- design for circular pipe - MSKT, MSKTG - the flapper blade is sealed around the perimeter, the butterfly valve is suitable as part of frost protection - version G is supplied with rubber seal - the butterfly valve lever and can be locked in any position by means of a set screw - 0-100% control at 0-90° rotation angle - from size 560 inclusive only with flanges - the MSKT is ready for mounting the actuator after removing the lever