Tru-Design Vented Loops are the superior composite siphon break solutions for marine applications. Vented Loops prevent water siphoning from underwater hull fittings back into a vessel and thereby guard against accidental flooding and sinking.
Vented loops are used predominantly in toilet-to-overboard applications, toilet inlet applications, holding tank-to-overboard applications. They can also be used in some genset and engine cooling water applications - especially where the engine is mounted below the waterline.
The simple one-way duckbill breather valve at the top of the vented loop allows air to enter the line when not in use, thereby preventing siphoning – and yet seals when water or waste passes through the loop. The duckbill valve is designed to seal even when particles are present in the fluid.
Tru-Design Vented Loops are molded from a glass reinforced nylon composite. High strength, high-modulus glass fibers impregnated into the nylon provides dramatic strength, stiffness, toughness, and dimensional stability.