The BV-valve operates in the same way as a pressure relief valve. Oil is led to the supply side P and the spring/piston V ensures constant pressure by leading the oil through the hole in piston to return side R. The system pressure can be adjusted on the setting screw P1 (under plug).
Application and features:Design in GGG 40 cast iron in accordance with the certification authoritiesLight and heavy oil Hydraulic and lubricating oil