Wafer Type Butterfly Valve, One-piece Shaft with Pin stem Design to comply with MSS SP-67, BS5155 and API 609 Compatible with ANSI, DIN, JIS flanges Size range: Handles (1 1/2 to 12 inches), manual gear operators (1 1/2 to 48 inches) Pressure: From PN0.6MPa to PN1.6MPa Medium: Acids, alkalis and salts Materials list: Body materials: Cast iron, ductile iron and stainless steel Disc: Ductile iron (with nickel-plated or nylon-coated), SS 304, 304L, 316, 316L Seat: PTFE Shaft: SS410, SS416 Pin: SS316 O ring: NBR, EPDM, neoprene and viton Bushing: PTFE, nylon and lubricated bronze