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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.
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DF-274-5
DF-274-5 2 DOG RAISED WATERTIGHT HATCH
Unlike generic hatch solutions, the DF-274-5 integrates robust construction with user-centric design, making it suitable for both commercial and industrial applications. Backed by HEE’s decades of manufacturing expertise, the hatch adheres to international quality standards and undergoes strict performance testing to ensure consistency. Its raised structure enhances compatibility with uneven deck surfaces, while the dual-dog locking mechanism simplifies operation—even in high-stress scenarios. For global clients, HEE offers just-in-time delivery and tailored customization, further solidifying the DF-274-5 2 DOG RAISED WATERTIGHT HATCH as a top choice for marine engineers and project managers.
Precision in dimensions is critical for seamless deck integration, and the DF-274-5 is engineered to meet exacting standards. The table below outlines its core physical parameters:
MODEL NO. | A (Length) | B (Width) | C (Height) | WT. (Weight) |
DF-274-5 | 23' | 15' | 5' | 90 lbs |
Every component of the DF-274-5 2 DOG RAISED WATERTIGHT HATCH is selected for durability and resistance to marine-specific wear. The table below details material specifications, while performance testing validates its watertight claims:
Name & Specifications | Quantity | Material |
Cover (Hatch Top) | 1 | STEEL |
Coaming (Deck Frame) | 1 | STEEL |
Sealing Gasket | 1 | NEOPRENE |
Dog Handle (Locking) | 2 | CAST IRON |
Tumble Bolt (Fastener) | 2 | BRONZE |
To ensure uncompromised watertight performance, the DF-274-5 undergoes mandatory leakage testing at a pressure of 0.04MPa—exceeding industry benchmarks for water resistance in marine deck fittings. This test simulates heavy rain, wave splashes, and high-humidity conditions, guaranteeing no water penetration when the hatch is properly secured.
The DF-274-5 2 DOG RAISED WATERTIGHT HATCH’s primary advantage lies in its exceptional sealing capability. The NEOPRENE gasket—a synthetic rubber renowned for flexibility and chemical resistance—forms a tight seal between the steel cover and coaming. Unlike rigid gaskets, NEOPRENE adapts to minor deck vibrations or thermal expansion, eliminating gaps that cause leaks. The dual CAST IRON dog handles work in tandem with bronze tumble bolts to distribute pressure evenly across the gasket, ensuring consistent sealing even after repeated use. This design makes the hatch ideal for areas exposed to saltwater, heavy rainfall, or high moisture.
Marine environments demand materials that withstand saltwater, oxidation, and impact—and the DF-274-5 delivers on this front. The steel cover and coaming provide structural rigidity to handle heavy loads (e.g., foot traffic, equipment placement) without bending or cracking. Bronze tumble bolts resist rust and galvanic corrosion, a common issue with steel fasteners in saltwater. Meanwhile, the CAST IRON dog handles offer superior wear resistance, ensuring smooth operation for years without deformation. For clients in extreme environments (e.g., offshore oil rigs), HEE offers optional hot-dipped galvanized finishing or stainless steel construction to further enhance corrosion resistance.
The DF-274-5 is designed for ease of use, even in tight spaces or emergency scenarios. The two dog handles feature a non-slip grip, allowing operators to lock/unlock the hatch quickly—no specialized tools required. Unlike multi-bolt hatches that demand sequential tightening, the dual-dog mechanism reduces operation time by 50%, a critical benefit during urgent repairs or cargo loading. Additionally, the hatch’s simple component structure minimizes maintenance: the NEOPRENE gasket is easy to replace, and steel/bronze parts require only occasional cleaning to maintain performance.
HEE recognizes that every marine project has unique requirements, so the DF-274-5 2 DOG RAISED WATERTIGHT HATCH offers tailored solutions. Beyond standard steel construction, clients can opt for stainless steel (316L) for extreme corrosion resistance (e.g., tropical marine environments) or hot-dipped galvanization for cost-effective rust protection. Height customization is also available: the standard 5' coaming can be adjusted to fit deck openings of varying depths, ensuring seamless integration with existing infrastructure.
