manual pneumatic shut-off valve

pneumatic shut-off valve mainly install at oil tanker and the place that can easily get strike and fire. they need the device which can automatically cut down the medium.when oil tanker get strike or overturn,emergency valve can cut down the oil pipe to avoid the danger. The casting body is design to decrease the weight and improve the fluidity Material : Body:Stainless steel Seal:FPM Shaft:SS Parameter: Size 4 Inch Max air flow rate 2500L/min Temperature -20 -- +70 Work