Fuel tank vent caps in marine fuel systems allow air to enter and exit the tank, preventing vacuum or pressure buildup. They are designed to resist corrosion from saltwater and harsh marine environments. Proper venting ensures safe and efficient fuel flow to the engine.

Size: Typically ranges from 1.5" to 4" in diameter, depending on the application.

Grade: Compliant with ASTM, ISO, or MIL-SPEC standards for marine fuel systems.

Viscosity: N/A (not applicable to vent caps).

Buoyancy: Designed to prevent fuel spillage and water ingress, often with float mechanisms.

Material: Constructed from corrosion-resistant materials such as stainless steel, aluminum, or high-grade plastics like HDPE or Nylon.

Pressure Rating: Typically rated for 3-15 psi, depending on design and application.

Temperature Range: -40°F to +250°F (-40°C to +121°C) for most marine-grade vent caps.

Seal Type: Often includes gaskets or O-rings made from nitrile, Viton, or EPDM for fuel resistance.

Thread Type: Standard NPT, BSP, or metric threads for secure fitting.

Certifications: May include USCG, ABYC, or CE compliance for marine safety.

Fuel Tank Vent Caps for Marine Fuel Systems may comply with maritime standards such as USCG, ABYC, ISO, or IMO regulations, depending on the specific product and manufacturer. Always verify compliance with the relevant standards for your application.