MF 841 Vent/Duck Bill

  • Vent Cap assembly

SKU: FS903002G

In Stock


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.  Moulded in Marelon®, neither vent or loop will corrode.  The duckbill one way valve is designed to seal properly if particulate matter is present in fluids. The new MF-846 vent barb assembly option can be used in lieu of the standard MF-841 cap/duckbills.  This option allows venting to the outside of the hull via ¼” (6.35mm) hose.


Forespar® accepts no responsibility for valve or thru-hull components which are improperly installed, tampered with or have inadequate access for service and maintenance.
  • Vent Cap assembly
SKU FS903002
Brand Forespar

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