It is a dosing device for protecting from the limestone and from the corrosion. They can protect the boiler from hard water

Polyphosphate feeder can be used for boiler,water heater,washing machin,diswasher and so on.It is a dosing device for protecting from the limestone and from the corrosion. They can protect the boiler from hard water.It proportional dosers release polyphosphate refill which prevent the deposit of calcium carbonate and magnesium, forming a protective antiscalant film around them.