Sacrificial Zinc Hull Anodes - Block with Galv Strap

Sacrificial Zinc Hull Anodes - Block with Galv Strap

Description

Whenever you have two or more dissimilar metals in contact, or in close proximity to each other, in combination of an electrolyte i.e. salt water, a small electric current will flow from the most noble metal(cathodic) to the least noble metal(anodic). When this occurs, the least noble metal will be attacked and gradually destroyed in what is commonly called "galvanic corrosion". The intensity of this attack will vary according to the relative position of metals on the Galvanic Series List. The further apart the metals are, the faster it occurs and the worst the effects are. The relative areas or the mass of the metals also has a bearing. To overcome this it is common practise (and prudent!) to electrically connect all underwater metals components that are in contact or close proximity to each other to a zinc alloy block. Because zinc is one of the least noble or anodic metals, it will be eaten away first, rather than those other inexpensive and unneccessary metal objects under the water, such as your propellor, rudder, shaft etc !! Hence the term "Sacrificial anode. All our zinc anodes conform to the zinc alloy composition designated in Australian Standard 2239-Z1, as well as U.S. Naval Mil.Spec. MIL-A-18001, recognised as the world standard for anode quality.
These block anodes have a galvanised strap inserted during casting which can be drilled to suit your bolt size and centres.

Code Product Name Price Quantity
12450016
ANODE BLOCK WITH STRAP 100X38X25MM 0.7KG
$24.65
12450015
ANODE BLOCK WITH STRAP 100X75X25MM 1.4KG
$29.15
12450012
ANODE BLOCK WITH STRAP 155X80X25MM 2.0KG
$38.35
12450014
ANODE BLOCK WITH STRAP 155X155X25MM 4.2K
$76.35
12450011
ANODE BLOCK WITH STRAP 250X75X32MM 3.6KG
$71.65