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NICKELSHIELD®
Electroless nickel plating
A non-ferrous metallic alloy of 90% nickel and 10% phosphorus deposited on the entire vessel by a chemical plating process after complete vessel fabrication.
NO ANODES.
NICKELSHIELD®
Electroless nickel plating
A non-ferrous metallic alloy of 90% nickel and 10% phosphorus deposited on the entire vessel by a chemical plating process after complete vessel fabrication.
NO ANODES.
Materal exclusive to PVI.
POLYSHIELD®
Thermoplastic polymer
Multiple layers of electrostatically applied, oven-cured polymer. Formulated to resist oxidation.
NO ANODES.
POLYSHIELD®
PVDF polymer
Multiple layers of oven-cured fluoropolymer, among the most stable materials known. NO ANODES.
Materal exclusive to PVI.
TURBOPOWER® exchanger
DURASHIELD® barrier
A 3-step process including a robotically applied arc-sprayed copper layer infused with PTFE polymer.
COPPERSHIELD®
Copper-clad Fire Tubes
Steel tubes are wrapped in pure sheet copper, which is sealed by a TIG weld to form contiguous waterside barrier.
Solid Bronze Fittings,
Solderless - Bolted Design
Tank connections thread into corrosion-proof bronze fittings that can be removed from the vessel.
Solid Bronze Fittings,
Solderless - Bolted Design
Tank connections thread into corrosion-proof bronze fittings that can be removed from the vessel.
Brass tank nipples
Nipples to connect the drain valve and temperature and pressure relief valves are threaded brass; not dielectric.
Brass tank nipples
Nipples to connect the drain valve and temperature and pressure relief valves are threaded brass; not dielectric.
SPECIALTY MATERIALS:
PVI also manufactures pressure vessels from 439 series stainless steel, a material that is inherently corrosion resistant and requires no lining. Ability to use this material is limited to narrow diameter pressure vessels, such as in the PLATINUM® condensing water heaters. It is approved for use by ASME code in the rules pertaining to potable water heaters.
For indirect steam-fired,section VIII heat exchangers, we use 316L stainless steel in our CSX/ISX product lines, but limit their use to installations where dissolved chloride levels in the water supply are very low; less than 70 ppm. Click to learn why PVI does not use any 300 series stainless steel (i.e. 304, 304L, 316, 316L) in direct-fired heat exchangers, unless the product is heating de-ionized water.