55B Adjustable Angle-check Valve Stainless Steel The valve is designed to prevent siphoning of liquid from an aboveground tank to the suc on pipe installed at a lower level. The valve is also provided with a pressure relief valve which opens at around 1,5 bar in case of pressure rising in the pipeline. It’s a Safety accessory in according with Direc ve 2014/34/EU and harmonized standard EN ISO 13617-2. STAINLESS STEEL UPPER UNIT STAINLESS STEEL O-RING SEAL STAINLESS STELL PRESSURE RELIEF VALVE Chemical suitability - The Stainless Steel (SS) model is suitable for aggressive solvents, acids or bases - Passiva on treatment on requ

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Installa on and adjustment - The valve is installed at the highest point of the tank, normally on the manhole cover. - The valve is set up in the factory with random parameters: the final adjustment is to be made a er its fixing - The value “D” of the diagram F corresponds to the measure requested to open the valve at certain value of the pressure that, to make it easy, is marked with grooves on the spindle. These grooves are related to the exact height H of the Schema S that shows the tank and the dispenser. - In order to adjust the valve remove the brass cap and screw up (to increase the force)...