Fasten the extended flange to tank walls. These sights have a shatter-resistant plastic domed window so you can view tank contents from multiple angles.

Also known as sacrificial anodes, these rods and pads protect tanks, water heaters, and heat exchangers from rusting by attracting corrosion that would otherwise damage equipment.

Rods have a steel core covered with zinc or magnesium. They have a threaded pipe connection.

Zinc rods protect against corrosion and scaling in salt water and fresh water.

Zinc and zinc-plated steel fittings have mild corrosion resistance. Fittings with a self-closing hinged cover block contaminants from entering equipment.

UNF and UNEF threads are similar to threads on a machine screw or bolt. They require a sealant, such as an O-ring, to minimize leakage.

Note: Fittings do not hold oil; any oil dispensed into the fittings passes into the part to be lubricated.