Forespar Marelon Vented Loop 1½”

The Forespar Marelon® Vented Loop is designed to prevent siphoning, ensuring that water or other fluids cannot flow back uncontrollably from the sea or a holding tank into the system. It is an essential safety component commonly used in marine toilet systems and engine cooling systems.

The integrated air valve located at the top of the loop allows air to enter the system when it is not in use, effectively breaking the siphon. As water or other fluids pass through the loop, the valve automatically seals, ensuring reliable and efficient operation.

Manufactured from Marelon®, both the loop and the vent are completely resistant to corrosion, making them ideal for long-term use in harsh marine environments. The duckbill one-way valve is specifically designed to maintain a reliable seal even when fluids contain particulate matter or debris.