Adjustable overpressure valve from Arag Italy. This valve leads the excess amount back into the boiler, so it’s possible to hold a constant pressure and prevents a overpressure if it’s clogged. In the middle of the valve there is a seperating membran montaged which makes the precise adjustment possible. The casing is made of glass-fiber reinforced plastic and the interior is made of liquid fertilizer resistant stainless steel with Viton seals. Running-in, running-out with flanged coupling. The bypass have a G 1" connection with external thread. The valve has a max flow per minute of 200 liters. Please choose the max pressure range.