DF-274-5 2 DOG RAISED WATERTIGHT HATCH is a premium marine deck fitting engineered by HEE (Changshu HaiChuan Engineering & Equipment Co., Ltd.), a leading China-based manufacturer specializing in marine and offshore equipment. Designed to address the critical need for reliable water resistance in harsh marine environments, this hatch serves as a protective barrier for deck openings, preventing water ingress, dust accumulation, and corrosion that could damage internal components of vessels, offshore platforms, or port infrastructure.