Jabsco 3/4" Vented Loop

The Jabsco 3/4" Vented Loop is an essential safety device for any marine engine cooling system, designed to prevent siphoning of raw water back into your engine when the pump shuts down. This product is particularly useful for boaters who want to protect their engines from potential damage caused by uncontrolled backflow.

The vented loop is engineered to sit in the discharge line between your seacock and heat exchanger, featuring a 3/4" bore that accommodates standard marine hose connections. Its vented design includes an air vent that allows atmospheric pressure to break the siphon whenever engine pressure drops, ensuring reliable operation. Constructed with marine-grade materials, it minimizes flow restriction while maximizing vent efficiency.

Ideal for inboard and I/O cooling systems, this Jabsco vented loop is perfect for various types of boats, including center console fishing boats and cruising sailboats. Installation is straightforward, requiring placement in the discharge line after the seacock valve and before any heat exchanger, allowing boaters to focus on enjoying their time on the water.