GI Series High-Vacuum Butterfly Valve
	GI high- vacuum butterfly valve is used toconnect or cut off the airflow in the vacuum pipeline. The applicable media include clean air or non-corrosive gases.
Main Technical Performance
Vacuum Range：  105~6.7x10-5Pa Valve Leak Rate：  ≤1.3x10-5 Pa.L/S Applicable  Temperature：  -25~+80℃(NBR)  -30~+150℃（fluorine rubber) Mounting state：  Any Angle Opening ：  0-90°（DN32-DN200每15°一档共6档，DN250-DN500无级调节）
Materials of Main Parts
Valve Body , disc and stem: carbon steel or stainless steel Sealing element: NBR or fluorine rubber
Outling and Connection Dimensions (mm)(JB919)
Model 型号 DN D D0 D1 B H B1 L n-øc Gl-32 32 78 64 36 22 102 45 115 4-ø7 Gl-40 40 85 70 44 22 106 45 115 4-ø7 Gl-50 50 110 90 55 22 118 45 115 4-ø9 Gl-65 65 125 105 70 26 126 45 135 4-ø9 Gl-80 80 145 125 85 30 135 45 135 4-ø9 Gl-100 100 170 145 105 30 150 45 135 4-ø12 Gl-150 150 220 195 156 35 178 45 165 8-ø12 Gl-200 200 175 250 208 40 208 45 185 8-ø12 Gl-250 250 330 300 258 45 262 127 ø160 8-ø14 Gl-300 300 380 350 308 55 287 127 ø160 8-ø14 Gl-400 400 500 465 408 60 361 175 ø200 8-ø18 Gl-500 500 600 565 510 80 447 175 ø200 12-ø18