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Always Free Shipping—No Minimum Order Contiguous U.S. orders only. Alaska and Hawaii excluded.
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Eligible items may be returned within 30 days of delivery. Items must be new, unused, uninstalled, and in original packaging. An RMA is required.
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MF 839 Vented Loop - 1-1/4"
Installing one of our vented loops will ensure that fluids will not siphon from tank to tank. Vented loops are commonly used in the marine toilet system and engine cooling system. The simple valve system incorporated in the top of the loop allows air to enter the line when not in use, yet effectively seals as water or other fluid passes through. Molded in Marelon, neither vent nor loop will corrode. The duckbill one way valve is designed to seal properly if particulate matter is present in fluids.
Specifications:
Barb Size: 1-1/4" (28.57mm)
Height: 7" (177.8mm)
Width: 9" (228.6mm)
Ensure reliable fluid management with the Forespar Performance Products MF 839 Vented Loop, designed for use in marine toilet systems and engine cooling applications. This 1-1/4-inch vented loop prevents siphoning by allowing air entry when not in use, effectively sealing off the flow during operation. Its molded Marelon construction guarantees resistance to corrosion, making it an ideal choice for harsh marine environments. The integrated duckbill one-way valve ensures proper sealing even when particulate matter is present in fluids, maintaining system integrity and performance. Easy to install, this vented loop offers a durable and maintenance-free solution to prevent fluid siphoning in your vessel’s plumbing system. Whether managing sensitive marine toilet lines or cooling systems, this vented loop delivers dependable operation and peace of mind. Crafted to meet the demands of marine applications, it combines innovative design with durable materials for long-lasting performance. Prop 65 compliant, ensuring safety and environmental standards are met for marine use.
Features:
Vented design: prevents siphoning by allowing air to enter the line when not in use
Corrosion-resistant Marelon construction: ensures durability in harsh marine environments
Duckbill one-way valve: provides a proper seal even with particulate matter present
Easy installation: designed for straightforward setup in marine plumbing systems
Reliable sealing: maintains system integrity during operation and prevents fluid siphoning
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