PVI Industries PV 6619 02 manual Specification For Domestic Water Heaters, Tank Lining, ________

SPECIFICATION FOR DOMESTIC WATER HEATERS

Semi-instantaneous, U-tube, Hot Water Generators with Nickel-Plated Shell

And Steam as the Energy Source

Furnish and install the following QuickDraw® water heater(s) as manufactured by PVI Industries, L.L.C. of Fort Worth, Texas.

	Model	GPM Recovery	Inlet Steam
Qty	Number	40° to _____°F	Pressure (psi)
___	____________	________	_______
___	____________	________	_______
___	____________	________	_______

Pressure Vessel and Heating Surfaces

The water heater will be constructed and stamped in accordance with Section IV, Part HLW of the ASME code. The water heater will be National Board Registered for a working pressure of 150 psi and will be pressure tested at 1-1/2 times working pressure. All tank connections will be nonferrous.

The heat exchanger will be a _____ single-wall or ____ double-wall (atmospherically vented), copper u-tube bundle

with nonferrous waterside tube sheet, baffles, and tie rods. Heat exchanger will be constructed to ASME code and rated for 150 psi and 300°F service.

Tank Lining

The tank will be a plated with electroless nickel (EN). Plating will occur after the pressure vessel is completely fabricated and all welding is completed. The EN plating will be a high-phosphorus (10%) and nonporous composition suitable for submersion service (ASTM B733 standard may be used as a guideline). The finished lining will not require sacrificial anode rods. For additional protection against galvanic corrosion, which may occur within the potable water system, the electroless nickel plating may have a high-dielectric-strength polymer overcoat.

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PV 6619 9/02 1