55B Adjustable Angle-check Valve Brass 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 Device in according with Direc ve 2014/34/EU and harmonized standard EN ISO 13617-2. UPPER UNIT ANODIZED ALUMINIUM O-RING SEAL STAINLESS STELL PRESSURE RELIEF VALVE Chemical suitability - Standard Model is for tradi onal fuel without addi ves or compa ble chemical prod

INSTALLATION DIAGRAM

REGULATION PARAMETERS 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...

Maintenance - Periodically check the device is necessary to remove possible dirty. - Always replace the product a er fire or deflagra on. - In case of tampering warranty expires and safety protec on is not guaranteed. Product Cer fica on, Declara on of Conformity, User Manual and Tes ng on: www.ridart.it/support The Data and Images are not binding. We reserve the right to make changes without no ce. Pressure & Flow Tolerances ±20%. Rev. 23/09/2024