8" Ullage Hatch with 7/8" Coaming Height (Model #SS144-08A) - Stainless Steel

The Model SS144-08A is engineered to serve as a high-integrity, secondary inspection and access port on tank tops or primary hatch covers. With a 7/8" coaming height, it sits nearly flush with the surrounding surface to keep active work decks clear and safe for foot traffic or cargo handling. The premium stainless steel construction completely prevents rust-binding or frozen fasteners, ensuring smooth operation even after years of relentless saltwater exposure.

Intended Use Cases:

• Corrosive Fluid Sounding: Ideal for quick-access monitoring of liquid chemical cargo, wastewater holdings, or fuel tanks using standard sounding tapes.
• Tank Sampling & Drop-Light Inspection: Allows swift personnel entry for fluid sampling or drop-light inspections of inner tank conditions without removing primary, heavy-duty manhole covers.
• Severe Salt-Spray Atmospheric Exposure: Built for open weather decks, swim platforms, and work zones constantly hammered by high-salinity marine elements.

Primary Industries & Vessel Types:

• Chemical & Liquid Product Barges: Heavily utilized on specialized transport vessels requiring strict cargo purity, zero fluid contamination, and high chemical resistance during sampling.
• Commercial Fishing & Processing Ships: Built to withstand aggressive organic compounds, saltwater scale, and daily high-pressure sanitation cleanings on active processing flats.
• Workboats & Fleet Transport: Provides an excellent zero-maintenance upgrade for fuel tank monitoring on harbor tugs, push boats, and high-speed crew transport vessels.
• Offshore Energy Platforms & OSVs: Ideal for extreme ocean states where regular steel hardware suffers rapid atmospheric pitting, rust, and mechanical seizing.
• Marine Infrastructure & Processing Plants: Suitable for auxiliary non-vessel installations including floating fuel docks, transfer terminals, and shore-side marine facilities.

• Premium Stainless Steel Construction: Cover plate, coaming frame, and latching hardware are crafted entirely from high-grade stainless steel to deliver extreme structural strength and superior resistance to chemical pitting.
• 8" Clear Opening Layout: Sized at a precise 8" diameter to comfortably accommodate standard inspection tools, sounding lines, and sampling canisters.
• Buna-N Chemical-Resistant Gasket: Features a premium Buna-N (Nitrile) rubber gasket track providing excellent sealing performance and broad resistance to fuels, oils, and marine chemicals.
• Industrial Clean Finish: Delivered fully finished and polished, offering a professional appearance that completely eliminates the need for painting, priming, or coating maintenance.

• Qualified Personnel Requirement: Installation must be performed by qualified marine welders or fitters in accordance with applicable classification society standards.
• Stainless Steel Welding Notice: Appropriate stainless steel welding procedures, including correct filler rods and shielding gases, must be utilized when integrating this frame into the deck structure to preserve its corrosion-resistant properties.
• Surface Preparation & Alignment: The coaming frame must be aligned true over a clean deck cutout and securely welded to prevent thermal warping or twisting of the perimeter sealing seat during fabrication.
• Debris Inspection: Prior to closing, ensure that the gasket track, coaming rim, and latch catches are completely free of weld spatter, slag, rust, or debris.