Forespar Vented Loop

$34.13 to $46.66
$34.13 to $46.66
These vented loops have hose barbs threaded onto them, sealed with TeflonĀ® tape.
Vented Loops are commonly used in the marine toilet system and engine cooling system. The simple inverted duckbill valve system incorporated in the top of the loop allows air to enter the line when not in use, yet effectively seals the vent as water or other fluid passes through.
Molded in glass-reinforced Marelon, neither vent nor loop will corrode. The duckbill one-way valve is designed to seal properly, even if particulate matter is present in fluids.
Item #
Barb Size
Model #
Forespar Vented Loop
Item #:549432-MF 847
Height: 7"
Width: 9"
Barb Size: 1-1/8"
Model #: MF 847
Forespar Vented Loop
Item #:549432-MF 845
Height: 5-1/4"
Width: 4-1/4"
Barb Size: 1/2"
Model #: MF 845

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Forespar Products Corp. warrants all products manufactured by it to be free from factory defects in material and workmanship under normal use and with normal maintenance for a period of thirty six 36 months from the date of initial retail sale. The Limited Warranty is extended only to the original retail purchaser and does not run to any subsequent purchaser. Proof of purchase is required.


  • All returns must be recevied within 30 days of receipt of the order.
  • Manufacturer defects reported within 30 days of receipt will be supplied a pre-paid label for return shipping upon approval.
  • Please contact Go2marine LFS Marine and Outdoor for Manufacture Defects, Returns and help with Warranties.