The DF-274-5 is a staple for cargo ships, ferries, and fishing vessels. It is typically installed on deck openings leading to below-deck cargo holds, engine rooms, or crew quarters—protecting sensitive equipment (e.g., electrical systems, fuel tanks) from water damage during rough seas. Its 90-lb weight balances durability and portability, making it suitable for mid-sized vessels where weight restrictions apply.
Offshore platforms operate in some of the harshest environments, so the DF-274-5 2 DOG RAISED WATERTIGHT HATCH is engineered to withstand salt spray, high winds, and temperature fluctuations. It is used to seal openings to maintenance shafts, storage compartments, and control rooms—preventing corrosion of critical infrastructure (e.g., pipelines, valves). Optional stainless steel construction is highly recommended for these applications, as it extends the hatch’s lifespan by 3–5 years compared to standard steel.
Ports and docks require hatches that can handle heavy foot traffic, equipment movement, and exposure to tidal water. The DF-274-5’s steel cover supports loads up to 500 lbs, making it ideal for installation on dock decks, warehouse loading bays, or maintenance tunnels. Its watertight design also protects underground utilities (e.g., electrical cables, water pipes) from flooding during high tides or heavy rain.
Intermodal containers (e.g., shipping containers, rail cargo units) often require hatches for access to internal storage. The DF-274-5’s raised structure prevents water from pooling on the cover, a common issue with flush hatches that leads to leakage. It is used to seal openings on refrigerated containers (reefers) or hazardous material containers, ensuring cargo (e.g., food, chemicals) remains protected from moisture and contamination during transit.
HEE (Changshu HaiChuan Engineering & Equipment Co., Ltd.) provides end-to-end support for the DF-274-5 2 DOG RAISED WATERTIGHT HATCH. Clients benefit from:
· Pre-sales consultation: HEE’s engineers assist with dimension verification and customization recommendations to ensure the hatch fits specific project needs.
· Global delivery: Just-in-time shipping to over 50 countries, with expedited options for urgent projects.
· After-sales service: Replacement parts (e.g., NEOPRENE gaskets, bronze bolts) are available for fast delivery, minimizing downtime.
DF-274-5 2 DOG RAISED WATERTIGHT HATCH
Unlike generic hatch solutions, the DF-274-5 integrates robust construction with user-centric design, making it suitable for both commercial and industrial applications. Backed by HEE’s decades of manufacturing expertise, the hatch adheres to international quality standards and undergoes strict performance testing to ensure consistency. Its raised structure enhances compatibility with uneven deck surfaces, while the dual-dog locking mechanism simplifies operation—even in high-stress scenarios. For global clients, HEE offers just-in-time delivery and tailored customization, further solidifying the DF-274-5 2 DOG RAISED WATERTIGHT HATCH as a top choice for marine engineers and project managers.
Precision in dimensions is critical for seamless deck integration, and the DF-274-5 is engineered to meet exacting standards. The table below outlines its core physical parameters:
MODEL NO. | A (Length) | B (Width) | C (Height) | WT. (Weight) |
DF-274-5 | 23' | 15' | 5' | 90 lbs |
Every component of the DF-274-5 2 DOG RAISED WATERTIGHT HATCH is selected for durability and resistance to marine-specific wear. The table below details material specifications, while performance testing validates its watertight claims:
Name & Specifications | Quantity | Material |
Cover (Hatch Top) | 1 | STEEL |
Coaming (Deck Frame) | 1 | STEEL |
Sealing Gasket | 1 | NEOPRENE |
Dog Handle (Locking) | 2 | CAST IRON |
Tumble Bolt (Fastener) | 2 | BRONZE |
To ensure uncompromised watertight performance, the DF-274-5 undergoes mandatory leakage testing at a pressure of 0.04MPa—exceeding industry benchmarks for water resistance in marine deck fittings. This test simulates heavy rain, wave splashes, and high-humidity conditions, guaranteeing no water penetration when the hatch is properly secured.
