Back Pressure Compensated - BPC Flow Meter is calibrated. S.D. Process Equipments manufactures Back Pressure Compensated - BPC Flow Meter. S.D. Process Equipments also manufactures various types of Flow meter and Rota meter. The Back Pressure Compensated - BPC Flow Meter has borosilicate glass tubes which are ground and polished to a high precision internal taper. This Flow Meter has float made using anodized aluminium. This Flow Mete is available in an anodized aluminium/powder-coated frame.