The non replaceable rubber liner extends along the valve faces, eliminating the use of gaskets. The body with bolt holes for easy pipe alignment is suitable for mounting between flanges according to DIN PN6/10/16. Due to the semi-monoflange design this valve can be used as end of line valve. Face to face dimensions are according to ISO5752/EN558 basic series 20, API 609, DIN 3202 K1 and BS 5155. The butterfly valve is provided with a handlever for manual operation. For easy mounting of both manual and automatic actuators the valve is executed with a topflange according the ISO 5211 standard. Furthermore, as a standard, this valve has a long neck and a plastic cap for insulation. Applications of series 63 butterfly valves can be found amongst others in HVAC, swimming pools, cooling water and non-corrosive gasses, up to a maximum of 16 bar (PN16 version).