GROCO Bronze Vented Loop - 1" Hose

The GROCO Bronze Vented Loop for 1" hose (model HVL-1000) is an essential component for marine plumbing systems, designed specifically for boats, sailboats, and recreational watercraft. This device serves as a critical safeguard against potential flooding caused by back-siphoning in raw water lines that run below the waterline.

Constructed from durable cast bronze, this vented loop offers superior corrosion resistance in saltwater and brackish environments, significantly outlasting plastic alternatives. It effectively interrupts siphoning by allowing air to enter at the highest point in the line, preventing vacuum formation that could collapse hoses or draw bilge water back into the engine or freshwater systems.

Ideal for any vessel utilizing a raw water cooling system or galley pump, the GROCO Bronze Vented Loop is easy to install. Position it at least 12 inches above the waterline and secure it with appropriate marine-grade hose clamps to ensure reliable operation in various marine conditions.