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Olive Vent Cow
The Olive Vent Cowl for LNG Vessels is a critical ventilation and protection device installed on exposed decks, cargo tanks and vent systems of ships. It is mainly used together with vent silencers, relief lines and pressure-vacuum valves. While ensuring normal ventilation and air exchange for compartments and pipelines, it effectively prevents intrusion of rain, wind, seawater, insects and foreign matters. With excellent salt-spray resistance, low-temperature toughness and robust structure, it fully meets marine standards and the strict requirements of LNG carriers for cryogenic, explosion-proof and high-corrosion protection service.
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Product Description
· Standard: Designed, manufactured and inspected in accordance with CB/T 4444-2017 Marine Mushroom Ventilators
· Main Material: Shell, flange and drain structure in SS304L/SS316L stainless steel
· Insect Screen: High-corrosion-resistant SS316L stainless steel wire mesh for smooth ventilation
· Structure: Fixed olive-type design with integrated drain holes and standard lifting lugs
· Connection: Standard stainless steel flange, directly connectable to silencer outlets and ventilation ducts
· Surface Treatment: Surface prepared to Sa2.5 or St3, with two-layer anti-corrosive primer (dry film thickness ≥50μm)
Technical Parameters
· Applicable Media: Air, BOG, inert gas venting
· Working Temperature: -196℃ ~ +120℃
· Corrosion Protection: Suitable for harsh marine high-salt and high-humidity environments
· Connection: Marine standard stainless steel flange
· Standard Accessories: Integrated drain holes, stainless steel insect screen, lifting lugs
product feature
· All-stainless steel corrosion-resistant construction: Made of SS304L/316L stainless steel, resistant to seawater, salt spray and marine atmosphere, with long service life for LNG vessel operation.
· Integrated drainage and wave prevention: Built-in drain holes quickly discharge intruded rainwater and seawater, avoiding water accumulation, icing and internal corrosion to ensure cryogenic system safety.
· Balanced ventilation and protection: Provides sufficient airflow while blocking rain, seawater, insects and debris to keep pipelines and compartments clean.
· Marine standard compliant manufacturing: Produced under CB/T 4444-2017, with dimensions, strength and welding quality meeting classification society requirements.
· Low-temperature toughness: Cryogenic-resistant stainless steel remains crack-free and stable at -196℃ for LNG relief service.
· Easy installation & high compatibility: Standard flange with lifting lugs enables direct mounting on silencer outlets, deck vents and tank vent lines.
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