BT200/BT220 Double Offset Butterfly Valves

BT200/BT220 Double-offset Butterfly Valves BT200 double-offset butterfly valves, shaft offsets are created by designing the valve with the shaft located behind the centerline of the sealing surface (offset1) and slightly to one side of the pipe centerline (offset2). These double offets offer unique soft seal construction between disc and seat to get high seal performance and high durability. The seat in the body can be changed easily from the body. BT200 is wafer type, economical and compact.     SG Type Seat FN/FV Type Sea Specifications Body Styles BT200 BT220 Connections Wafer Type Double Flanged Type Body Size 3”~60” Body Rating ANSI 150# Body Material WCB, CF8, CF8M, CF3, CF3M, etc… Disc Material WCB, CF8, CF8M, CF3, CF3M, etc… Disc Treatment Hard Chrome Plated or Buffing Flow Characteristics Approximate EQ% (Inherent Characteristic) Rangeability 70° Opening/50:1, 90° Opening/100:1 Fluid Temperature -45~+250℃ -45~+60℃ -10~+180℃ Seat Type SG FN FV Seal Ring Material Reinforced Teflon Reinforced Teflon Reinforced Teflon Back Ring Material A276-316 NBR VITON Seat Leakage ANSI Class Ⅵ Actuator Combination    D100RA: Multi-spring Pneumatic Diaphragm Actuator    P100RA: Pneumatic Cylinder-Piston Actuator Double-offset Construction BT200 3” ~8” BT200 10” ~16” BT200 18”~60”

下一页：BT300/BT320 Triple Offset Butterfly Valves