These are an expensive item and no reason to have to replace them sooner than needed. Not to be used for transferring steam! Plate material: stainless steel AISI 304L. These are used for transferring heat from one hot water source to another without mixing the two different water sources.For example when hooking up a non pressurized furnace to an indoor boiler or for heating cold water before it goes into the hot water heater to eliminate the need for fuel to power your water heater. They are good for preheating water to water heaters and for transferring heat from an outdoor furnace or solar system to an indoor boiler. Other uses for them include transferring heat from hot oil or cooling milk off a milk pipeline. Sizing your plate depends on several factors. Plates have BTU ratings of approximately 4,000 BTU per plate, ie a 10 plate is 40,000 BTU and a 40 plate is 160,000 BTU. These ratings work very well for infloor heating, but if you are hooking to an indoor boiler you will want to use a larger plate to do the same thing. Another way to figure plate size is 10 plates for every 500 square feet. Plates should be mounted vertically but can be placed horizontally if space does not allow. This plate was designed here in the United States. It is being built under our contract, overseas to our strict standards.
You can almost guarantee if you are paying less than double our price it was not manufactured in the US with US workers. The item "80 Plate Water to Water Brazed Plate Heat Exchanger 1 1/4 FPT Ports with Brackets" is in sale since Thursday, June 20, 2019. This item is in the category "Home & Garden\Home Improvement\Heating, Cooling & Air\Water Heaters\Water Heater Parts". The seller is "badger-pipe" and is located in Mauston, Wisconsin. This item can be shipped worldwide.