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DF-154-14
HEE
Product Overview:
This product is a rotary clamping quick-opening hatch specifically designed for industrial storage and transportation, marine vessels, and chemical equipment. Featuring an integrated circular structure, it relies on the interlocking design of the central screw and rotating clamp rod, eliminating the cumbersome operation of traditional bolt fastening. With no need for auxiliary tools, a single operator can swiftly open and close it, ensuring convenient and efficient operation. Additionally, it balances sealing reliability with structural durability, making it an ideal maintenance and observation component for various atmospheric, medium, and low-pressure equipment.
Core Structure and Material:
1. Main Structure: Features a circular cover plate design for even stress distribution, paired with a rotating press rod and a central locking screw. Rotating 90° achieves secure locking or quick unlocking, offering a compact structure with minimal space occupation. It adapts to tight installation spaces of various equipment without affecting overall operation post-installation.
2. Core Material: The main body is crafted from high-strength carbon steel, with a professionally treated anti-corrosion coating on the surface, offering excellent impact resistance, aging resistance, and corrosion resistance, making it suitable for long-term outdoor, humid, and harsh industrial environments. The sealing components utilize nitrile rubber (NBR) for oil, temperature, and corrosion resistance, which can be replaced with fluorocarbon rubber (FKM, suitable for strongly corrosive media) or chloroprene rubber (CR, suitable for seawater environments) based on operational requirements. The sealing performance remains stable, effectively preventing medium leakage and oil vaporization. Key components such as the pressure rod and screw are made of galvanized carbon steel, providing rust resistance and wear resistance to extend the overall product lifespan.
RAISED MULTI-BOLT CLEAN OUT HATCH
MODEL NO. | ΦA | B | WT.(lbs) |
| DF-154-14 | 14" | 2 1/2" | 60 |
| DF-154-18 | 18" | 2 1/2" | 78 |
| NO. | Name & Specifications | Qty | Material |
| 1 | COVER | 1 | STEEL |
| 2 | GASKET | 1 | NEOPRENE |
| 3 | COAMING | 1 | STEEL |
DF-154-14 raised multi-bolt clean out hatches are made of carbon steel，and they can also be made of stainless steel.
All the DF-154-14 raised multi-bolt clean out hatch will pass the leakage test before they leave the factory, and the pressure is 0.04MPa.
Other optional extras include: hot dipped galvanized, stainless steel construction, and customized heights.
Product Usage:
This product is primarily used for the inspection, observation, oil measurement, and ventilation of various equipment. As a core accessory for equipment, its main function is to provide operators with a convenient internal access channel while ensuring the sealing performance of the equipment, preventing medium leakage, and safeguarding production and transportation safety. Specific applications include: internal inspection and maintenance of equipment, liquid level measurement and sampling inside tanks, tank gas ventilation, internal observation and fault diagnosis of equipment, etc.
Detailed application scenarios:
1. Tanker Transportation Field: Suitable for various liquid tankers (gasoline tankers, diesel tankers, chemical liquid tankers, etc.), installed on the top of the tanker as a maintenance access and oil measurement port. It facilitates operators in measuring liquid levels and sampling before and after loading/unloading, while ensuring oil-tight sealing to prevent leakage during transportation. Compatible with long-term jolting conditions of road and rail tankers.
2. Industrial Tank Sector: Widely used in various types of industrial tanks such as oil storage tanks, chemical storage tanks, food storage tanks, and drinking water storage tanks. As a manhole for tank maintenance, it facilitates access for workers to perform cleaning, maintenance, and repair tasks inside the tank. It also features excellent watertight and airtight performance to prevent the volatilization and leakage of stored media, meeting the requirements for atmospheric pressure and medium to low-pressure storage tanks.
3. Shipbuilding Industry: Suitable for various ship compartments (cargo ships, oil tankers, fishing vessels, etc.) such as cargo oil tanks, fresh water tanks, and ballast tanks. Serves as deck access hatches and observation ports with excellent watertight performance, capable of withstanding wave impacts and seawater erosion. Ensures compartment sealing during navigation while facilitating routine inspection and maintenance by crew members.
4. Chemical Industry and Pressure Vessel Sector: Suitable for medium and low-pressure pressure vessels such as chemical reactors, filters, and metering tanks, serving as access and observation ports. Compatible with various chemical media including acids, alkalis, and oils, ensuring reliable sealing to prevent leakage hazards. It also facilitates maintenance personnel in inspecting internal equipment faults and performing routine maintenance.
5. Other Industrial Applications: Suitable for inspection ports in environmental protection equipment, power generation equipment, mining equipment, and other industrial applications. It adapts to various outdoor and harsh industrial environments, meeting the inspection and sealing requirements of different equipment with its compact structure and reliable performance.
Product advantages:
1. Efficient opening and closing: No tools required, single person rotation of the pressure rod can complete locking and unlocking, easy to operate, greatly saving maintenance and loading/unloading time, and improving work efficiency;
2. Reliable sealing: The annular rubber sealing ring is matched with uniform clamping force, which can achieve water tightness, oil tightness, and air tightness, effectively preventing medium leakage and oil and gas evaporation, and complying with industrial safety and environmental protection standards;
3. Durable and anti manufacturing: high-strength carbon steel body+anti-corrosion coating, impact resistance, aging resistance, anti-corrosion, anti rust treatment of key components, suitable for long-term outdoor and harsh industrial environment, long service life;
4. Universal adaptation: Available in dual models (154-14/154-18), suitable for different size requirements, standardized flange interface, can directly replace various old hatch covers/manholes, with strong interchangeability and easy installation;
5. Easy maintenance: The structure is simple, the seals are easy to disassemble and replace, no professional skills are required, the long-term use cost is low, and it is suitable for the daily maintenance needs of industrial equipment.
Applicable working conditions: normal pressure and medium low pressure (0.25-0.6MPa) working conditions, suitable for temperatures ranging from -20 ℃ to 180 ℃ (depending on the sealing material), suitable for various media such as oil products, chemical media, seawater, fresh water, etc.
