... or lug butterfly valve, with various rubber seats, EPDM,NBR,VITON,PTFE,etc. very convenient Butterfly Val Rubber Butterfly ValveA/LT type, with pin ... , Oils, Acids, Alkalis, Salts, etc. Design & Manufacture acc. to : API 609,MSS SP-67,BS5155,BS EN593. Face to Face ... of flange end standards, such as DIN2501, ANSI125/150, AS2129 Table D & E, BS4504,BS10D&E,JIS10K. Lug Type Rubber Lined Butterfly Valve