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Common questions about Signal Horn Gas Canister Refill 380ml
Will it fit my horn?
It fits the Oceansouth MG-36912 horn body and nothing else is guaranteed. Gas horn fittings look similar across brands but the thread and valve differ, so check the model stamped on your horn before you match a canister to it. A mismatch vents gas and holds nothing.
How do I know when the canister needs replacing?
Weight and sound. A canister that feels light in the hand or gives a weak, breathy note instead of a hard blast is on its way out. Test it at the start of the season, not the moment you need to signal another vessel.
How should I store a spare on board?
Somewhere dry, cool and out of the sun. A pressurised canister rolling loose in a hot locker under a black deck is not what you want. Stow it upright with the safety gear, where you can find it in the dark without unpacking the boat.
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