Forespar Marelon Vented Loops, Anti Siphon Valves

$30.95 to $40.67
$30.95 to $40.67

DESCRIPTION

Forespar Vented Loops are molded from Marelon (a proprietary marine grade plastic). Installing a vented loop 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 is present in fluids.
  • The new MF-846 vent barb assembly option can be used in lieu of the standard MF-841 cap/duckbill. This option allows venting to the outside of the hull via a 1/4" (6.35mm) hose.
  • Available in Barb Sizes: 1/2", 5/8", 3/4", 1"and 1-1/2"(Size = Barb Size)

  • Marelon will not rust or corrode
  • The duckbill one way valve is designed to seal properly if particulate matter is present in fluids
  • The new MF-840B is a 1-1/2" vented loop with a 1/4" hose barb cap instead of a duckbill
  • This option allows venting to the outside of the hull via a 1/4" hose

SPECS

Item #
MPN
Barb Size
Width
Height
Model
Forespar Marelon Vented Loop, MF 843, 5/8"
Item #:531578-5/8"
MPN:903003
Barb Size: 5/8"
Width: 4"
Height: 4-1/2"
Model: MF 843
Forespar Marelon Vented Loop, MF 842, 3/4"
Item #:531578-3/4"
MPN:903001
Barb Size: 3/4"
Width: 3-3/4"
Height: 4-1/2"
Model: MF 842
Forespar Marelon Vented Loop, MF 840, 1-1/2"
Item #:531578-1-1/2"
MPN:903000
Barb Size: 1-1/2"
Width: 7-3/4"
Height: 5-1/4"
Model: MF 840
Forespar Marelon Vented Loop, MF 844, 1"
Item #:531578-1"
MPN:903007
Barb Size: 1"
Width: 9"
Height: 4-1/4"
Model: MF 844
Forespar Marelon Vented Loop, MF 845, 1/2"
Item #:531578-1/2"
MPN:903008
Barb Size: 1/2"
Width: 4-1/4"
Height: 5-1/4"
Model: MF 845

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PRODUCT REVIEWS

Ratings & Reviews

3 reviews

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Gina Lusardi

by

easy to find and order products on webiste.

Barbara Davis

by

Sorry about the wrong size barb but you made it very easy to obtain the correct one I'll ship the other one back as soon as it gets here

Solid Vented Loop

by

This vented loop replaced an old metal loop that was badly corroded. Forespar has built a robust product here that will not corrode, built very robustly and mounts solidly to a bulkhead using 3 mounting brackets. I would recommend this product to a boater friend.

PRODUCT FAQs

SHIPPING & RETURNS

Warranty:

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.

Return:

  • 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.