Author Topic: diesel tank venting  (Read 1359 times)

Poovo

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  • Posts: 1
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  • Boat Model: Bavaria 40
  • Boat Year: 2002
diesel tank venting
« on: September 16 2022, 03:52 »
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sy_Anniina

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  • Boat Model: Bavaria 40
  • Boat Year: 2001
Re: diesel tank venting
« Reply #1 on: September 16 2022, 06:13 »
Our boat (same model, vintage 2001) has a separate breather "through-hull" right next to the fill cap. See attached photo - the small thing circled in red.

BTW on the opposite side, the arrangement is identical for the stern water tank - same breather hose + "through-hull" there.

While filling up, this breather annoyingly bursts easily a  spoonful or two of diesel out when the tank becomes full - have developed quite good a t listening when the tank is approaching full :)

BR,

Tommi
s/y Anniina

Yngmar

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  • Boat Model: 40 Ocean
  • Boat Year: 2001
Re: diesel tank venting
« Reply #2 on: September 16 2022, 09:00 »
Sounds like someone fitted a vented filler cap, like Perko makes. They do supposedly vent while the cap is on, there is some path for air exchange.

I don't think it's standard, I've never seen it on a Bavaria, the ones from that era all have the Roca filler caps and separate tank vents Tommi describes.

Found a drawing of the Attwood one:

(formerly) Sailing Songbird  ⛵️ Bavaria 40 Ocean (2001)

Moodymike

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Re: diesel tank venting
« Reply #3 on: September 16 2022, 13:27 »
My B32 2003 has the one piece filler cap. Vents through cap.

Fenders

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  • Boat Model: Bavaria 32
  • Boat Year: 2004
Re: diesel tank venting
« Reply #4 on: September 16 2022, 22:39 »
Same as Moodymike. B32, 2004.