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Vetus Anti-Siphon Air Vent, Vetus ASDH
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Vetus ASDH Anti-Siphon Air Vent With Hose and Fittings (13mm - 32mm)

Part No. V-ASDH

£86.09 You pay £86.09 Incl VAT You pay £71.74 Excl VAT

RRP £95.65 £79.71

Save £9.56 (10.0%) Save £7.97 (10.0%)


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Brand Vetus
Model ASDH
Hose Size Suits ID: 13mm (1/2"), 19mm (3/4"), 25mm (1") and 32mm (1-1/4")
Hose Tail Size 13mm / 1/2", 19mm / 3/4", 25mm / 1", 32mm / 1-1/4"
Construction Polypropylene Plastic bend and plastic hull outlet material
Length Hose: 4 Meters x 8mm ID hose
Width 96mm
Height 133mm
Depth 68mm

If the point where the cooling water is injected into the exhaust is less than 15cm above the waterline, then when the engine is stopped, there is a risk that cooling water will siphon into the exhaust system, and subsequently into the engine itself. Such siphoning may be prevented by fitting the V-ASDH at least 40cm above the waterline.

The Vetus ASDH air vent is ideal for toilets or holding tanks which are installed below the waterline. The anti-siphon vent comes complete with a skin fitting, hose clamps, and 4m of breather hose. Features a hose connection to the outside of the hull. There is a constant bleed off of cooling water through this hose, whilst the engine is running. Can be easily dismantled by hand for cleaning.

For hose ID sizes: 1/2" (13mm), 3/4" (19mm), 1" (25mm), 1-1/4" (32mm).

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