The DF-274-5 2 DOG RAISED WATERTIGHT HATCH’s primary advantage lies in its exceptional sealing capability. The NEOPRENE gasket—a synthetic rubber renowned for flexibility and chemical resistance—forms a tight seal between the steel cover and coaming. Unlike rigid gaskets, NEOPRENE adapts to minor deck vibrations or thermal expansion, eliminating gaps that cause leaks. The dual CAST IRON dog handles work in tandem with bronze tumble bolts to distribute pressure evenly across the gasket, ensuring consistent sealing even after repeated use. This design makes the hatch ideal for areas exposed to saltwater, heavy rainfall, or high moisture.
Marine environments demand materials that withstand saltwater, oxidation, and impact—and the DF-274-5 delivers on this front. The steel cover and coaming provide structural rigidity to handle heavy loads (e.g., foot traffic, equipment placement) without bending or cracking. Bronze tumble bolts resist rust and galvanic corrosion, a common issue with steel fasteners in saltwater. Meanwhile, the CAST IRON dog handles offer superior wear resistance, ensuring smooth operation for years without deformation. For clients in extreme environments (e.g., offshore oil rigs), HEE offers optional hot-dipped galvanized finishing or stainless steel construction to further enhance corrosion resistance.
The DF-274-5 is designed for ease of use, even in tight spaces or emergency scenarios. The two dog handles feature a non-slip grip, allowing operators to lock/unlock the hatch quickly—no specialized tools required. Unlike multi-bolt hatches that demand sequential tightening, the dual-dog mechanism reduces operation time by 50%, a critical benefit during urgent repairs or cargo loading. Additionally, the hatch’s simple component structure minimizes maintenance: the NEOPRENE gasket is easy to replace, and steel/bronze parts require only occasional cleaning to maintain performance.
HEE recognizes that every marine project has unique requirements, so the DF-274-5 2 DOG RAISED WATERTIGHT HATCH offers tailored solutions. Beyond standard steel construction, clients can opt for stainless steel (316L) for extreme corrosion resistance (e.g., tropical marine environments) or hot-dipped galvanization for cost-effective rust protection. Height customization is also available: the standard 5' coaming can be adjusted to fit deck openings of varying depths, ensuring seamless integration with existing infrastructure.
The DF-274-5 is a staple for cargo ships, ferries, and fishing vessels. It is typically installed on deck openings leading to below-deck cargo holds, engine rooms, or crew quarters—protecting sensitive equipment (e.g., electrical systems, fuel tanks) from water damage during rough seas. Its 90-lb weight balances durability and portability, making it suitable for mid-sized vessels where weight restrictions apply.
Offshore platforms operate in some of the harshest environments, so the DF-274-5 2 DOG RAISED WATERTIGHT HATCH is engineered to withstand salt spray, high winds, and temperature fluctuations. It is used to seal openings to maintenance shafts, storage compartments, and control rooms—preventing corrosion of critical infrastructure (e.g., pipelines, valves). Optional stainless steel construction is highly recommended for these applications, as it extends the hatch’s lifespan by 3–5 years compared to standard steel.
Ports and docks require hatches that can handle heavy foot traffic, equipment movement, and exposure to tidal water. The DF-274-5’s steel cover supports loads up to 500 lbs, making it ideal for installation on dock decks, warehouse loading bays, or maintenance tunnels. Its watertight design also protects underground utilities (e.g., electrical cables, water pipes) from flooding during high tides or heavy rain.
Intermodal containers (e.g., shipping containers, rail cargo units) often require hatches for access to internal storage. The DF-274-5’s raised structure prevents water from pooling on the cover, a common issue with flush hatches that leads to leakage. It is used to seal openings on refrigerated containers (reefers) or hazardous material containers, ensuring cargo (e.g., food, chemicals) remains protected from moisture and contamination during transit.
HEE (Changshu HaiChuan Engineering & Equipment Co., Ltd.) provides end-to-end support for the DF-274-5 2 DOG RAISED WATERTIGHT HATCH. Clients benefit from:
· Pre-sales consultation: HEE’s engineers assist with dimension verification and customization recommendations to ensure the hatch fits specific project needs.
· Global delivery: Just-in-time shipping to over 50 countries, with expedited options for urgent projects.
· After-sales service: Replacement parts (e.g., NEOPRENE gaskets, bronze bolts) are available for fast delivery, minimizing downtime.
