AIV BFV10 model Butterfly valve incorporates the optimum design features to provide long trouble free service in the field. This general purpose soft seated Butterfly valve has a fully rubber lined single piece body with centric disc construction and is available in wafer type body pattern. The body liner which also functions as the soft seat, comes in either a replaceable version or an integrally molded (bonded) version and offers 100% bi-directional sealing against vacuum to rated pressure of PN 10 or PN